diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index be2c3854..e85c1c09 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,25 +21,6 @@ jobs:
         # syntax explanation:
         # https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#example-including-additional-values-into-combinations
         include:
-          - os: macos-13
-            ocaml-compiler: 4.14.x
-            build: opam exec -- npm run build406
-            test: npm test
-            artifact-folder: darwin
-          - os: macos-14
-            ocaml-compiler: 4.14.x
-            build: opam exec -- npm run build406
-            test: npm test
-            artifact-folder: darwinarm64
-          - os: ubuntu-latest
-            ocaml-compiler: 4.14.x
-            build: opam exec -- npm run build406
-            test: npm test
-            artifact-folder: linux
-          - os: windows-latest
-            ocaml-compiler: 4.14.x
-            build: opam exec -- npm run build406
-            artifact-folder: win32
           - os: ubuntu-latest
             target: ocaml.4.08
             ocaml-compiler: 4.08.x
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 00166edd..0a931341 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -10,23 +10,6 @@ npm install
 npm run build
 ```
 
-To build targeting 4.06 compiler libs (needed for ReScript projects) whatever the compiler version used:
-
-```
-npm run build406
-```
-
-
-## Test reanalyze
-
-Make sure to always run the tests before submitting any changes (CI usually takes
-longer to give you feedback).
-
-```
-npm run build406
-npm test
-```
-
 ## Releases (for Maintainers)
 
 The project is compatible with the [`npm
diff --git a/README.md b/README.md
index 1e40098e..e57a74d5 100644
--- a/README.md
+++ b/README.md
@@ -176,15 +176,6 @@ npm add --save-dev reanalyze
 
 ## Build From Sources
 
-
-### Build for ReScript
-
-```sh
-opam install dune
-npm run build406
-# _build/default/src/Reanalyze.exe
-```
-
 ### Build for OCaml native projects using dune
 
 ```sh
@@ -210,5 +201,5 @@ Make sure that `dune` builds both `.cmt` and `.cmti` files by enabling bytecode
 This project is itself written in OCaml and can be analyzed as follows.
 ```sh
 dune build
-./_build/default/src/Reanalyze.exe -suppress src/compiler-libs-406 -dce-cmt _build
+./_build/default/src/Reanalyze.exe -dce-cmt _build
 ```
diff --git a/dead-code-ppx/DeadCodePPX.ml b/dead-code-ppx/DeadCodePPX.ml
deleted file mode 100644
index 0f70e280..00000000
--- a/dead-code-ppx/DeadCodePPX.ml
+++ /dev/null
@@ -1,65 +0,0 @@
-open Compilerlibs406
-
-(* Remove code annotated with @dead *)
-
-let hasDeadAnnotation attributes =
-  attributes
-  |> List.exists (fun (({txt}, _) : Parsetree.attribute) -> txt = "dead")
-
-let rec filter_map l ~f =
-  match l with
-  | [] -> []
-  | x :: rest -> (
-    match f x with
-    | None -> filter_map rest ~f
-    | Some y -> y :: filter_map rest ~f)
-
-let value_binding_list mapper value_bindings =
-  value_bindings
-  |> filter_map ~f:(fun (value_binding : Parsetree.value_binding) ->
-         if value_binding.pvb_attributes |> hasDeadAnnotation then None
-         else
-           Some (Ast_mapper.default_mapper.value_binding mapper value_binding))
-
-let structure mapper structure =
-  structure
-  |> filter_map ~f:(fun (structure_item : Parsetree.structure_item) ->
-         match structure_item.pstr_desc with
-         | Pstr_value (rec_value, value_bindings) ->
-           let value_bindings = value_binding_list mapper value_bindings in
-           if value_bindings = [] then None
-           else
-             Some
-               {
-                 structure_item with
-                 pstr_desc = Pstr_value (rec_value, value_bindings);
-               }
-         | Pstr_primitive {pval_attributes} ->
-           if pval_attributes |> hasDeadAnnotation then None
-           else
-             Some
-               (Ast_mapper.default_mapper.structure_item mapper structure_item)
-         | Pstr_exception x ->
-           if x.pext_attributes |> hasDeadAnnotation then None
-           else
-             Some
-               (Ast_mapper.default_mapper.structure_item mapper structure_item)
-         | _ ->
-           Some (Ast_mapper.default_mapper.structure_item mapper structure_item))
-
-let signature mapper signature =
-  signature
-  |> filter_map ~f:(fun (signature_item : Parsetree.signature_item) ->
-         let test =
-           match signature_item.psig_desc with
-           | Psig_value {pval_attributes} ->
-             not (pval_attributes |> hasDeadAnnotation)
-           | _ -> true
-         in
-         if test then
-           Some (Ast_mapper.default_mapper.signature_item mapper signature_item)
-         else None)
-
-let () =
-  Ast_mapper.register "DeadPPX" (fun _argv ->
-      {Ast_mapper.default_mapper with signature; structure})
diff --git a/dead-code-ppx/dune b/dead-code-ppx/dune
deleted file mode 100644
index cc09b272..00000000
--- a/dead-code-ppx/dune
+++ /dev/null
@@ -1,9 +0,0 @@
-(executable
- (name DeadCodePPX)
- (public_name deadcodeppx.exe)
- (preprocess
-  (action
-   (run %{bin:cppo} -V OCAML:%{ocaml_version} %{input-file})))
- (libraries compilerlibs406)
- (flags
-  (:standard -w -9)))
diff --git a/lazyload-ppx/LazyLoad.ml b/lazyload-ppx/LazyLoad.ml
deleted file mode 100644
index f4779d90..00000000
--- a/lazyload-ppx/LazyLoad.ml
+++ /dev/null
@@ -1,469 +0,0 @@
-open Compilerlibs406
-open Ast_helper
-open Ast_mapper
-open Asttypes
-open Parsetree
-open Longident
-
-let attributeTxt (x : Parsetree.attribute) = (fst x).txt
-
-let mkAttribute ~loc ~txt =
-  ( (let open Location in
-    {loc; txt}),
-    Parsetree.PStr
-      [
-        Ast_helper.Str.eval
-          (Ast_helper.Exp.constant (Pconst_string ("-3", None)));
-      ] )
-
-let makeLoc ~loc ~txt = {Location.loc; txt}
-
-let hasMappedStructure = ref false
-
-module Resource = struct
-  type t = {name : string; loc : Location.t}
-
-  let compare {name = n1} {name = n2} = compare n1 n2
-end
-
-module ResourceSet = Set.Make (Resource)
-module SM = Map.Make (String)
-
-let jsResources = ref ResourceSet.empty
-
-let topLevelExprs = ref SM.empty
-
-let addTopLevelExpr bindingName expr =
-  let count = ref 0 in
-  let makeBindingName bindingName count =
-    match count = 0 with
-    | true -> bindingName
-    | false -> bindingName ^ "$" ^ string_of_int count
-  in
-  while SM.mem (makeBindingName bindingName !count) !topLevelExprs do
-    count := !count + 1
-  done;
-  let bindingName = makeBindingName bindingName !count in
-  let _ = topLevelExprs := SM.add bindingName expr !topLevelExprs in
-  bindingName
-
-let depIgnore = [mkAttribute ~loc:!default_loc ~txt:"warning"]
-
-let localModulePrefix = "$Local$"
-
-let genLocal {Resource.name; loc} =
-  with_default_loc loc (fun () ->
-      Str.modtype
-        (Mtd.mk
-           ~typ:
-             (Mty.typeof_ (Mod.ident {loc = !default_loc; txt = Lident name}))
-           {loc = !default_loc; txt = localModulePrefix ^ name}))
-
-let genTopLevelBinding (txt, exp) =
-  Vb.mk (Pat.var {loc = !default_loc; txt}) exp
-
-let structure mapper structure =
-  if !hasMappedStructure then default_mapper.structure mapper structure
-  else
-    let _ = hasMappedStructure := true in
-    let fileAttributes, restOfStructure =
-      List.partition
-        (fun str ->
-          match str with
-          | {pstr_desc = Pstr_attribute attr} -> attributeTxt attr = "bs.config"
-          | {pstr_desc = Pstr_extension (({txt = "bs.config"}, _), _)} -> true
-          | _ -> false)
-        structure
-    in
-    let newStructure = default_mapper.structure mapper restOfStructure in
-    fileAttributes
-    @ List.map genLocal (ResourceSet.elements !jsResources)
-    @ (match SM.bindings !topLevelExprs with
-      | [] -> []
-      | exprs -> [Str.value Nonrecursive (List.map genTopLevelBinding exprs)])
-    @ newStructure
-
-let nameFromLongident li =
-  match li |> Longident.flatten with name :: _ -> name | [] -> "empty"
-
-let expr mapper expr =
-  match expr with
-  | {
-      pexp_desc =
-        Pexp_extension
-          ( {txt = "reasonResource"; loc},
-            PStr
-              [
-                {
-                  pstr_desc =
-                    Pstr_eval ({pexp_desc = Pexp_construct ({txt}, _)}, _);
-                };
-              ] );
-    } as pexp ->
-    let name = txt |> nameFromLongident in
-    let _ = jsResources := ResourceSet.add {Resource.name; loc} !jsResources in
-    {
-      pexp with
-      pexp_desc =
-        Pexp_constraint
-          ( Exp.apply
-              (Exp.ident
-                 {
-                   loc = !default_loc;
-                   txt = Ldot (Lident "JSResource", "jSResource");
-                 })
-              [(Nolabel, Exp.constant (Pconst_string (name ^ ".bs", None)))],
-            Typ.constr
-              {loc = !default_loc; txt = Ldot (Lident "JSResource", "t")}
-              [
-                Typ.package
-                  {loc = !default_loc; txt = Lident (localModulePrefix ^ name)}
-                  [];
-              ] );
-    }
-  | {
-   pexp_desc =
-     Pexp_extension
-       ( {txt = "requireDeferred"; loc},
-         PStr
-           [
-             {pstr_desc = Pstr_eval ({pexp_desc = Pexp_construct ({txt}, _)}, _)};
-           ] );
-  } ->
-    let name = txt |> nameFromLongident in
-    let _ = jsResources := ResourceSet.add {Resource.name; loc} !jsResources in
-    let bindingName = "$" ^ name ^ "$Deferred" in
-    let actualExp =
-      Exp.constraint_
-        (Exp.apply
-           (Exp.ident
-              {
-                loc = !default_loc;
-                txt = Ldot (Lident "RequireDeferred", "make");
-              })
-           [(Nolabel, Exp.constant (Pconst_string (name ^ ".bs", None)))])
-        (Typ.constr
-           {loc = !default_loc; txt = Ldot (Lident "RequireDeferred", "t")}
-           [
-             Typ.package
-               {loc = !default_loc; txt = Lident (localModulePrefix ^ name)}
-               [];
-           ])
-    in
-    let bindingName = addTopLevelExpr bindingName actualExp in
-    Exp.ident {loc = !default_loc; txt = Lident bindingName}
-  | {
-   pexp_desc =
-     Pexp_extension
-       ( {txt = "requireCond"},
-         PStr
-           [
-             {
-               pstr_desc =
-                 Pstr_eval
-                   ( {
-                       pexp_desc =
-                         Pexp_tuple
-                           [
-                             conditionType;
-                             condition;
-                             {
-                               pexp_desc =
-                                 Pexp_extension
-                                   ( {txt = "obj"},
-                                     PStr
-                                       [
-                                         {
-                                           pstr_desc =
-                                             Pstr_eval
-                                               ( {
-                                                   pexp_desc =
-                                                     Pexp_record
-                                                       ( ( [
-                                                             ( {
-                                                                 txt =
-                                                                   Longident
-                                                                   .Lident
-                                                                     "true";
-                                                               },
-                                                               {
-                                                                 pexp_desc =
-                                                                   Pexp_construct
-                                                                     ( {
-                                                                         txt =
-                                                                           thenTxt;
-                                                                         loc =
-                                                                           thenLoc;
-                                                                       },
-                                                                       _ );
-                                                                 pexp_loc =
-                                                                   pexp_loc_then;
-                                                               } );
-                                                             ( {
-                                                                 txt =
-                                                                   Longident
-                                                                   .Lident
-                                                                     "false";
-                                                               },
-                                                               {
-                                                                 pexp_desc =
-                                                                   Pexp_construct
-                                                                     ( {
-                                                                         txt =
-                                                                           elseTxt;
-                                                                         loc =
-                                                                           elseLoc;
-                                                                       },
-                                                                       _ );
-                                                                 pexp_loc =
-                                                                   pexp_loc_else;
-                                                               } );
-                                                           ]
-                                                         | [
-                                                             ( {
-                                                                 txt =
-                                                                   Longident
-                                                                   .Lident
-                                                                     "false";
-                                                               },
-                                                               {
-                                                                 pexp_desc =
-                                                                   Pexp_construct
-                                                                     ( {
-                                                                         txt =
-                                                                           elseTxt;
-                                                                         loc =
-                                                                           elseLoc;
-                                                                       },
-                                                                       _ );
-                                                                 pexp_loc =
-                                                                   pexp_loc_else;
-                                                               } );
-                                                             ( {
-                                                                 txt =
-                                                                   Longident
-                                                                   .Lident
-                                                                     "true";
-                                                               },
-                                                               {
-                                                                 pexp_desc =
-                                                                   Pexp_construct
-                                                                     ( {
-                                                                         txt =
-                                                                           thenTxt;
-                                                                         loc =
-                                                                           thenLoc;
-                                                                       },
-                                                                       _ );
-                                                                 pexp_loc =
-                                                                   pexp_loc_then;
-                                                               } );
-                                                           ] ),
-                                                         _ );
-                                                 },
-                                                 [] );
-                                         };
-                                       ] );
-                             };
-                           ];
-                     },
-                     _ );
-             };
-           ] );
-  } ->
-    let thenModule = thenTxt |> nameFromLongident in
-    let elseModule = elseTxt |> nameFromLongident in
-    jsResources :=
-      ResourceSet.add {Resource.name = thenModule; loc = thenLoc} !jsResources;
-    jsResources :=
-      ResourceSet.add {Resource.name = elseModule; loc = elseLoc} !jsResources;
-    let bindingName = "$" ^ thenModule ^ "$OR$" ^ elseModule ^ "$RequireCond" in
-    let actualExp =
-      Exp.constraint_ ~loc:pexp_loc_then
-        (Exp.constraint_ ~loc:pexp_loc_else
-           (Exp.apply
-              (Exp.ident ~attrs:depIgnore
-                 {
-                   loc = !default_loc;
-                   txt = Ldot (Lident "RequireCond", "either");
-                 })
-              [
-                (Nolabel, conditionType);
-                (Nolabel, condition);
-                ( Nolabel,
-                  Exp.extension
-                    ( Location.mkloc "obj" !default_loc,
-                      Parsetree.PStr
-                        [
-                          Str.eval
-                            (Exp.record
-                               [
-                                 ( Location.mkloc (Longident.Lident "true")
-                                     !default_loc,
-                                   Exp.constant
-                                     (Pconst_string (thenModule ^ ".bs", None))
-                                 );
-                                 ( Location.mkloc (Longident.Lident "false")
-                                     !default_loc,
-                                   Exp.constant
-                                     (Pconst_string (elseModule ^ ".bs", None))
-                                 );
-                               ]
-                               None);
-                        ] ) );
-              ])
-           (Typ.package
-              {
-                loc = !default_loc;
-                txt = Lident (localModulePrefix ^ elseModule);
-              }
-              []))
-        (Typ.package
-           {loc = !default_loc; txt = Lident (localModulePrefix ^ thenModule)}
-           [])
-    in
-    let bindingName = addTopLevelExpr bindingName actualExp in
-    Exp.ident {loc = !default_loc; txt = Lident bindingName}
-  | {
-   pexp_desc =
-     Pexp_extension
-       ( {txt = "requireCond"},
-         PStr
-           [
-             {
-               pstr_desc =
-                 Pstr_eval
-                   ( {
-                       pexp_desc =
-                         Pexp_tuple
-                           [
-                             conditionType;
-                             condition;
-                             {pexp_desc = Pexp_construct ({txt; loc}, _)};
-                           ];
-                     },
-                     _ );
-             };
-           ] );
-  } ->
-    let name = txt |> nameFromLongident in
-    let _ = jsResources := ResourceSet.add {Resource.name; loc} !jsResources in
-    let bindingName = "$" ^ name ^ "$RequireCond" in
-    let actualExp =
-      Exp.constraint_
-        (Exp.apply
-           (Exp.ident ~attrs:depIgnore
-              {loc = !default_loc; txt = Ldot (Lident "RequireCond", "make")})
-           [
-             (Nolabel, conditionType);
-             (Nolabel, condition);
-             (Nolabel, Exp.constant (Pconst_string (name ^ ".bs", None)));
-           ])
-        (Typ.constr
-           {
-             loc = !default_loc;
-             txt = Ldot (Ldot (Lident "Js", "Nullable"), "t");
-           }
-           [
-             Typ.package
-               {loc = !default_loc; txt = Lident (localModulePrefix ^ name)}
-               [];
-           ])
-    in
-    let bindingName = addTopLevelExpr bindingName actualExp in
-    Exp.ident {loc = !default_loc; txt = Lident bindingName}
-  | _ -> default_mapper.expr mapper expr
-
-let module_expr mapper module_expr =
-  match module_expr with
-  | {
-      pmod_desc =
-        Pmod_extension
-          ( {txt = "lazyLoadComponent"},
-            PStr
-              [
-                {
-                  pstr_desc =
-                    Pstr_eval ({pexp_desc = Pexp_construct ({txt}, _)}, _);
-                };
-              ] );
-      pmod_loc;
-    } as pmod ->
-    with_default_loc pmod_loc (fun () ->
-        {
-          pmod with
-          pmod_desc =
-            Pmod_structure
-              [
-                Str.value Nonrecursive
-                  [
-                    Vb.mk
-                      (Pat.var {loc = !default_loc; txt = "reasonResource"})
-                      (expr mapper
-                         (Exp.extension
-                            ( {loc = !default_loc; txt = "reasonResource"},
-                              PStr
-                                [
-                                  Str.eval
-                                    (Exp.construct {loc = !default_loc; txt}
-                                       None);
-                                ] )));
-                  ];
-                Str.value Nonrecursive
-                  [
-                    Vb.mk
-                      (Pat.var {loc = !default_loc; txt = "makeProps"})
-                      (Exp.ident
-                         {loc = !default_loc; txt = Ldot (txt, "makeProps")});
-                  ];
-                Str.value Nonrecursive
-                  [
-                    Vb.mk
-                      (Pat.var {loc = !default_loc; txt = "make"})
-                      (Exp.fun_ Nolabel None
-                         (Pat.var {loc = !default_loc; txt = "props"})
-                         (Exp.apply
-                            (Exp.ident
-                               {
-                                 loc = !default_loc;
-                                 txt = Ldot (Lident "React", "createElement");
-                               })
-                            [
-                              ( Nolabel,
-                                Exp.letmodule
-                                  (makeLoc ~loc:!default_loc ~txt:"Comp")
-                                  (Mod.unpack
-                                     (Exp.apply
-                                        (Exp.ident
-                                           {
-                                             loc = !default_loc;
-                                             txt =
-                                               Ldot
-                                                 ( Lident "BootloaderResource",
-                                                   "read" );
-                                           })
-                                        [
-                                          ( Nolabel,
-                                            Exp.ident
-                                              {
-                                                loc = !default_loc;
-                                                txt = Lident "reasonResource";
-                                              } );
-                                        ]))
-                                  (Exp.ident
-                                     {
-                                       loc = !default_loc;
-                                       txt = Ldot (Lident "Comp", "make");
-                                     }) );
-                              ( Nolabel,
-                                Exp.ident
-                                  {loc = !default_loc; txt = Lident "props"} );
-                            ]));
-                  ];
-              ];
-        })
-  | _ -> default_mapper.module_expr mapper module_expr
-
-let () =
-  Ast_mapper.register "lazyLoad" (fun _argv ->
-      {default_mapper with structure; expr; module_expr})
diff --git a/lazyload-ppx/dune b/lazyload-ppx/dune
deleted file mode 100644
index bb4ce998..00000000
--- a/lazyload-ppx/dune
+++ /dev/null
@@ -1,9 +0,0 @@
-(executable
- (name LazyLoad)
- (public_name lazyLoad.exe)
- (preprocess
-  (action
-   (run %{bin:cppo} -V OCAML:%{ocaml_version} %{input-file})))
- (libraries compilerlibs406)
- (flags
-  (:standard -w -9)))
diff --git a/package.json b/package.json
index 5f5708d6..9853cba1 100644
--- a/package.json
+++ b/package.json
@@ -6,13 +6,12 @@
   "license": "MIT",
   "scripts": {
     "build": "dune build",
-    "build406": "cp src/dune src/dune.saved && cp src/dune.406 src/dune && npm run build && mv src/dune.saved src/dune || mv src/dune.saved src/dune",
     "clean": "dune clean -p reanalyze",
     "test": "node ./scripts/run_integration_tests.js",
     "install:examples": "(cd examples/deadcode && npm install) & (cd examples/termination && npm install)",
     "build:examples": "(cd examples/deadcode && npm run clean && npm run build && npm run analyze) & (cd examples/termination && npm run clean && npm run build && npm run analyze)",
-    "dce": "dune build && dune exec reanalyze.exe -- -suppress dead-code-ppx,src/compiler-libs-406 -unsuppress doesnotexist -dce-cmt _build",
-    "exception": "dune build && dune exec reanalyze.exe -- -exclude-paths src/compiler-libs-406/parser.ml -suppress src/ext,src/compiler-libs-406 -exception-cmt _build",
+    "dce": "dune build && dune exec reanalyze.exe -- -suppress dead-code-ppx -unsuppress doesnotexist -dce-cmt _build",
+    "exception": "dune build && dune exec reanalyze.exe -- -suppress src/ext -exception-cmt _build",
     "preversion": "npm test",
     "version": "node scripts/bump_version_module.js && git add -A src/",
     "postversion": "git push && git push --tags"
diff --git a/src/Annotation.ml b/src/Annotation.ml
index 3aae3663..e336aa38 100644
--- a/src/Annotation.ml
+++ b/src/Annotation.ml
@@ -2,7 +2,7 @@ type attributePayload =
   | BoolPayload of bool
   | ConstructPayload of string
   | FloatPayload of string
-  | IdentPayload of CL.Longident.t
+  | IdentPayload of Longident.t
   | IntPayload of string
   | StringPayload of string
   | TuplePayload of attributePayload list
@@ -17,24 +17,27 @@ let tagIsGenTypeOpaque s = s = "genType.opaque" || s = "gentype.opaque"
 let tagIsOneOfTheGenTypeAnnotations s =
   tagIsGenType s || tagIsGenTypeImport s || tagIsGenTypeOpaque s
 
-let rec getAttributePayload checkText (attributes : CL.Typedtree.attributes) =
-  let rec fromExpr (expr : CL.Parsetree.expression) =
+let rec getAttributePayload checkText (attributes : Typedtree.attributes) =
+  let rec fromExpr (expr : Parsetree.expression) =
     match expr with
-    | {pexp_desc = Pexp_constant (Pconst_string _ as cs)} ->
-      Some (StringPayload (cs |> Compat.getStringValue))
-    | {pexp_desc = Pexp_constant (Pconst_integer (n, _))} -> Some (IntPayload n)
-    | {pexp_desc = Pexp_constant (Pconst_float (s, _))} -> Some (FloatPayload s)
+    | { pexp_desc = Pexp_constant c} ->
+      let desc = Compat.constant_desc c in
+      (match desc with
+      | Pconst_string _ -> Some (StringPayload (desc |> Compat.getStringValue))
+      | Pconst_integer (n, _) -> Some (IntPayload n)
+      | Pconst_float (s, _) -> Some (FloatPayload s)
+      | _ -> None)
     | {
      pexp_desc = Pexp_construct ({txt = Lident (("true" | "false") as s)}, _);
      _;
     } ->
       Some (BoolPayload (s = "true"))
-    | {pexp_desc = Pexp_construct ({txt = CL.Longident.Lident "[]"}, None)} ->
+    | {pexp_desc = Pexp_construct ({txt = Longident.Lident "[]"}, None)} ->
       None
-    | {pexp_desc = Pexp_construct ({txt = CL.Longident.Lident "::"}, Some e)} ->
+    | {pexp_desc = Pexp_construct ({txt = Longident.Lident "::"}, Some e)} ->
       fromExpr e
     | {pexp_desc = Pexp_construct ({txt}, _); _} ->
-      Some (ConstructPayload (txt |> CL.Longident.flatten |> String.concat "."))
+      Some (ConstructPayload (txt |> Longident.flatten |> String.concat "."))
     | {pexp_desc = Pexp_tuple exprs | Pexp_array exprs} ->
       let payloads =
         exprs |> List.rev
@@ -76,7 +79,7 @@ let rec getAttributePayload checkText (attributes : CL.Typedtree.attributes) =
       | PTyp _ -> Some UnrecognizedPayload
     else getAttributePayload checkText tl
 
-let hasAttribute checkText (attributes : CL.Typedtree.attributes) =
+let hasAttribute checkText (attributes : Typedtree.attributes) =
   getAttributePayload checkText attributes <> None
 
 let isOcamlSuppressDeadWarning attributes =
diff --git a/src/Arnold.ml b/src/Arnold.ml
index 0e1b9c85..1d543957 100644
--- a/src/Arnold.ml
+++ b/src/Arnold.ml
@@ -136,7 +136,7 @@ module Stats = struct
         Format.fprintf ppf
           "@{<error>%s@} can only be called directly, or passed as labeled \
            argument"
-          (CL.Path.name path))
+          (Path.name path))
 
   let logHygieneMustHaveNamedArgument ~label ~loc =
     incr nHygieneErrors;
@@ -164,7 +164,7 @@ module Progress = struct
 end
 
 module Call = struct
-  type progressFunction = CL.Path.t
+  type progressFunction = Path.t
 
   type t =
     | FunctionCall of FunctionCall.t
@@ -172,7 +172,7 @@ module Call = struct
 
   let toString call =
     match call with
-    | ProgressFunction progressFunction -> "+" ^ CL.Path.name progressFunction
+    | ProgressFunction progressFunction -> "+" ^ Path.name progressFunction
     | FunctionCall functionCall -> FunctionCall.toString functionCall
 end
 
@@ -210,7 +210,7 @@ module Trace = struct
   let rec toString trace =
     match trace with
     | Tcall (ProgressFunction progressFunction, progress) ->
-      CL.Path.name progressFunction ^ ":" ^ Progress.toString progress
+      Path.name progressFunction ^ ":" ^ Progress.toString progress
     | Tcall (FunctionCall functionCall, progress) ->
       FunctionCall.toString functionCall ^ ":" ^ Progress.toString progress
     | Tnondet traces ->
@@ -335,14 +335,14 @@ module Command = struct
   type retOption = Trace.retOption
 
   type t =
-    | Call of Call.t * CL.Location.t
+    | Call of Call.t * Location.t
     | ConstrOption of retOption
     | Nondet of t list
     | Nothing
     | Sequence of t list
     | SwitchOption of {
         functionCall : FunctionCall.t;
-        loc : CL.Location.t;
+        loc : Location.t;
         some : t;
         none : t;
       }
@@ -454,7 +454,7 @@ module FunctionTable = struct
     try Hashtbl.find tbl functionName with Not_found -> assert false
 
   let isInFunctionInTable ~functionTable path =
-    Hashtbl.mem functionTable (CL.Path.name path)
+    Hashtbl.mem functionTable (Path.name path)
 
   let addFunction ~functionName (tbl : t) =
     if Hashtbl.mem tbl functionName then assert false;
@@ -480,18 +480,18 @@ end
 
 module FindFunctionsCalled = struct
   let traverseExpr ~callees =
-    let super = CL.Tast_mapper.default in
-    let expr (self : CL.Tast_mapper.mapper) (e : CL.Typedtree.expression) =
+    let super = Tast_mapper.default in
+    let expr (self : Tast_mapper.mapper) (e : Typedtree.expression) =
       (match e.exp_desc with
       | Texp_apply ({exp_desc = Texp_ident (callee, _, _)}, _args) ->
-        let functionName = CL.Path.name callee in
+        let functionName = Path.name callee in
         callees := !callees |> StringSet.add functionName
       | _ -> ());
       super.expr self e
     in
-    {super with CL.Tast_mapper.expr}
+    {super with Tast_mapper.expr}
 
-  let findCallees (expression : CL.Typedtree.expression) =
+  let findCallees (expression : Typedtree.expression) =
     let isFunction =
       match expression.exp_desc with Texp_function _ -> true | _ -> false
     in
@@ -505,7 +505,7 @@ module ExtendFunctionTable = struct
   (* Add functions passed a recursive function via a labeled argument,
      and functions calling progress functions, to the function table. *)
   let extractLabelledArgument ?(kindOpt = None)
-      (argOpt : CL.Typedtree.expression option) =
+      (argOpt : Typedtree.expression option) =
     match argOpt with
     | Some {exp_desc = Texp_ident (path, {loc}, _)} -> Some (path, loc)
     | Some
@@ -526,7 +526,7 @@ module ExtendFunctionTable = struct
     | Some
         {exp_desc = Texp_apply ({exp_desc = Texp_ident (path, {loc}, _)}, args)}
       when kindOpt <> None ->
-      let checkArg ((argLabel : CL.Asttypes.arg_label), _argOpt) =
+      let checkArg ((argLabel : Asttypes.arg_label), _argOpt) =
         match (argLabel, kindOpt) with
         | (Labelled l | Optional l), Some kind ->
           kind |> List.for_all (fun {Kind.label} -> label <> l)
@@ -536,12 +536,12 @@ module ExtendFunctionTable = struct
     | _ -> None
 
   let traverseExpr ~functionTable ~progressFunctions ~valueBindingsTable =
-    let super = CL.Tast_mapper.default in
-    let expr (self : CL.Tast_mapper.mapper) (e : CL.Typedtree.expression) =
+    let super = Tast_mapper.default in
+    let expr (self : Tast_mapper.mapper) (e : Typedtree.expression) =
       (match e.exp_desc with
       | Texp_ident (callee, _, _) -> (
         let loc = e.exp_loc in
-        match Hashtbl.find_opt valueBindingsTable (CL.Path.name callee) with
+        match Hashtbl.find_opt valueBindingsTable (Path.name callee) with
         | None -> ()
         | Some (id_pos, _, callees) ->
           if
@@ -549,7 +549,7 @@ module ExtendFunctionTable = struct
               (StringSet.is_empty
                  (StringSet.inter (Lazy.force callees) progressFunctions))
           then
-            let functionName = CL.Path.name callee in
+            let functionName = Path.name callee in
             if not (callee |> FunctionTable.isInFunctionInTable ~functionTable)
             then (
               functionTable |> FunctionTable.addFunction ~functionName;
@@ -562,9 +562,9 @@ module ExtendFunctionTable = struct
                       functionName printPos id_pos)))
       | Texp_apply ({exp_desc = Texp_ident (callee, _, _)}, args)
         when callee |> FunctionTable.isInFunctionInTable ~functionTable ->
-        let functionName = CL.Path.name callee in
+        let functionName = Path.name callee in
         args
-        |> List.iter (fun ((argLabel : CL.Asttypes.arg_label), argOpt) ->
+        |> List.iter (fun ((argLabel : Asttypes.arg_label), argOpt) ->
                match (argLabel, argOpt |> extractLabelledArgument) with
                | Labelled label, Some (path, loc)
                  when path |> FunctionTable.isInFunctionInTable ~functionTable
@@ -576,15 +576,15 @@ module ExtendFunctionTable = struct
                      (fun ppf () ->
                        Format.fprintf ppf
                          "@{<info>%s@} is parametric ~@{<info>%s@}=@{<info>%s@}"
-                         functionName label (CL.Path.name path))
+                         functionName label (Path.name path))
                | _ -> ())
       | _ -> ());
       super.expr self e
     in
-    {super with CL.Tast_mapper.expr}
+    {super with Tast_mapper.expr}
 
   let run ~functionTable ~progressFunctions ~valueBindingsTable
-      (expression : CL.Typedtree.expression) =
+      (expression : Typedtree.expression) =
     let traverseExpr =
       traverseExpr ~functionTable ~progressFunctions ~valueBindingsTable
     in
@@ -593,20 +593,20 @@ end
 
 module CheckExpressionWellFormed = struct
   let traverseExpr ~functionTable ~valueBindingsTable =
-    let super = CL.Tast_mapper.default in
+    let super = Tast_mapper.default in
     let checkIdent ~path ~loc =
       if path |> FunctionTable.isInFunctionInTable ~functionTable then
         Stats.logHygieneOnlyCallDirectly ~path ~loc
     in
-    let expr (self : CL.Tast_mapper.mapper) (e : CL.Typedtree.expression) =
+    let expr (self : Tast_mapper.mapper) (e : Typedtree.expression) =
       match e.exp_desc with
       | Texp_ident (path, {loc}, _) ->
         checkIdent ~path ~loc;
         e
       | Texp_apply ({exp_desc = Texp_ident (functionPath, _, _)}, args) ->
-        let functionName = CL.Path.name functionPath in
+        let functionName = Path.name functionPath in
         args
-        |> List.iter (fun ((argLabel : CL.Asttypes.arg_label), argOpt) ->
+        |> List.iter (fun ((argLabel : Asttypes.arg_label), argOpt) ->
                match argOpt |> ExtendFunctionTable.extractLabelledArgument with
                | Some (path, loc) -> (
                  match argLabel with
@@ -619,7 +619,7 @@ module CheckExpressionWellFormed = struct
                    then ()
                    else
                      match Hashtbl.find_opt valueBindingsTable functionName with
-                     | Some (_pos, (body : CL.Typedtree.expression), _)
+                     | Some (_pos, (body : Typedtree.expression), _)
                        when path
                             |> FunctionTable.isInFunctionInTable ~functionTable
                        ->
@@ -638,17 +638,17 @@ module CheckExpressionWellFormed = struct
                              Format.fprintf ppf
                                "Extend Function Table with @{<info>%s@} as \
                                 parametric ~@{<info>%s@}=@{<info>%s@}"
-                               functionName label (CL.Path.name path))
+                               functionName label (Path.name path))
                      | _ -> checkIdent ~path ~loc)
                  | Optional _ | Nolabel -> checkIdent ~path ~loc)
                | _ -> ());
         e
       | _ -> super.expr self e
     in
-    {super with CL.Tast_mapper.expr}
+    {super with Tast_mapper.expr}
 
   let run ~functionTable ~valueBindingsTable
-      (expression : CL.Typedtree.expression) =
+      (expression : Typedtree.expression) =
     let traverseExpr = traverseExpr ~functionTable ~valueBindingsTable in
     expression |> traverseExpr.expr traverseExpr |> ignore
 end
@@ -658,12 +658,12 @@ module Compile = struct
     currentFunctionName : FunctionName.t;
     functionTable : FunctionTable.t;
     innerRecursiveFunctions : (FunctionName.t, FunctionName.t) Hashtbl.t;
-    isProgressFunction : CL.Path.t -> bool;
+    isProgressFunction : Path.t -> bool;
   }
 
   module Ident = Compat.Ident
 
-  let rec expression ~ctx (expr : CL.Typedtree.expression) =
+  let rec expression ~ctx (expr : Typedtree.expression) =
     let {currentFunctionName; functionTable; isProgressFunction} = ctx in
     let loc = expr.exp_loc in
     let notImplemented case =
@@ -678,7 +678,7 @@ module Compile = struct
       let callee, args =
         match
           Hashtbl.find_opt ctx.innerRecursiveFunctions
-            (CL.Path.name calleeToRename)
+            (Path.name calleeToRename)
         with
         | Some innerFunctionName ->
           let innerFunctionDefinition =
@@ -689,21 +689,21 @@ module Compile = struct
           let argsFromKind =
             innerFunctionDefinition.kind
             |> List.map (fun (entry : Kind.entry) ->
-                   ( CL.Asttypes.Labelled entry.label,
+                   ( Asttypes.Labelled entry.label,
                      Some
                        {
                          expr with
                          exp_desc =
                            Texp_ident
-                             (CL.Path.Pident (Ident.create entry.label), l, vd);
+                             (Path.Pident (Ident.create entry.label), l, vd);
                        } ))
           in
-          ( CL.Path.Pident (Ident.create innerFunctionName),
+          ( Path.Pident (Ident.create innerFunctionName),
             argsFromKind @ argsToExtend )
         | None -> (calleeToRename, argsToExtend)
       in
       if callee |> FunctionTable.isInFunctionInTable ~functionTable then
-        let functionName = CL.Path.name callee in
+        let functionName = Path.name callee in
         let functionDefinition =
           functionTable |> FunctionTable.getFunctionDefinition ~functionName
         in
@@ -713,7 +713,7 @@ module Compile = struct
             args
             |> List.find_opt (fun arg ->
                    match arg with
-                   | CL.Asttypes.Labelled s, Some _ -> s = label
+                   | Asttypes.Labelled s, Some _ -> s = label
                    | _ -> false)
           in
           let argOpt =
@@ -730,17 +730,17 @@ module Compile = struct
               raise ArgError
             | Some (path, _pos)
               when path |> FunctionTable.isInFunctionInTable ~functionTable ->
-              let functionName = CL.Path.name path in
+              let functionName = Path.name path in
               {FunctionArgs.label; functionName}
             | Some (path, _pos)
               when functionTable
                    |> FunctionTable.functionGetKindOfLabel
                         ~functionName:currentFunctionName
-                        ~label:(CL.Path.name path)
+                        ~label:(Path.name path)
                    = Some []
                    (* TODO: when kinds are inferred, support and check non-empty kinds *)
               ->
-              let functionName = CL.Path.name path in
+              let functionName = Path.name path in
               {FunctionArgs.label; functionName}
             | _ ->
               Stats.logHygieneNamedArgValue ~label ~loc;
@@ -765,11 +765,11 @@ module Compile = struct
         match
           functionTable
           |> FunctionTable.functionGetKindOfLabel
-               ~functionName:currentFunctionName ~label:(CL.Path.name callee)
+               ~functionName:currentFunctionName ~label:(Path.name callee)
         with
         | Some kind when kind = Kind.empty ->
           Command.Call
-            (FunctionCall (CL.Path.name callee |> FunctionCall.noArgs), loc)
+            (FunctionCall (Path.name callee |> FunctionCall.noArgs), loc)
           |> evalArgs ~args ~ctx
         | Some _kind ->
           (* TODO when kinds are extended in future: check that args matches with kind
@@ -813,7 +813,7 @@ module Compile = struct
       if recFlag = Recursive then Stats.logHygieneNoNestedLetRec ~loc;
       let commands =
         (valueBindings
-        |> List.map (fun (vb : CL.Typedtree.value_binding) ->
+        |> List.map (fun (vb : Typedtree.value_binding) ->
                vb.vb_expr |> expression ~ctx))
         @ [inExpr |> expression ~ctx]
       in
@@ -889,7 +889,7 @@ module Compile = struct
          |> List.map
               (fun
                 ( _desc,
-                  (recordLabelDefinition : CL.Typedtree.record_label_definition)
+                  (recordLabelDefinition : Typedtree.record_label_definition)
                 )
               ->
                 match recordLabelDefinition with
@@ -906,7 +906,8 @@ module Compile = struct
     | Texp_tuple expressions | Texp_array expressions ->
       expressions |> List.map (expression ~ctx) |> Command.unorderedSequence
     | Texp_assert _ -> Command.nothing
-    | Texp_try (e, cases) ->
+    | Texp_try _ ->
+      let e, cases = expr.exp_desc |> Compat.getTexpTry in
       let cE = e |> expression ~ctx in
       let cCases = cases |> List.map (case ~ctx) |> Command.nondet in
       let open Command in
@@ -1052,7 +1053,7 @@ module Eval = struct
 
   let rec runFunctionCall ~cache ~callStack ~functionArgs ~functionTable
       ~madeProgressOn ~loc ~state functionCallToInstantiate : State.t =
-    let pos = loc.CL.Location.loc_start in
+    let pos = loc.Location.loc_start in
     let functionCall =
       functionCallToInstantiate
       |> FunctionCall.applySubstitution ~sub:functionArgs
@@ -1194,7 +1195,7 @@ module Eval = struct
     if !Common.Cli.debug then
       Log_.log "@[<v 2>@,@{<warning>Termination Analysis@} for @{<info>%s@}@]@."
         functionName;
-    let pos = loc.CL.Location.loc_start in
+    let pos = loc.Location.loc_start in
     let callStack = CallStack.create () in
     let functionArgs = FunctionArgs.empty in
     let functionCall = FunctionCall.noArgs functionName in
@@ -1219,7 +1220,7 @@ module Eval = struct
 end
 
 let progressFunctionsFromAttributes attributes =
-  let lidToString lid = lid |> CL.Longident.flatten |> String.concat "." in
+  let lidToString lid = lid |> Longident.flatten |> String.concat "." in
   let isProgress = ( = ) "progress" in
   if attributes |> Annotation.hasAttribute isProgress then
     Some
@@ -1235,11 +1236,11 @@ let progressFunctionsFromAttributes attributes =
   else None
 
 let traverseAst ~valueBindingsTable =
-  let super = CL.Tast_mapper.default in
-  let value_bindings (self : CL.Tast_mapper.mapper) (recFlag, valueBindings) =
+  let super = Tast_mapper.default in
+  let value_bindings (self : Tast_mapper.mapper) (recFlag, valueBindings) =
     (* Update the table of value bindings for variables *)
     valueBindings
-    |> List.iter (fun (vb : CL.Typedtree.value_binding) ->
+    |> List.iter (fun (vb : Typedtree.value_binding) ->
            match vb.vb_pat.pat_desc with
            #if OCAML_VERSION < (5, 2, 0)
            | Tpat_var (id, {loc = {loc_start = pos}}) ->
@@ -1247,17 +1248,17 @@ let traverseAst ~valueBindingsTable =
            | Tpat_var (id, {loc = {loc_start = pos}}, _) ->
            #endif
              let callees = lazy (FindFunctionsCalled.findCallees vb.vb_expr) in
-             Hashtbl.replace valueBindingsTable (CL.Ident.name id)
+             Hashtbl.replace valueBindingsTable (Ident.name id)
                (pos, vb.vb_expr, callees)
            | _ -> ());
     let progressFunctions, functionsToAnalyze =
-      if recFlag = CL.Asttypes.Nonrecursive then (StringSet.empty, [])
+      if recFlag = Asttypes.Nonrecursive then (StringSet.empty, [])
       else
         let progressFunctions0, functionsToAnalyze0 =
           valueBindings
           |> List.fold_left
                (fun (progressFunctions, functionsToAnalyze)
-                    (valueBinding : CL.Typedtree.value_binding) ->
+                    (valueBinding : Typedtree.value_binding) ->
                  match
                    progressFunctionsFromAttributes valueBinding.vb_attributes
                  with
@@ -1272,7 +1273,7 @@ let traverseAst ~valueBindingsTable =
                      #else
                      | Tpat_var (id, _, _) ->
                      #endif
-                       (CL.Ident.name id, valueBinding.vb_expr.exp_loc)
+                       (Ident.name id, valueBinding.vb_expr.exp_loc)
                        :: functionsToAnalyze
                      | _ -> functionsToAnalyze )))
                (StringSet.empty, [])
@@ -1282,18 +1283,18 @@ let traverseAst ~valueBindingsTable =
     if functionsToAnalyze <> [] then (
       let functionTable = FunctionTable.create () in
       let isProgressFunction path =
-        StringSet.mem (CL.Path.name path) progressFunctions
+        StringSet.mem (Path.name path) progressFunctions
       in
       let recursiveFunctions =
         List.fold_left
-          (fun defs (valueBinding : CL.Typedtree.value_binding) ->
+          (fun defs (valueBinding : Typedtree.value_binding) ->
             match valueBinding.vb_pat.pat_desc with
             #if OCAML_VERSION < (5, 2, 0)
             | Tpat_var (id, _) ->
             #else
             | Tpat_var (id, _, _) ->
             #endif
-               CL.Ident.name id :: defs
+               Ident.name id :: defs
             | _ -> defs)
           [] valueBindings
         |> List.rev
@@ -1355,15 +1356,15 @@ let traverseAst ~valueBindingsTable =
            super.value_binding self valueBinding |> ignore);
     (recFlag, valueBindings)
   in
-  {super with CL.Tast_mapper.value_bindings}
+  {super with Tast_mapper.value_bindings}
 
-let processStructure (structure : CL.Typedtree.structure) =
+let processStructure (structure : Typedtree.structure) =
   Stats.newFile ();
   let valueBindingsTable = Hashtbl.create 1 in
   let traverseAst = traverseAst ~valueBindingsTable in
   structure |> traverseAst.structure traverseAst |> ignore
 
-let processCmt (cmt_infos : CL.Cmt_format.cmt_infos) =
+let processCmt (cmt_infos : Cmt_format.cmt_infos) =
   match cmt_infos.cmt_annots with
   | Interface _ -> ()
   | Implementation structure -> processStructure structure
diff --git a/src/CL.ml b/src/CL.ml
deleted file mode 100644
index 9f803a31..00000000
--- a/src/CL.ml
+++ /dev/null
@@ -1,18 +0,0 @@
-(* Compiler libs: use the host compiler libs except on 4.06 use vendored ones.
-   This allows to target 4.06 on any compiler by overriding OCAML_VERSION. *)
-
-#if OCAML_VERSION <= (4, 06, 1)
-include Compilerlibs406
-#else
-module Asttypes = Asttypes
-module Cmt_format = Cmt_format
-module Ident = Ident
-module Location = Location
-module Longident = Longident
-module Misc = Misc
-module Parsetree = Parsetree
-module Path = Path
-module Tast_mapper = Tast_mapper
-module Typedtree = Typedtree
-module Types = Types
-#endif
diff --git a/src/Common.ml b/src/Common.ml
index 69d68d97..8a960267 100644
--- a/src/Common.ml
+++ b/src/Common.ml
@@ -40,7 +40,7 @@ end
 module StringSet = Set.Make (String)
 
 module LocSet = Set.Make (struct
-  include CL.Location
+  include Location
 
   let compare = compare
 end)
@@ -63,7 +63,7 @@ module FileReferences = struct
   let findSet table key =
     try FileHash.find table key with Not_found -> FileSet.empty
 
-  let add (locFrom : CL.Location.t) (locTo : CL.Location.t) =
+  let add (locFrom : Location.t) (locTo : Location.t) =
     let key = locFrom.loc_start.pos_fname in
     let set = findSet table key in
     FileHash.replace table key (FileSet.add locTo.loc_start.pos_fname set)
@@ -94,13 +94,13 @@ module Path = struct
     | [] -> ""
 
   let onOkPath ~whenContainsApply ~f path =
-    match path |> CL.Path.flatten with
-    | `Ok (id, mods) -> f (CL.Ident.name id :: mods |> String.concat ".")
+    match path |> Path.flatten with
+    | `Ok (id, mods) -> f (Ident.name id :: mods |> String.concat ".")
     | `Contains_apply -> whenContainsApply
 
   let fromPathT path =
-    match path |> CL.Path.flatten with
-    | `Ok (id, mods) -> CL.Ident.name id :: mods |> List.rev_map Name.create
+    match path |> Path.flatten with
+    | `Ok (id, mods) -> Ident.name id :: mods |> List.rev_map Name.create
     | `Contains_apply -> []
 
   let moduleToImplementation path =
diff --git a/src/Compat.ml b/src/Compat.ml
index ff9200ce..5ea8ff4c 100644
--- a/src/Compat.ml
+++ b/src/Compat.ml
@@ -1,5 +1,3 @@
-open CL
-
 #if OCAML_VERSION >= (4, 08, 0)
 let getStringTag s = match s with
   | Format.String_tag(s) -> s
@@ -174,7 +172,10 @@ let getMtyFunctorModuleType  (moduleType: Types.module_type) = match moduleType
   | _ -> None
 
 let getTexpMatch desc = match desc with
-#if OCAML_VERSION >= (4, 08, 0)
+#if OCAML_VERSION >= (5, 3, 0)
+  | Typedtree.Texp_match(e, cases, _values, partial) ->
+    (e, cases, partial)
+#elif OCAML_VERSION >= (4, 08, 0)
   | Typedtree.Texp_match(e, cases, partial) ->
     (e, cases, partial)
 #else
@@ -183,8 +184,26 @@ let getTexpMatch desc = match desc with
 #endif
   | _ -> assert false
 
+let getTexpTry desc = match desc with
+#if OCAML_VERSION >= (5, 3, 0)
+  | Typedtree.Texp_try(e, cases, _values) ->
+    (e, cases)
+#else
+  | Typedtree.Texp_try(e, cases) ->
+    (e, cases)
+#endif
+  | _ -> assert false
+
 let texpMatchGetExceptions desc = match desc with
-#if OCAML_VERSION >= (4, 08, 0)
+#if OCAML_VERSION >= (5, 3, 0)
+  | Typedtree.Texp_match(_, cases, _, _) ->
+    cases
+    |> List.filter_map(fun ({Typedtree.c_lhs= pat}) ->
+          match pat.pat_desc with
+          | Tpat_exception({pat_desc}) -> Some(pat_desc)
+          | _ -> None
+          )
+#elif OCAML_VERSION >= (4, 08, 0)
   | Typedtree.Texp_match(_, cases, _) ->
     cases
     |> List.filter_map(fun ({Typedtree.c_lhs= pat}) ->
@@ -241,3 +260,29 @@ let get_desc = Types.get_desc
 #else
 let get_desc x = x.Types.desc
 #endif
+
+let constant_desc d =
+#if OCAML_VERSION >= (5, 3, 0)
+  d.Parsetree.pconst_desc
+#else
+  d
+#endif
+
+let extractValueDependencies (cmt_infos : Cmt_format.cmt_infos) =
+#if OCAML_VERSION >= (5, 3, 0)
+  let deps = ref [] in
+  let process_dependency (_, uid1, uid2) =
+    match
+      ( Types.Uid.Tbl.find_opt cmt_infos.cmt_uid_to_decl uid1,
+        Types.Uid.Tbl.find_opt cmt_infos.cmt_uid_to_decl uid2 )
+    with
+    | Some (Value v1), Some (Value v2) ->
+      deps := (v1.val_val, v2.val_val) :: !deps
+    | _ -> ()
+  in
+  let items = cmt_infos.cmt_declaration_dependencies in
+  List.iter process_dependency items;
+  List.rev !deps
+#else
+  cmt_infos.cmt_value_dependencies
+#endif
diff --git a/src/DeadCode.ml b/src/DeadCode.ml
index 93df36f2..767fddce 100644
--- a/src/DeadCode.ml
+++ b/src/DeadCode.ml
@@ -1,14 +1,14 @@
 open DeadCommon
 
-let processSignature ~doValues ~doTypes (signature : CL.Types.signature) =
+let processSignature ~doValues ~doTypes (signature : Types.signature) =
   signature
   |> List.iter (fun sig_item ->
          DeadValue.processSignatureItem ~doValues ~doTypes
-           ~moduleLoc:CL.Location.none
+           ~moduleLoc:Location.none
            ~path:[!Common.currentModuleName]
            sig_item)
 
-let processCmt ~cmtFilePath (cmt_infos : CL.Cmt_format.cmt_infos) =
+let processCmt ~cmtFilePath (cmt_infos : Cmt_format.cmt_infos) =
   (match cmt_infos.cmt_annots with
   | Interface signature ->
     ProcessDeadAnnotations.signature signature;
@@ -25,8 +25,9 @@ let processCmt ~cmtFilePath (cmt_infos : CL.Cmt_format.cmt_infos) =
          Ideally, the handling should be less location-based, just like other language aspects. *)
       false
     in
+    let cmt_value_dependencies = Compat.extractValueDependencies cmt_infos in
     DeadValue.processStructure ~doTypes:true ~doExternals
-      ~cmt_value_dependencies:cmt_infos.cmt_value_dependencies structure
+      ~cmt_value_dependencies structure
   | _ -> ());
   DeadType.TypeDependencies.forceDelayedItems ();
   DeadType.TypeDependencies.clear ()
diff --git a/src/DeadCommon.ml b/src/DeadCommon.ml
index fdab04a6..e2dbc266 100644
--- a/src/DeadCommon.ml
+++ b/src/DeadCommon.ml
@@ -26,7 +26,7 @@ end
 module Current = struct
   let bindings = ref PosSet.empty
 
-  let lastBinding = ref CL.Location.none
+  let lastBinding = ref Location.none
 
   (** max end position of a value reported dead *)
   let maxValuePosEnd = ref Lexing.dummy_pos
@@ -133,7 +133,7 @@ type posAdjustment = FirstVariant | OtherVariant | Nothing
 
 type decl = {
   declKind : DeclKind.t;
-  moduleLoc : CL.Location.t;
+  moduleLoc : Location.t;
   posAdjustment : posAdjustment;
   path : Path.t;
   pos : Lexing.position;
@@ -178,13 +178,13 @@ let declGetLoc decl =
       {decl.posStart with pos_cnum = cnumWithOffset}
     else decl.posStart
   in
-  {CL.Location.loc_start; loc_end = decl.posEnd; loc_ghost = false}
+  {Location.loc_start; loc_end = decl.posEnd; loc_ghost = false}
 
-let addValueReference ~addFileReference ~(locFrom : CL.Location.t)
-    ~(locTo : CL.Location.t) =
+let addValueReference ~addFileReference ~(locFrom : Location.t)
+    ~(locTo : Location.t) =
   let lastBinding = !Current.lastBinding in
   let locFrom =
-    match lastBinding = CL.Location.none with
+    match lastBinding = Location.none with
     | true -> locFrom
     | false -> lastBinding
   in
@@ -260,7 +260,7 @@ let iterFilesFromRootsToLeaves iterFun =
            |> FileSet.iter (fun fileName ->
                   let pos = {Lexing.dummy_pos with pos_fname = fileName} in
                   let loc =
-                    {CL.Location.none with loc_start = pos; loc_end = pos}
+                    {Location.none with loc_start = pos; loc_end = pos}
                   in
                   if Config.warnOnCircularDependencies then
                     Log_.warning ~loc ~name:"Warning Dead Analysis Cycle"
@@ -330,10 +330,10 @@ module ProcessDeadAnnotations = struct
       pos |> annotateLive
 
   let collectExportLocations ~doGenType =
-    let super = CL.Tast_mapper.default in
+    let super = Tast_mapper.default in
     let currentlyDisableWarnings = ref false in
     let value_binding self
-        ({vb_attributes; vb_pat} as value_binding : CL.Typedtree.value_binding)
+        ({vb_attributes; vb_pat} as value_binding : Typedtree.value_binding)
         =
       (match vb_pat.pat_desc with
       #if OCAML_VERSION < (5, 2, 0)
@@ -345,16 +345,16 @@ module ProcessDeadAnnotations = struct
       #endif
         if !currentlyDisableWarnings then pos |> annotateLive;
         vb_attributes
-        |> processAttributes ~doGenType ~name:(id |> CL.Ident.name) ~pos
+        |> processAttributes ~doGenType ~name:(id |> Ident.name) ~pos
       | _ -> ());
       super.value_binding self value_binding
     in
-    let type_kind toplevelAttrs self (typeKind : CL.Typedtree.type_kind) =
+    let type_kind toplevelAttrs self (typeKind : Typedtree.type_kind) =
       (match typeKind with
       | Ttype_record labelDeclarations ->
         labelDeclarations
         |> List.iter
-             (fun ({ld_attributes; ld_loc} : CL.Typedtree.label_declaration) ->
+             (fun ({ld_attributes; ld_loc} : Typedtree.label_declaration) ->
                toplevelAttrs @ ld_attributes
                |> processAttributes ~doGenType:false ~name:""
                     ~pos:ld_loc.loc_start)
@@ -362,7 +362,7 @@ module ProcessDeadAnnotations = struct
         constructorDeclarations
         |> List.iter
              (fun
-               ({cd_attributes; cd_loc} : CL.Typedtree.constructor_declaration)
+               ({cd_attributes; cd_loc} : Typedtree.constructor_declaration)
              ->
                toplevelAttrs @ cd_attributes
                |> processAttributes ~doGenType:false ~name:""
@@ -370,7 +370,7 @@ module ProcessDeadAnnotations = struct
       | _ -> ());
       super.type_kind self typeKind
     in
-    let type_declaration self (typeDeclaration : CL.Typedtree.type_declaration)
+    let type_declaration self (typeDeclaration : Typedtree.type_declaration)
         =
       let attributes = typeDeclaration.typ_attributes in
       let _ = type_kind attributes self typeDeclaration.typ_kind in
@@ -379,13 +379,13 @@ module ProcessDeadAnnotations = struct
     let value_description self
         ({val_attributes; val_id; val_val = {val_loc = {loc_start = pos}}} as
          value_description :
-          CL.Typedtree.value_description) =
+          Typedtree.value_description) =
       if !currentlyDisableWarnings then pos |> annotateLive;
       val_attributes
-      |> processAttributes ~doGenType ~name:(val_id |> CL.Ident.name) ~pos;
+      |> processAttributes ~doGenType ~name:(val_id |> Ident.name) ~pos;
       super.value_description self value_description
     in
-    let structure_item self (item : CL.Typedtree.structure_item) =
+    let structure_item self (item : Typedtree.structure_item) =
       (match item.str_desc with
       | Tstr_attribute attribute
         when [attribute] |> Annotation.isOcamlSuppressDeadWarning ->
@@ -393,13 +393,13 @@ module ProcessDeadAnnotations = struct
       | _ -> ());
       super.structure_item self item
     in
-    let structure self (structure : CL.Typedtree.structure) =
+    let structure self (structure : Typedtree.structure) =
       let oldDisableWarnings = !currentlyDisableWarnings in
       super.structure self structure |> ignore;
       currentlyDisableWarnings := oldDisableWarnings;
       structure
     in
-    let signature_item self (item : CL.Typedtree.signature_item) =
+    let signature_item self (item : Typedtree.signature_item) =
       (match item.sig_desc with
       | Tsig_attribute attribute
         when [attribute] |> Annotation.isOcamlSuppressDeadWarning ->
@@ -407,7 +407,7 @@ module ProcessDeadAnnotations = struct
       | _ -> ());
       super.signature_item self item
     in
-    let signature self (signature : CL.Typedtree.signature) =
+    let signature self (signature : Typedtree.signature) =
       let oldDisableWarnings = !currentlyDisableWarnings in
       super.signature self signature |> ignore;
       currentlyDisableWarnings := oldDisableWarnings;
@@ -445,7 +445,7 @@ let getPosAnnotation decl =
   | true -> decl.posEnd
   | false -> decl.posStart
 
-let addDeclaration_ ?posEnd ?posStart ~declKind ~path ~(loc : CL.Location.t)
+let addDeclaration_ ?posEnd ?posStart ~declKind ~path ~(loc : Location.t)
     ?(posAdjustment = Nothing) ~moduleLoc (name : Name.t) =
   let pos = loc.loc_start in
   let posStart =
@@ -482,7 +482,7 @@ let addDeclaration_ ?posEnd ?posStart ~declKind ~path ~(loc : CL.Location.t)
     in
     PosHash.replace decls pos decl)
 
-let addValueDeclaration ?(isToplevel = true) ~(loc : CL.Location.t) ~moduleLoc
+let addValueDeclaration ?(isToplevel = true) ~(loc : Location.t) ~moduleLoc
     ?(optionalArgs = OptionalArgs.empty) ~path ~sideEffects name =
   name
   |> addDeclaration_
diff --git a/src/DeadException.ml b/src/DeadException.ml
index dd935ebc..bfe8a616 100644
--- a/src/DeadException.ml
+++ b/src/DeadException.ml
@@ -1,12 +1,12 @@
 open DeadCommon
 open Common
 
-type item = {exceptionPath : Path.t; locFrom : CL.Location.t}
+type item = {exceptionPath : Path.t; locFrom : Location.t}
 
 let delayedItems = ref []
 let declarations = Hashtbl.create 1
 
-let add ~path ~loc ~(strLoc : CL.Location.t) name =
+let add ~path ~loc ~(strLoc : Location.t) name =
   let exceptionPath = name :: path in
   Hashtbl.add declarations exceptionPath loc;
   name
@@ -23,7 +23,7 @@ let forceDelayedItems () =
          | Some locTo ->
            addValueReference ~addFileReference:true ~locFrom ~locTo)
 
-let markAsUsed ~(locFrom : CL.Location.t) ~(locTo : CL.Location.t) path_ =
+let markAsUsed ~(locFrom : Location.t) ~(locTo : Location.t) path_ =
   if locTo.loc_ghost then
     (* Probably defined in another file, delay processing and check at the end *)
     let exceptionPath =
diff --git a/src/DeadModules.ml b/src/DeadModules.ml
index 708caa49..4858848c 100644
--- a/src/DeadModules.ml
+++ b/src/DeadModules.ml
@@ -9,7 +9,7 @@ let markDead ~isType ~loc path =
     | Some _ -> ()
     | _ -> Hashtbl.replace table moduleName (false, loc)
 
-let markLive ~isType ~(loc : CL.Location.t) path =
+let markLive ~isType ~(loc : Location.t) path =
   if active () then
     let moduleName = path |> Common.Path.toModuleName ~isType in
     match Hashtbl.find_opt table moduleName with
@@ -28,7 +28,7 @@ let checkModuleDead ~fileName:pos_fname moduleName =
           let pos =
             {Lexing.pos_fname; pos_lnum = 0; pos_bol = 0; pos_cnum = 0}
           in
-          {CL.Location.loc_start = pos; loc_end = pos; loc_ghost = false}
+          {Location.loc_start = pos; loc_end = pos; loc_ghost = false}
         else loc
       in
       Log_.warning ~loc ~name:"Warning Dead Module" (fun ppf () ->
diff --git a/src/DeadOptionalArgs.ml b/src/DeadOptionalArgs.ml
index 2b1ab856..a5993c47 100644
--- a/src/DeadOptionalArgs.ml
+++ b/src/DeadOptionalArgs.ml
@@ -12,7 +12,7 @@ type item = {
 let delayedItems = (ref [] : item list ref)
 let functionReferences = (ref [] : (Lexing.position * Lexing.position) list ref)
 
-let addFunctionReference ~(locFrom : CL.Location.t) ~(locTo : CL.Location.t) =
+let addFunctionReference ~(locFrom : Location.t) ~(locTo : Location.t) =
   if active () then
     let posTo = locTo.loc_start in
     let posFrom = locFrom.loc_start in
@@ -28,7 +28,7 @@ let addFunctionReference ~(locFrom : CL.Location.t) ~(locTo : CL.Location.t) =
           (posFrom |> posToString) (posTo |> posToString);
       functionReferences := (posFrom, posTo) :: !functionReferences)
 
-let rec hasOptionalArgs (texpr : CL.Types.type_expr) =
+let rec hasOptionalArgs (texpr : Types.type_expr) =
   match Compat.get_desc texpr with
   | _ when not (active ()) -> false
   | Tarrow (Optional _, _tFrom, _tTo, _) -> true
@@ -37,7 +37,7 @@ let rec hasOptionalArgs (texpr : CL.Types.type_expr) =
   | Tsubst _ -> hasOptionalArgs (Compat.getTSubst (Compat.get_desc texpr))
   | _ -> false
 
-let rec fromTypeExpr (texpr : CL.Types.type_expr) =
+let rec fromTypeExpr (texpr : Types.type_expr) =
   match Compat.get_desc texpr with
   | _ when not (active ()) -> []
   | Tarrow (Optional s, _tFrom, tTo, _) -> s :: fromTypeExpr tTo
@@ -46,7 +46,7 @@ let rec fromTypeExpr (texpr : CL.Types.type_expr) =
   | Tsubst _ -> fromTypeExpr (Compat.getTSubst (Compat.get_desc texpr))
   | _ -> []
 
-let addReferences ~(locFrom : CL.Location.t) ~(locTo : CL.Location.t) ~path
+let addReferences ~(locFrom : Location.t) ~(locTo : Location.t) ~path
     (argNames, argNamesMaybe) =
   if active () then (
     let posTo = locTo.loc_start in
diff --git a/src/DeadType.ml b/src/DeadType.ml
index 7e8da3e9..0bac6944 100644
--- a/src/DeadType.ml
+++ b/src/DeadType.ml
@@ -6,7 +6,7 @@ open DeadCommon
 module TypeLabels = struct
   (* map from type path (for record/variant label) to its location *)
 
-  let table = (Hashtbl.create 256 : (Path.t, CL.Location.t) Hashtbl.t)
+  let table = (Hashtbl.create 256 : (Path.t, Location.t) Hashtbl.t)
 
   let add path loc = Hashtbl.replace table path loc
 
@@ -27,15 +27,15 @@ module TypeDependencies = struct
   let clear () = delayedItems := []
 
   let processTypeDependency
-      ( ({loc_start = posTo; loc_ghost = ghost1} : CL.Location.t),
-        ({loc_start = posFrom; loc_ghost = ghost2} : CL.Location.t) ) =
+      ( ({loc_start = posTo; loc_ghost = ghost1} : Location.t),
+        ({loc_start = posFrom; loc_ghost = ghost2} : Location.t) ) =
     if (not ghost1) && (not ghost2) && posTo <> posFrom then
       addTypeReference ~posTo ~posFrom
 
   let forceDelayedItems () = List.iter processTypeDependency !delayedItems
 end
 
-let extendTypeDependencies (loc1 : CL.Location.t) (loc2 : CL.Location.t) =
+let extendTypeDependencies (loc1 : Location.t) (loc2 : Location.t) =
   if loc1.loc_start <> loc2.loc_start then (
     if !Common.Cli.debug then
       Log_.item "extendTypeDependencies %s --> %s@."
@@ -83,15 +83,15 @@ let addTypeDependenciesInnerModule ~pathToType ~loc ~typeLabelName =
       extendTypeDependencies loc2 loc
   | None -> TypeLabels.add path loc
 
-let addDeclaration ~(typeId : CL.Ident.t)
+let addDeclaration ~(typeId : Ident.t)
     ~(typeKind : ('a, 'b) Compat.type_kind) =
   let currentModulePath = ModulePath.getCurrent () in
   let pathToType =
-    (typeId |> CL.Ident.name |> Name.create)
+    (typeId |> Ident.name |> Name.create)
     :: (currentModulePath.path @ [!Common.currentModuleName])
   in
   let processTypeLabel ?(posAdjustment = Nothing) typeLabelName ~declKind
-      ~(loc : CL.Location.t) =
+      ~(loc : Location.t) =
     addDeclaration_ ~declKind ~path:pathToType ~loc
       ~moduleLoc:currentModulePath.loc ~posAdjustment typeLabelName;
     addTypeDependenciesAcrossFiles ~pathToType ~loc ~typeLabelName;
@@ -101,20 +101,20 @@ let addDeclaration ~(typeId : CL.Ident.t)
   match typeKind with
   | Type_record (l, _) ->
     List.iter
-      (fun {CL.Types.ld_id; ld_loc} ->
-        CL.Ident.name ld_id |> Name.create
+      (fun {Types.ld_id; ld_loc} ->
+        Ident.name ld_id |> Name.create
         |> processTypeLabel ~declKind:RecordLabel ~loc:ld_loc)
       l
   | Type_variant _ ->
     List.iteri
-      (fun i {CL.Types.cd_id; cd_loc} ->
+      (fun i {Types.cd_id; cd_loc} ->
         let posAdjustment =
           (* In Res the variant loc can include the | and spaces after it *)
           if Log_.posLanguage cd_loc.loc_start = Res then
             if i = 0 then FirstVariant else OtherVariant
           else Nothing
         in
-        CL.Ident.name cd_id |> Name.create
+        Ident.name cd_id |> Name.create
         |> processTypeLabel ~declKind:VariantCase ~loc:cd_loc ~posAdjustment)
       (Compat.getTypeVariant typeKind)
   | _ -> ()
diff --git a/src/DeadValue.ml b/src/DeadValue.ml
index 66a44a5c..e051c5ab 100644
--- a/src/DeadValue.ml
+++ b/src/DeadValue.ml
@@ -4,7 +4,7 @@ open DeadCommon
 
 let checkAnyValueBindingWithNoSideEffects
     ({vb_pat = {pat_desc}; vb_expr = expr; vb_loc = loc} :
-      CL.Typedtree.value_binding) =
+      Typedtree.value_binding) =
   match pat_desc with
   | Tpat_any when (not (SideEffects.checkExpr expr)) && not loc.loc_ghost ->
     let name = "_" |> Name.create ~isInterface:false in
@@ -15,7 +15,7 @@ let checkAnyValueBindingWithNoSideEffects
          ~sideEffects:false
   | _ -> ()
 
-let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
+let collectValueBinding super self (vb : Typedtree.value_binding) =
   let oldCurrentBindings = !Current.bindings in
   let oldLastBinding = !Current.lastBinding in
   checkAnyValueBindingWithNoSideEffects vb;
@@ -31,7 +31,7 @@ let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
         ({pat_desc = Tpat_any}, id, {loc = {loc_start; loc_ghost} as loc}, _)
     #endif
       when (not loc_ghost) && not vb.vb_loc.loc_ghost ->
-      let name = CL.Ident.name id |> Name.create ~isInterface:false in
+      let name = Ident.name id |> Name.create ~isInterface:false in
       let optionalArgs =
         vb.vb_expr.exp_type |> DeadOptionalArgs.fromTypeExpr
         |> OptionalArgs.fromList
@@ -52,7 +52,7 @@ let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
       in
       (if (not exists) && not isFirstClassModule then
        (* This is never toplevel currently *)
-       let isToplevel = oldLastBinding = CL.Location.none in
+       let isToplevel = oldLastBinding = Location.none in
        let sideEffects = SideEffects.checkExpr vb.vb_expr in
        name
        |> addValueDeclaration ~isToplevel ~loc ~moduleLoc:currentModulePath.loc
@@ -81,12 +81,12 @@ let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
   in
   Current.bindings := PosSet.add loc.loc_start !Current.bindings;
   Current.lastBinding := loc;
-  let r = super.CL.Tast_mapper.value_binding self vb in
+  let r = super.Tast_mapper.value_binding self vb in
   Current.bindings := oldCurrentBindings;
   Current.lastBinding := oldLastBinding;
   r
 
-let processOptionalArgs ~expType ~(locFrom : CL.Location.t) ~locTo ~path args =
+let processOptionalArgs ~expType ~(locFrom : Location.t) ~locTo ~path args =
   if expType |> DeadOptionalArgs.hasOptionalArgs then (
     let supplied = ref [] in
     let suppliedMaybe = ref [] in
@@ -96,13 +96,13 @@ let processOptionalArgs ~expType ~(locFrom : CL.Location.t) ~locTo ~path args =
              match arg with
              | Some
                  {
-                   CL.Typedtree.exp_desc =
+                   Typedtree.exp_desc =
                      Texp_construct (_, {cstr_name = "Some"}, _);
                  } ->
                Some true
              | Some
                  {
-                   CL.Typedtree.exp_desc =
+                   Typedtree.exp_desc =
                      Texp_construct (_, {cstr_name = "None"}, _);
                  } ->
                Some false
@@ -110,39 +110,39 @@ let processOptionalArgs ~expType ~(locFrom : CL.Location.t) ~locTo ~path args =
              | None -> Some false
            in
            match lbl with
-           | CL.Asttypes.Optional s when not locFrom.loc_ghost ->
+           | Asttypes.Optional s when not locFrom.loc_ghost ->
              if argIsSupplied <> Some false then supplied := s :: !supplied;
              if argIsSupplied = None then suppliedMaybe := s :: !suppliedMaybe
            | _ -> ());
     (!supplied, !suppliedMaybe)
     |> DeadOptionalArgs.addReferences ~locFrom ~locTo ~path)
 
-let rec collectExpr super self (e : CL.Typedtree.expression) =
+let rec collectExpr super self (e : Typedtree.expression) =
   let locFrom = e.exp_loc in
   (match e.exp_desc with
-  | Texp_ident (_path, _, {CL.Types.val_loc = {loc_ghost = false; _} as locTo})
+  | Texp_ident (_path, _, {Types.val_loc = {loc_ghost = false; _} as locTo})
     ->
-    (* if CL.Path.name _path = "rc" then assert false; *)
-    if locFrom = locTo && _path |> CL.Path.name = "emptyArray" then (
+    (* if Path.name _path = "rc" then assert false; *)
+    if locFrom = locTo && _path |> Path.name = "emptyArray" then (
       (* Work around lowercase jsx with no children producing an artifact `emptyArray`
          which is called from its own location as many things are generated on the same location. *)
       if !Common.Cli.debug then
         Log_.item "addDummyReference %s --> %s@."
-          (CL.Location.none.loc_start |> posToString)
+          (Location.none.loc_start |> posToString)
           (locTo.loc_start |> posToString);
-      ValueReferences.add locTo.loc_start CL.Location.none.loc_start)
+      ValueReferences.add locTo.loc_start Location.none.loc_start)
     else addValueReference ~addFileReference:true ~locFrom ~locTo
   | Texp_apply
       ( {
           exp_desc =
             Texp_ident
-              (path, _, {CL.Types.val_loc = {loc_ghost = false; _} as locTo});
+              (path, _, {Types.val_loc = {loc_ghost = false; _} as locTo});
           exp_type;
         },
         args ) ->
     args
     |> processOptionalArgs ~expType:exp_type
-         ~locFrom:(locFrom : CL.Location.t)
+         ~locFrom:(locFrom : Location.t)
          ~locTo ~path
   | Texp_let
       ( (* generated for functions with optional args *)
@@ -160,7 +160,7 @@ let rec collectExpr super self (e : CL.Typedtree.expression) =
                   Texp_ident
                     ( path,
                       _,
-                      {CL.Types.val_loc = {loc_ghost = false; _} as locTo} );
+                      {Types.val_loc = {loc_ghost = false; _} as locTo} );
                 exp_type;
               };
           };
@@ -201,22 +201,22 @@ let rec collectExpr super self (e : CL.Typedtree.expression) =
               });
             #endif
         } )
-    when CL.Ident.name idArg = "arg"
-         && CL.Ident.name etaArg = "eta"
-         && CL.Path.name idArg2 = "arg" ->
+    when Ident.name idArg = "arg"
+         && Ident.name etaArg = "eta"
+         && Path.name idArg2 = "arg" ->
     args
     |> processOptionalArgs ~expType:exp_type
-         ~locFrom:(locFrom : CL.Location.t)
+         ~locFrom:(locFrom : Location.t)
          ~locTo ~path
   | Texp_field
-      (_, _, {lbl_loc = {CL.Location.loc_start = posTo; loc_ghost = false}; _})
+      (_, _, {lbl_loc = {Location.loc_start = posTo; loc_ghost = false}; _})
     ->
     if !Config.analyzeTypes then
       DeadType.addTypeReference ~posTo ~posFrom:locFrom.loc_start
   | Texp_construct
       ( _,
         {
-          cstr_loc = {CL.Location.loc_start = posTo; loc_ghost} as locTo;
+          cstr_loc = {Location.loc_start = posTo; loc_ghost} as locTo;
           cstr_tag;
         },
         _ ) ->
@@ -230,14 +230,14 @@ let rec collectExpr super self (e : CL.Typedtree.expression) =
     fields
     |> Array.iter (fun (_, record_label_definition) ->
            match record_label_definition with
-           | CL.Typedtree.Overridden (_, ({exp_loc} as e))
+           | Typedtree.Overridden (_, ({exp_loc} as e))
              when exp_loc.loc_ghost ->
              (* Punned field in OCaml projects has ghost location in expression *)
              let e = {e with exp_loc = {exp_loc with loc_ghost = false}} in
              collectExpr super self e |> ignore
            | _ -> ())
   | _ -> ());
-  super.CL.Tast_mapper.expr self e
+  super.Tast_mapper.expr self e
 
 (*
   type k. is a locally abstract type
@@ -252,17 +252,17 @@ let rec collectExpr super self (e : CL.Typedtree.expression) =
 let collectPattern :
     type k. _ -> _ -> k Compat.generalPattern -> k Compat.generalPattern =
  fun super self pat ->
-  let posFrom = pat.CL.Typedtree.pat_loc.loc_start in
+  let posFrom = pat.Typedtree.pat_loc.loc_start in
   (match pat.pat_desc with
-  | CL.Typedtree.Tpat_record (cases, _clodsedFlag) ->
+  | Typedtree.Tpat_record (cases, _clodsedFlag) ->
     cases
-    |> List.iter (fun (_loc, {CL.Types.lbl_loc = {loc_start = posTo}}, _pat) ->
+    |> List.iter (fun (_loc, {Types.lbl_loc = {loc_start = posTo}}, _pat) ->
            if !Config.analyzeTypes then
              DeadType.addTypeReference ~posFrom ~posTo)
   | _ -> ());
-  super.CL.Tast_mapper.pat self pat
+  super.Tast_mapper.pat self pat
 
-let rec getSignature (moduleType : CL.Types.module_type) =
+let rec getSignature (moduleType : Types.module_type) =
   match moduleType with
   | Mty_signature signature -> signature
   | Mty_functor _ -> (
@@ -272,7 +272,7 @@ let rec getSignature (moduleType : CL.Types.module_type) =
   | _ -> []
 
 let rec processSignatureItem ~doTypes ~doValues ~moduleLoc ~path
-    (si : CL.Types.signature_item) =
+    (si : Types.signature_item) =
   match si with
   | Sig_type _ when doTypes ->
     let id, t = si |> Compat.getSigType in
@@ -280,7 +280,7 @@ let rec processSignatureItem ~doTypes ~doValues ~moduleLoc ~path
       DeadType.addDeclaration ~typeId:id ~typeKind:t.type_kind
   | Sig_value _ when doValues ->
     let id, loc, kind, valType = si |> Compat.getSigValue in
-    if not loc.CL.Location.loc_ghost then
+    if not loc.Location.loc_ghost then
       let isPrimitive = match kind with Val_prim _ -> true | _ -> false in
       if (not isPrimitive) || !Config.analyzeExternals then
         let optionalArgs =
@@ -289,7 +289,7 @@ let rec processSignatureItem ~doTypes ~doValues ~moduleLoc ~path
 
         (* if Ident.name id = "someValue" then
            Printf.printf "XXX %s\n" (Ident.name id); *)
-        CL.Ident.name id
+        Ident.name id
         |> Name.create ~isInterface:false
         |> addValueDeclaration ~loc ~moduleLoc ~optionalArgs ~path
              ~sideEffects:false
@@ -301,17 +301,17 @@ let rec processSignatureItem ~doTypes ~doValues ~moduleLoc ~path
         getSignature moduleType
         |> List.iter
              (processSignatureItem ~doTypes ~doValues ~moduleLoc
-                ~path:((id |> CL.Ident.name |> Name.create) :: path))
+                ~path:((id |> Ident.name |> Name.create) :: path))
     | None -> ())
   | _ -> ()
 
 (* Traverse the AST *)
 let traverseStructure ~doTypes ~doExternals =
-  let super = CL.Tast_mapper.default in
+  let super = Tast_mapper.default in
   let expr self e = e |> collectExpr super self in
   let pat self p = p |> collectPattern super self in
   let value_binding self vb = vb |> collectValueBinding super self in
-  let structure_item self (structureItem : CL.Typedtree.structure_item) =
+  let structure_item self (structureItem : Typedtree.structure_item) =
     let oldModulePath = ModulePath.getCurrent () in
     (match structureItem.str_desc with
     | Tstr_module {mb_expr; mb_id; mb_loc} -> (
@@ -344,7 +344,7 @@ let traverseStructure ~doTypes ~doExternals =
         | Some {declKind = Value _} -> true
         | _ -> false
       in
-      let id = vd.val_id |> CL.Ident.name in
+      let id = vd.val_id |> Ident.name in
       Printf.printf "Primitive %s\n" id;
       if
         (not exists) && id <> "unsafe_expr"
@@ -357,7 +357,7 @@ let traverseStructure ~doTypes ~doExternals =
     | Tstr_type (_recFlag, typeDeclarations) when doTypes ->
       if !Config.analyzeTypes then
         typeDeclarations
-        |> List.iter (fun (typeDeclaration : CL.Typedtree.type_declaration) ->
+        |> List.iter (fun (typeDeclaration : Typedtree.type_declaration) ->
                DeadType.addDeclaration ~typeId:typeDeclaration.typ_id
                  ~typeKind:typeDeclaration.typ_type.type_kind)
     | Tstr_include {incl_mod; incl_type} -> (
@@ -378,7 +378,7 @@ let traverseStructure ~doTypes ~doExternals =
         let path =
           (ModulePath.getCurrent ()).path @ [!Common.currentModuleName]
         in
-        let name = id |> CL.Ident.name |> Name.create in
+        let name = id |> Ident.name |> Name.create in
         name |> DeadException.add ~path ~loc ~strLoc:structureItem.str_loc
       | None -> ())
     | _ -> ());
@@ -395,20 +395,20 @@ let processValueDependency
            {loc_start = {pos_fname = fnTo} as posTo; loc_ghost = ghost1} as
            locTo;
        } :
-        CL.Types.value_description),
+        Types.value_description),
       ({
          val_loc =
            {loc_start = {pos_fname = fnFrom} as posFrom; loc_ghost = ghost2} as
            locFrom;
        } :
-        CL.Types.value_description) ) =
+        Types.value_description) ) =
   if (not ghost1) && (not ghost2) && posTo <> posFrom then (
     let addFileReference = fileIsImplementationOf fnTo fnFrom in
     addValueReference ~addFileReference ~locFrom ~locTo;
     DeadOptionalArgs.addFunctionReference ~locFrom ~locTo)
 
 let processStructure ~cmt_value_dependencies ~doTypes ~doExternals
-    (structure : CL.Typedtree.structure) =
+    (structure : Typedtree.structure) =
   let traverseStructure = traverseStructure ~doTypes ~doExternals in
   structure |> traverseStructure.structure traverseStructure |> ignore;
   let valueDependencies = cmt_value_dependencies |> List.rev in
diff --git a/src/EmitJson.ml b/src/EmitJson.ml
index 9530cbc3..b84b57b0 100644
--- a/src/EmitJson.ml
+++ b/src/EmitJson.ml
@@ -19,7 +19,7 @@ let emitItem ~name ~kind ~file ~range ~message =
     endCharacter;
   fprintf ppf "  \"message\": \"%s\"" message
 
-let locToPos (loc : CL.Location.t) =
+let locToPos (loc : Location.t) =
   (loc.loc_start.pos_lnum - 1, loc.loc_start.pos_cnum - loc.loc_start.pos_bol)
 
 let emitAnnotate ~pos ~text ~action =
diff --git a/src/Exception.ml b/src/Exception.ml
index 9889d243..7ffb1a6d 100644
--- a/src/Exception.ml
+++ b/src/Exception.ml
@@ -69,7 +69,7 @@ module Event = struct
     | DoesNotRaise of t list (* DoesNotRaise(events) where events come from an expression *)
     | Raises  (** raise E *)
 
-  and t = {exceptions : Exceptions.t; kind : kind; loc : CL.Location.t}
+  and t = {exceptions : Exceptions.t; kind : kind; loc : Location.t}
 
   let rec print ppf event =
     match event with
@@ -168,8 +168,8 @@ end
 module Checks = struct
   type check = {
     events : Event.t list;
-    loc : CL.Location.t;
-    locFull : CL.Location.t;
+    loc : Location.t;
+    locFull : Location.t;
     moduleName : string;
     name : string;
     exceptions : Exceptions.t;
@@ -224,7 +224,7 @@ end
 
 let traverseAst () =
   ModulePath.init ();
-  let super = CL.Tast_mapper.default in
+  let super = Tast_mapper.default in
   let currentId = ref "" in
   let currentEvents = ref [] in
   let exceptionsOfPatterns patterns =
@@ -232,24 +232,24 @@ let traverseAst () =
     |> List.fold_left
          (fun acc desc ->
            match desc with
-           | CL.Typedtree.Tpat_construct _ ->
+           | Typedtree.Tpat_construct _ ->
              Exceptions.add (Exn.fromLid (Compat.unboxPatCstrTxt desc)) acc
            | _ -> acc)
          Exceptions.empty
   in
-  let iterExpr self e = self.CL.Tast_mapper.expr self e |> ignore in
+  let iterExpr self e = self.Tast_mapper.expr self e |> ignore in
   let iterExprOpt self eo =
     match eo with None -> () | Some e -> e |> iterExpr self
   in
-  let iterPat self p = self.CL.Tast_mapper.pat self p |> ignore in
+  let iterPat self p = self.Tast_mapper.pat self p |> ignore in
   let iterCases self cases =
     cases
     |> List.iter (fun case ->
-           case.CL.Typedtree.c_lhs |> iterPat self;
+           case.Typedtree.c_lhs |> iterPat self;
            case.c_guard |> iterExprOpt self;
            case.c_rhs |> iterExpr self)
   in
-  let isRaise : CL.Types.value_description -> bool = function
+  let isRaise : Types.value_description -> bool = function
     | {
         val_kind =
           Val_prim
@@ -262,19 +262,19 @@ let traverseAst () =
       true
     | _ -> false
   in
-  let isApply : CL.Types.value_description -> bool = function
+  let isApply : Types.value_description -> bool = function
     | {val_kind = Val_prim {prim_name = "%apply"}} -> true
     | _ -> false
   in
-  let isRevapply : CL.Types.value_description -> bool = function
+  let isRevapply : Types.value_description -> bool = function
     | {val_kind = Val_prim {prim_name = "%revapply"}} -> true
     | _ -> false
   in
   let raiseArgs args =
     match args with
-    | [(_, Some {CL.Typedtree.exp_desc = Texp_construct ({txt}, _, _)})] ->
+    | [(_, Some {Typedtree.exp_desc = Texp_construct ({txt}, _, _)})] ->
       [Exn.fromLid txt] |> Exceptions.fromList
-    | [(_, Some {CL.Typedtree.exp_desc = Texp_ident _})] ->
+    | [(_, Some {Typedtree.exp_desc = Texp_ident _})] ->
       [Exn.fromString "genericException"] |> Exceptions.fromList
     | _ -> [Exn.fromString "TODO_from_raise1"] |> Exceptions.fromList
   in
@@ -286,7 +286,7 @@ let traverseAst () =
            || s = "DoNoRaise" || s = "doNotraise")
     <> None
   in
-  let expr (self : CL.Tast_mapper.mapper) (expr : CL.Typedtree.expression) =
+  let expr (self : Tast_mapper.mapper) (expr : Typedtree.expression) =
     let loc = expr.exp_loc in
     let isDoesNoRaise = expr.exp_attributes |> doesNotRaise in
     let oldEvents = !currentEvents in
@@ -351,10 +351,11 @@ let traverseAst () =
             kind = Raises;
           }
           :: !currentEvents
-    | Texp_try (e, cases) ->
+    | Texp_try _ ->
+      let e, cases = expr.exp_desc |> Compat.getTexpTry in
       let exceptions =
         cases
-        |> List.map (fun case -> case.CL.Typedtree.c_lhs.pat_desc)
+        |> List.map (fun case -> case.Typedtree.c_lhs.pat_desc)
         |> exceptionsOfPatterns
       in
       let oldEvents = !currentEvents in
@@ -386,7 +387,7 @@ let traverseAst () =
       | Annotation.ConstructPayload s when s <> "::" ->
         [Exn.fromString s] |> Exceptions.fromList
       | Annotation.IdentPayload s ->
-        [Exn.fromString (s |> CL.Longident.flatten |> String.concat ".")]
+        [Exn.fromString (s |> Longident.flatten |> String.concat ".")]
         |> Exceptions.fromList
       | Annotation.TuplePayload tuple ->
         tuple
@@ -399,8 +400,8 @@ let traverseAst () =
     | None -> Exceptions.empty
     | Some payload -> payload |> getExceptions
   in
-  let toplevelEval (self : CL.Tast_mapper.mapper)
-      (expr : CL.Typedtree.expression) attributes =
+  let toplevelEval (self : Tast_mapper.mapper)
+      (expr : Typedtree.expression) attributes =
     let oldId = !currentId in
     let oldEvents = !currentEvents in
     let name = "Toplevel expression" in
@@ -414,8 +415,8 @@ let traverseAst () =
     currentId := oldId;
     currentEvents := oldEvents
   in
-  let structure_item (self : CL.Tast_mapper.mapper)
-      (structureItem : CL.Typedtree.structure_item) =
+  let structure_item (self : Tast_mapper.mapper)
+      (structureItem : Typedtree.structure_item) =
     let oldModulePath = ModulePath.getCurrent () in
     (match structureItem.str_desc with
     | Tstr_eval (expr, attributes) -> toplevelEval self expr attributes
@@ -438,8 +439,8 @@ let traverseAst () =
     | _ -> ());
     result
   in
-  let value_binding (self : CL.Tast_mapper.mapper)
-      (vb : CL.Typedtree.value_binding) =
+  let value_binding (self : Tast_mapper.mapper)
+      (vb : Typedtree.value_binding) =
     let oldId = !currentId in
     let oldEvents = !currentEvents in
     let isFunction =
@@ -476,7 +477,7 @@ let traverseAst () =
     | Tpat_construct _
       when isToplevel && (not vb.vb_loc.loc_ghost)
            && Compat.unboxPatCstrTxt vb.vb_pat.pat_desc
-              = CL.Longident.Lident "()" ->
+              = Longident.Lident "()" ->
       processBinding "()"
     #if OCAML_VERSION < (5, 2, 0)
     | Tpat_var (id, {loc = {loc_ghost}})
@@ -485,17 +486,17 @@ let traverseAst () =
     #endif
       when (isFunction || isToplevel) && (not loc_ghost)
            && not vb.vb_loc.loc_ghost ->
-      processBinding (id |> CL.Ident.name)
+      processBinding (id |> Ident.name)
     | _ -> super.value_binding self vb
   in
-  let open CL.Tast_mapper in
+  let open Tast_mapper in
   {super with expr; value_binding; structure_item}
 
-let processStructure (structure : CL.Typedtree.structure) =
+let processStructure (structure : Typedtree.structure) =
   let traverseAst = traverseAst () in
   structure |> traverseAst.structure traverseAst |> ignore
 
-let processCmt (cmt_infos : CL.Cmt_format.cmt_infos) =
+let processCmt (cmt_infos : Cmt_format.cmt_infos) =
   match cmt_infos.cmt_annots with
   | Interface _ -> ()
   | Implementation structure ->
diff --git a/src/Exceptions.ml b/src/Exceptions.ml
index 99a042b4..2a0b8011 100644
--- a/src/Exceptions.ml
+++ b/src/Exceptions.ml
@@ -31,7 +31,7 @@ let pp ~exnTable ppf exceptions =
       | Some locSet ->
         let positions =
           locSet |> Common.LocSet.elements
-          |> List.map (fun loc -> loc.CL.Location.loc_start)
+          |> List.map (fun loc -> loc.Location.loc_start)
         in
         Format.fprintf ppf "%s@{<info>%s@} (@{<filename>%s@})" separator name
           (positions |> List.map posToString |> String.concat " ")
diff --git a/src/Exn.ml b/src/Exn.ml
index 81d70b1c..ad5ef66e 100644
--- a/src/Exn.ml
+++ b/src/Exn.ml
@@ -12,7 +12,7 @@ let jsExnError = "Js.Exn.Error"
 let matchFailure = "Match_failure"
 let notFound = "Not_found"
 let sysError = "Sys_error"
-let fromLid lid = lid |> CL.Longident.flatten |> String.concat "."
+let fromLid lid = lid |> Longident.flatten |> String.concat "."
 let fromString s = s
 let toString s = s
 let yojsonJsonError = "Yojson.Json_error"
diff --git a/src/Exn.mli b/src/Exn.mli
index 2a577a52..ba5eee7f 100644
--- a/src/Exn.mli
+++ b/src/Exn.mli
@@ -7,7 +7,7 @@ val divisionByZero : t
 val endOfFile : t
 val exit : t
 val failure : t
-val fromLid : CL.Longident.t -> t
+val fromLid : Longident.t -> t
 val fromString : string -> t
 val invalidArgument : t
 val jsExnError : t
diff --git a/src/FindSourceFile.ml b/src/FindSourceFile.ml
index 41d211a3..42ef5c16 100644
--- a/src/FindSourceFile.ml
+++ b/src/FindSourceFile.ml
@@ -6,7 +6,7 @@ let nativeFilePath fname =
 
 let rec interface items =
   match items with
-  | {CL.Typedtree.sig_loc} :: rest -> (
+  | {Typedtree.sig_loc} :: rest -> (
     match
       not (Sys.file_exists (nativeFilePath sig_loc.loc_start.pos_fname))
     with
@@ -16,7 +16,7 @@ let rec interface items =
 
 let rec implementation items =
   match items with
-  | {CL.Typedtree.str_loc} :: rest -> (
+  | {Typedtree.str_loc} :: rest -> (
     match
       not (Sys.file_exists (nativeFilePath str_loc.loc_start.pos_fname))
     with
@@ -26,7 +26,7 @@ let rec implementation items =
 
 let cmt cmt_annots =
   match cmt_annots with
-  | CL.Cmt_format.Interface signature ->
+  | Cmt_format.Interface signature ->
     if !Common.Cli.debug && signature.sig_items = [] then
       Log_.item "Interface %d@." (signature.sig_items |> List.length);
     interface signature.sig_items
diff --git a/src/Il.ml b/src/Il.ml
index dd6acae0..f3db596b 100644
--- a/src/Il.ml
+++ b/src/Il.ml
@@ -11,7 +11,7 @@ module Kind = struct
       (Tuple (arr |> Array.to_list) |> toString) ^ " => " ^ (t |> toString)
 
   let extractDeclTypes typ =
-    let rec extract acc (typ : CL.Types.type_expr) =
+    let rec extract acc (typ : Types.type_expr) =
       match Compat.get_desc typ with
       | Tlink t -> t |> extract acc
       | Tsubst _ -> Compat.get_desc typ |> Compat.getTSubst |> extract acc
@@ -20,7 +20,7 @@ module Kind = struct
     in
     typ |> extract []
 
-  let rec fromType (typ : CL.Types.type_expr) =
+  let rec fromType (typ : Types.type_expr) =
     match Compat.get_desc typ with
     | Tlink t -> t |> fromType
     | Tsubst _ -> Compat.get_desc typ |> Compat.getTSubst |> fromType
diff --git a/src/Log_.ml b/src/Log_.ml
index 1ec39d09..33941d6e 100644
--- a/src/Log_.ml
+++ b/src/Log_.ml
@@ -56,12 +56,12 @@ module Color = struct
     Compat.pp_set_formatter_tag_functions Format.std_formatter color_functions;
     if not (get_color_enabled ()) then
     #if OCAML_VERSION < (5, 2, 0)
-      CL.Misc.Color.setup (Some Never);
+      Misc.Color.setup (Some Never);
     #else
       Misc.Style.setup (Some Never);
     #endif
     (* Print a dummy thing once in the beginning, as otherwise flushing does not work. *)
-    CL.Location.print_loc Format.str_formatter CL.Location.none
+    Location.print_loc Format.str_formatter Location.none
 
   let error ppf s = Format.fprintf ppf "@{<error>%s@}" s
 
@@ -69,7 +69,7 @@ module Color = struct
 end
 
 module Loc = struct
-  let print_loc ppf (loc : CL.Location.t) =
+  let print_loc ppf (loc : Location.t) =
     (* Change the range so it's on a single line.
        In this way, the line number is clickable in vscode. *)
     let startChar = loc.loc_start.pos_cnum - loc.loc_start.pos_bol in
@@ -88,14 +88,14 @@ module Loc = struct
           | false -> pos.pos_fname);
       }
     in
-    CL.Location.print_loc ppf
+    Location.print_loc ppf
       {
         loc with
         loc_start = loc.loc_start |> processPos startChar;
         loc_end = loc.loc_end |> processPos endChar;
       }
 
-  let print ppf (loc : CL.Location.t) =
+  let print ppf (loc : Location.t) =
     Format.fprintf ppf "@[%a@]" print_loc loc
 end
 
@@ -151,7 +151,7 @@ type kind = Warning | Error
 
 let first = ref true
 
-let logKind ~count ~kind ~(loc : CL.Location.t) ~name ~notClosed body =
+let logKind ~count ~kind ~(loc : Location.t) ~name ~notClosed body =
   if Suppress.filter loc.loc_start then (
     let open Format in
     first := false;
diff --git a/src/ModulePath.ml b/src/ModulePath.ml
index a27f86fe..1a8a816d 100644
--- a/src/ModulePath.ml
+++ b/src/ModulePath.ml
@@ -2,9 +2,9 @@ open Common
 module NameMap = Map.Make (Name)
 
 (* Keep track of the module path while traversing with Tast_mapper *)
-type t = {aliases : Path.t NameMap.t; loc : CL.Location.t; path : Path.t}
+type t = {aliases : Path.t NameMap.t; loc : Location.t; path : Path.t}
 
-let initial = ({aliases = NameMap.empty; loc = CL.Location.none; path = []} : t)
+let initial = ({aliases = NameMap.empty; loc = Location.none; path = []} : t)
 let current = (ref initial : t ref)
 let init () = current := initial
 
diff --git a/src/Noalloc.ml b/src/Noalloc.ml
index 314d52ab..1c1e089a 100644
--- a/src/Noalloc.ml
+++ b/src/Noalloc.ml
@@ -1,7 +1,7 @@
 let processCallee ~env ~funDef ~loc callee =
   match callee with
-  | CL.Path.Pident id -> (
-    let id = CL.Ident.name id in
+  | Path.Pident id -> (
+    let id = Ident.name id in
     match env |> Il.Env.find ~id with
     | Some (FunDef funDefCallee) ->
       funDef |> Il.FunDef.emit ~instr:(Il.Call funDefCallee.id)
@@ -10,7 +10,7 @@ let processCallee ~env ~funDef ~loc callee =
           Format.fprintf ppf "Callee not recognized: %s" id);
       assert false)
   | _ -> (
-    match callee |> CL.Path.name with
+    match callee |> Path.name with
     | "Pervasives.+" | "Stdlib.+" -> funDef |> Il.FunDef.emit ~instr:Il.I32Add
     | "Pervasives.+." | "Stdlib.+." -> funDef |> Il.FunDef.emit ~instr:Il.F64Add
     | "Pervasives.*." | "Stdlib.*." -> funDef |> Il.FunDef.emit ~instr:Il.F64Mul
@@ -19,7 +19,7 @@ let processCallee ~env ~funDef ~loc callee =
           Format.fprintf ppf "Callee not recognized: %s" name);
       assert false)
 
-let rec processTyp ~(funDef : Il.funDef) ~loc (typ : CL.Types.type_expr) =
+let rec processTyp ~(funDef : Il.funDef) ~loc (typ : Types.type_expr) =
   match Compat.get_desc typ with
   | Ttuple ts ->
     let scopes = ts |> List.map (processTyp ~funDef ~loc) in
@@ -36,12 +36,12 @@ let rec processTyp ~(funDef : Il.funDef) ~loc (typ : CL.Types.type_expr) =
         Format.fprintf ppf "Type not supported");
     assert false
 
-let rec sizeOfTyp ~loc (typ : CL.Types.type_expr) =
+let rec sizeOfTyp ~loc (typ : Types.type_expr) =
   match Compat.get_desc typ with
   | Tlink t -> t |> sizeOfTyp ~loc
   | Tsubst _ -> Compat.getTSubst (Compat.get_desc typ) |> sizeOfTyp ~loc
   | Tconstr (Pident id, [], _) -> (
-    match CL.Ident.name id with
+    match Ident.name id with
     | "int" -> 4
     | "string" -> 4
     | name ->
@@ -62,7 +62,7 @@ let rec emitLocalSetBackwards ~(funDef : Il.funDef) ~(scope : Il.scope) =
     let instr = Il.LocalSet offset in
     funDef |> Il.FunDef.emit ~instr
 
-let rec processFunDefPat ~funDef ~env ~mem (pat : CL.Typedtree.pattern) =
+let rec processFunDefPat ~funDef ~env ~mem (pat : Typedtree.pattern) =
   match pat.pat_desc with
   #if OCAML_VERSION < (5, 2, 0)
   | Tpat_var (id, _)
@@ -73,11 +73,11 @@ let rec processFunDefPat ~funDef ~env ~mem (pat : CL.Typedtree.pattern) =
   #endif
     let scope = pat.pat_type |> processTyp ~funDef ~loc:pat.pat_loc in
     let newEnv =
-      env |> Il.Env.add ~id:(id |> CL.Ident.name) ~def:(LocalScope scope)
+      env |> Il.Env.add ~id:(id |> Ident.name) ~def:(LocalScope scope)
     in
     (newEnv, scope)
   | Tpat_construct _
-    when Compat.unboxPatCstrTxt pat.pat_desc = CL.Longident.Lident "()" ->
+    when Compat.unboxPatCstrTxt pat.pat_desc = Longident.Lident "()" ->
     (env, Il.Tuple [])
   | Tpat_tuple pats ->
     let newEnv, scopes =
@@ -94,7 +94,7 @@ let rec processFunDefPat ~funDef ~env ~mem (pat : CL.Typedtree.pattern) =
         Format.fprintf ppf "Argument pattern not supported");
     assert false
 
-let rec processFunDef ~funDef ~env ~mem ~params (expr : CL.Typedtree.expression)
+let rec processFunDef ~funDef ~env ~mem ~params (expr : Typedtree.expression)
     =
   match expr.exp_desc with
   #if OCAML_VERSION < (5, 2, 0)
@@ -120,7 +120,7 @@ let rec processFunDef ~funDef ~env ~mem ~params (expr : CL.Typedtree.expression)
     funDef.numParams <- funDef.nextOffset;
     (env, expr, params)
 
-let translateConst ~loc ~mem (const : CL.Asttypes.constant) =
+let translateConst ~loc ~mem (const : Asttypes.constant) =
   match const with
   | Const_int n -> Il.I32 (n |> Int32.of_int)
   | Const_float s ->
@@ -140,11 +140,11 @@ let translateConst ~loc ~mem (const : CL.Asttypes.constant) =
         Format.fprintf ppf "Constant not supported");
     assert false
 
-let processConst ~funDef ~loc ~mem (const_ : CL.Asttypes.constant) =
+let processConst ~funDef ~loc ~mem (const_ : Asttypes.constant) =
   let const = const_ |> translateConst ~loc ~mem in
   funDef |> Il.FunDef.emit ~instr:(Il.Const const)
 
-let rec processLocalBinding ~env ~(pat : CL.Typedtree.pattern)
+let rec processLocalBinding ~env ~(pat : Typedtree.pattern)
     ~(scope : Il.scope) =
   match (pat.pat_desc, scope) with
   #if OCAML_VERSION < (5, 2, 0)
@@ -152,7 +152,7 @@ let rec processLocalBinding ~env ~(pat : CL.Typedtree.pattern)
   #else
   | Tpat_var (id, _, _), _ ->
   #endif
-    env |> Il.Env.add ~id:(id |> CL.Ident.name) ~def:(LocalScope scope)
+    env |> Il.Env.add ~id:(id |> Ident.name) ~def:(LocalScope scope)
   | Tpat_tuple pats, Tuple scopes ->
     let patsAndScopes = (List.combine pats scopes [@doesNotRaise]) in
     patsAndScopes
@@ -162,11 +162,11 @@ let rec processLocalBinding ~env ~(pat : CL.Typedtree.pattern)
   | Tpat_any, _ -> env
   | _ -> assert false
 
-and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
+and processExpr ~funDef ~env ~mem (expr : Typedtree.expression) =
   match expr.exp_desc with
   | Texp_constant const -> const |> processConst ~funDef ~loc:expr.exp_loc ~mem
   | Texp_ident (id, _, _) -> (
-    let id = CL.Path.name id in
+    let id = Path.name id in
     let rec emitScope (scope : Il.scope) =
       match scope with
       | Local offset -> funDef |> Il.FunDef.emit ~instr:(Il.LocalGet offset)
@@ -189,9 +189,9 @@ and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
       ({exp_desc = Texp_ident (callee, _, vd); exp_loc = callee_loc}, args) ->
     let kind = vd.val_type |> Il.Kind.fromType in
     args
-    |> List.iteri (fun i ((argLabel : CL.Asttypes.arg_label), argOpt) ->
+    |> List.iteri (fun i ((argLabel : Asttypes.arg_label), argOpt) ->
            match (argLabel, argOpt) with
-           | Nolabel, Some (arg : CL.Typedtree.expression) ->
+           | Nolabel, Some (arg : Typedtree.expression) ->
              (match kind with
              | Arrow (declKinds, _) ->
                let declKind = (declKinds.(i) [@doesNotRaise]) in
@@ -203,7 +203,7 @@ and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
                        "Function call to @{<info>%s@}: parameter %d has kind \
                         @{<info>%s@} but the supplied argument has kind \
                         @{<info>%s@}"
-                       (callee |> CL.Path.name) i
+                       (callee |> Path.name) i
                        (declKind |> Il.Kind.toString)
                        (argKind |> Il.Kind.toString))
              | _ -> assert false);
@@ -233,7 +233,7 @@ and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
   | Texp_record {fields; extended_expression = None} ->
     let firstIndex = ref 0 in
     fields
-    |> Array.iteri (fun i (_ld, (rld : CL.Typedtree.record_label_definition)) ->
+    |> Array.iteri (fun i (_ld, (rld : Typedtree.record_label_definition)) ->
            match rld with
            | Kept _ -> assert false
            | Overridden ({loc}, e) ->
@@ -248,7 +248,7 @@ and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
   | Texp_field (e, {loc}, {lbl_name; lbl_all}) ->
     let offset = ref 0 in
     lbl_all
-    |> Array.exists (fun (ld : CL.Types.label_description) ->
+    |> Array.exists (fun (ld : Types.label_description) ->
            if ld.lbl_name = lbl_name then true
            else
              let size = ld.lbl_arg |> sizeOfTyp ~loc in
@@ -264,13 +264,13 @@ and processExpr ~funDef ~env ~mem (expr : CL.Typedtree.expression) =
         Format.fprintf ppf "Expression not supported");
     assert false
 
-let rec processGlobal ~env ~id ~mem (expr : CL.Typedtree.expression) =
+let rec processGlobal ~env ~id ~mem (expr : Typedtree.expression) =
   match expr.exp_desc with
   | Texp_constant const_ ->
     let const = const_ |> translateConst ~loc:expr.exp_loc ~mem in
     Il.Init.Const const
   | Texp_ident (id1, _, _) -> (
-    let id1 = CL.Path.name id1 in
+    let id1 = Path.name id1 in
     match env |> Il.Env.find ~id:id1 with
     | Some (GlobalDef globalDef) -> globalDef.init
     | _ ->
@@ -287,8 +287,8 @@ let envRef = ref (Il.Env.create ())
 
 let memRef = ref (Il.Mem.create ())
 
-let processValueBinding ~id ~(expr : CL.Typedtree.expression) =
-  let id = CL.Ident.name id in
+let processValueBinding ~id ~(expr : Typedtree.expression) =
+  let id = Ident.name id in
   Log_.item "no-alloc binding for %s@." id;
   let kind = Il.Kind.fromType expr.exp_type in
   match kind with
@@ -300,7 +300,7 @@ let processValueBinding ~id ~(expr : CL.Typedtree.expression) =
     let init = expr |> processGlobal ~env:!envRef ~id ~mem:!memRef in
     envRef := !envRef |> Il.Env.add ~id ~def:(GlobalDef {id; init})
 
-let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
+let collectValueBinding super self (vb : Typedtree.value_binding) =
   (match vb.vb_pat.pat_desc with
   #if OCAML_VERSION < (5, 2, 0)
   | Tpat_var (id, _)
@@ -308,17 +308,17 @@ let collectValueBinding super self (vb : CL.Typedtree.value_binding) =
   | Tpat_var (id, _, _)
   #endif
     when vb.vb_attributes |> Annotation.hasAttribute (( = ) "noalloc") ->
-    processValueBinding ~id ~expr:vb.CL.Typedtree.vb_expr
+    processValueBinding ~id ~expr:vb.Typedtree.vb_expr
   | _ -> ());
-  let r = super.CL.Tast_mapper.value_binding self vb in
+  let r = super.Tast_mapper.value_binding self vb in
   r
 
 let traverseStructure =
-  let super = CL.Tast_mapper.default in
+  let super = Tast_mapper.default in
   let value_binding self vb = vb |> collectValueBinding super self in
   {super with value_binding}
 
-let processCmt (cmt_infos : CL.Cmt_format.cmt_infos) =
+let processCmt (cmt_infos : Cmt_format.cmt_infos) =
   match cmt_infos.cmt_annots with
   | Interface _ -> ()
   | Implementation structure ->
diff --git a/src/Reanalyze.ml b/src/Reanalyze.ml
index 5237a87e..bf12a950 100644
--- a/src/Reanalyze.ml
+++ b/src/Reanalyze.ml
@@ -1,7 +1,7 @@
 open Common
 
 let loadCmtFile cmtFilePath =
-  let cmt_infos = CL.Cmt_format.read_cmt cmtFilePath in
+  let cmt_infos = Cmt_format.read_cmt cmtFilePath in
   let excludePath sourceFile =
     !Cli.excludePaths
     |> List.exists (fun prefix_ ->
diff --git a/src/SideEffects.ml b/src/SideEffects.ml
index 947fc413..9dcfe0f9 100644
--- a/src/SideEffects.ml
+++ b/src/SideEffects.ml
@@ -21,7 +21,7 @@ let pathIsWhitelistedForSideEffects path =
   |> Common.Path.onOkPath ~whenContainsApply:false ~f:(fun s ->
          Hashtbl.mem (Lazy.force whiteTableSideEffects) s)
 
-let rec exprNoSideEffects (expr : CL.Typedtree.expression) =
+let rec exprNoSideEffects (expr : Typedtree.expression) =
   match expr.exp_desc with
   | Texp_ident _ | Texp_constant _ -> true
   | Texp_construct (_, _, el) -> el |> List.for_all exprNoSideEffects
@@ -33,7 +33,7 @@ let rec exprNoSideEffects (expr : CL.Typedtree.expression) =
   | Texp_sequence (e1, e2) -> e1 |> exprNoSideEffects && e2 |> exprNoSideEffects
   | Texp_let (_, vbs, e) ->
     vbs
-    |> List.for_all (fun (vb : CL.Typedtree.value_binding) ->
+    |> List.for_all (fun (vb : Typedtree.value_binding) ->
            vb.vb_expr |> exprNoSideEffects)
     && e |> exprNoSideEffects
   | Texp_record {fields; extended_expression} ->
@@ -46,7 +46,8 @@ let rec exprNoSideEffects (expr : CL.Typedtree.expression) =
     && cases |> List.for_all caseNoSideEffects
   | Texp_letmodule _ -> false
   | Texp_lazy e -> e |> exprNoSideEffects
-  | Texp_try (e, cases) ->
+  | Texp_try _ ->
+    let e, cases = expr.exp_desc |> Compat.getTexpTry in
     e |> exprNoSideEffects && cases |> List.for_all caseNoSideEffects
   | Texp_tuple el -> el |> List.for_all exprNoSideEffects
   | Texp_variant (_lbl, eo) -> eo |> exprOptNoSideEffects
@@ -75,7 +76,7 @@ let rec exprNoSideEffects (expr : CL.Typedtree.expression) =
 and exprOptNoSideEffects eo =
   match eo with None -> true | Some e -> e |> exprNoSideEffects
 
-and fieldNoSideEffects ((_ld, rld) : _ * CL.Typedtree.record_label_definition) =
+and fieldNoSideEffects ((_ld, rld) : _ * Typedtree.record_label_definition) =
   match rld with
 #if OCAML_VERSION >= (5, 0, 0)
   | Kept (_typeExpr, _mutable_flag) -> true
diff --git a/src/compiler-libs-406/ast_helper.ml b/src/compiler-libs-406/ast_helper.ml
deleted file mode 100644
index 365471e3..00000000
--- a/src/compiler-libs-406/ast_helper.ml
+++ /dev/null
@@ -1,560 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Helpers to produce Parsetree fragments *)
-
-open Asttypes
-open Parsetree
-open Docstrings
-
-type lid = Longident.t loc
-type str = string loc
-type loc = Location.t
-type attrs = attribute list
-
-let default_loc = ref Location.none
-
-let with_default_loc l f =
-  let old = !default_loc in
-  default_loc := l;
-  try let r = f () in default_loc := old; r
-  with exn -> default_loc := old; raise exn
-
-module Const = struct
-  let integer ?suffix i = Pconst_integer (i, suffix)
-  let int ?suffix i = integer ?suffix (string_of_int i)
-  let int32 ?(suffix='l') i = integer ~suffix (Int32.to_string i)
-  let int64 ?(suffix='L') i = integer ~suffix (Int64.to_string i)
-  let nativeint ?(suffix='n') i = integer ~suffix (Nativeint.to_string i)
-  let float ?suffix f = Pconst_float (f, suffix)
-  let char c = Pconst_char c
-  let string ?quotation_delimiter s = Pconst_string (s, quotation_delimiter)
-end
-
-module Typ = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {ptyp_desc = d; ptyp_loc = loc; ptyp_attributes = attrs}
-  let attr d a = {d with ptyp_attributes = d.ptyp_attributes @ [a]}
-
-  let any ?loc ?attrs () = mk ?loc ?attrs Ptyp_any
-  let var ?loc ?attrs a = mk ?loc ?attrs (Ptyp_var a)
-  let arrow ?loc ?attrs a b c = mk ?loc ?attrs (Ptyp_arrow (a, b, c))
-  let tuple ?loc ?attrs a = mk ?loc ?attrs (Ptyp_tuple a)
-  let constr ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_constr (a, b))
-  let object_ ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_object (a, b))
-  let class_ ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_class (a, b))
-  let alias ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_alias (a, b))
-  let variant ?loc ?attrs a b c = mk ?loc ?attrs (Ptyp_variant (a, b, c))
-  let poly ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_poly (a, b))
-  let package ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_package (a, b))
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Ptyp_extension a)
-
-  let force_poly t =
-    match t.ptyp_desc with
-    | Ptyp_poly _ -> t
-    | _ -> poly ~loc:t.ptyp_loc [] t (* -> ghost? *)
-
-  let varify_constructors var_names t =
-    let check_variable vl loc v =
-      if List.mem v vl then
-        raise Syntaxerr.(Error(Variable_in_scope(loc,v))) in
-    let var_names = List.map (fun v -> v.txt) var_names in
-    let rec loop t =
-      let desc =
-        match t.ptyp_desc with
-        | Ptyp_any -> Ptyp_any
-        | Ptyp_var x ->
-            check_variable var_names t.ptyp_loc x;
-            Ptyp_var x
-        | Ptyp_arrow (label,core_type,core_type') ->
-            Ptyp_arrow(label, loop core_type, loop core_type')
-        | Ptyp_tuple lst -> Ptyp_tuple (List.map loop lst)
-        | Ptyp_constr( { txt = Longident.Lident s }, [])
-          when List.mem s var_names ->
-            Ptyp_var s
-        | Ptyp_constr(longident, lst) ->
-            Ptyp_constr(longident, List.map loop lst)
-        | Ptyp_object (lst, o) ->
-            Ptyp_object (List.map loop_object_field lst, o)
-        | Ptyp_class (longident, lst) ->
-            Ptyp_class (longident, List.map loop lst)
-        | Ptyp_alias(core_type, string) ->
-            check_variable var_names t.ptyp_loc string;
-            Ptyp_alias(loop core_type, string)
-        | Ptyp_variant(row_field_list, flag, lbl_lst_option) ->
-            Ptyp_variant(List.map loop_row_field row_field_list,
-                         flag, lbl_lst_option)
-        | Ptyp_poly(string_lst, core_type) ->
-          List.iter (fun v ->
-            check_variable var_names t.ptyp_loc v.txt) string_lst;
-            Ptyp_poly(string_lst, loop core_type)
-        | Ptyp_package(longident,lst) ->
-            Ptyp_package(longident,List.map (fun (n,typ) -> (n,loop typ) ) lst)
-        | Ptyp_extension (s, arg) ->
-            Ptyp_extension (s, arg)
-      in
-      {t with ptyp_desc = desc}
-    and loop_row_field  =
-      function
-        | Rtag(label,attrs,flag,lst) ->
-            Rtag(label,attrs,flag,List.map loop lst)
-        | Rinherit t ->
-            Rinherit (loop t)
-    and loop_object_field =
-      function
-        | Otag(label, attrs, t) ->
-            Otag(label, attrs, loop t)
-        | Oinherit t ->
-            Oinherit (loop t)
-    in
-    loop t
-
-end
-
-module Pat = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {ppat_desc = d; ppat_loc = loc; ppat_attributes = attrs}
-  let attr d a = {d with ppat_attributes = d.ppat_attributes @ [a]}
-
-  let any ?loc ?attrs () = mk ?loc ?attrs Ppat_any
-  let var ?loc ?attrs a = mk ?loc ?attrs (Ppat_var a)
-  let alias ?loc ?attrs a b = mk ?loc ?attrs (Ppat_alias (a, b))
-  let constant ?loc ?attrs a = mk ?loc ?attrs (Ppat_constant a)
-  let interval ?loc ?attrs a b = mk ?loc ?attrs (Ppat_interval (a, b))
-  let tuple ?loc ?attrs a = mk ?loc ?attrs (Ppat_tuple a)
-  let construct ?loc ?attrs a b = mk ?loc ?attrs (Ppat_construct (a, b))
-  let variant ?loc ?attrs a b = mk ?loc ?attrs (Ppat_variant (a, b))
-  let record ?loc ?attrs a b = mk ?loc ?attrs (Ppat_record (a, b))
-  let array ?loc ?attrs a = mk ?loc ?attrs (Ppat_array a)
-  let or_ ?loc ?attrs a b = mk ?loc ?attrs (Ppat_or (a, b))
-  let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Ppat_constraint (a, b))
-  let type_ ?loc ?attrs a = mk ?loc ?attrs (Ppat_type a)
-  let lazy_ ?loc ?attrs a = mk ?loc ?attrs (Ppat_lazy a)
-  let unpack ?loc ?attrs a = mk ?loc ?attrs (Ppat_unpack a)
-  let open_ ?loc ?attrs a b = mk ?loc ?attrs (Ppat_open (a, b))
-  let exception_ ?loc ?attrs a = mk ?loc ?attrs (Ppat_exception a)
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Ppat_extension a)
-end
-
-module Exp = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {pexp_desc = d; pexp_loc = loc; pexp_attributes = attrs}
-  let attr d a = {d with pexp_attributes = d.pexp_attributes @ [a]}
-
-  let ident ?loc ?attrs a = mk ?loc ?attrs (Pexp_ident a)
-  let constant ?loc ?attrs a = mk ?loc ?attrs (Pexp_constant a)
-  let let_ ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_let (a, b, c))
-  let fun_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pexp_fun (a, b, c, d))
-  let function_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_function a)
-  let apply ?loc ?attrs a b = mk ?loc ?attrs (Pexp_apply (a, b))
-  let match_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_match (a, b))
-  let try_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_try (a, b))
-  let tuple ?loc ?attrs a = mk ?loc ?attrs (Pexp_tuple a)
-  let construct ?loc ?attrs a b = mk ?loc ?attrs (Pexp_construct (a, b))
-  let variant ?loc ?attrs a b = mk ?loc ?attrs (Pexp_variant (a, b))
-  let record ?loc ?attrs a b = mk ?loc ?attrs (Pexp_record (a, b))
-  let field ?loc ?attrs a b = mk ?loc ?attrs (Pexp_field (a, b))
-  let setfield ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_setfield (a, b, c))
-  let array ?loc ?attrs a = mk ?loc ?attrs (Pexp_array a)
-  let ifthenelse ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_ifthenelse (a, b, c))
-  let sequence ?loc ?attrs a b = mk ?loc ?attrs (Pexp_sequence (a, b))
-  let while_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_while (a, b))
-  let for_ ?loc ?attrs a b c d e = mk ?loc ?attrs (Pexp_for (a, b, c, d, e))
-  let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_constraint (a, b))
-  let coerce ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_coerce (a, b, c))
-  let send ?loc ?attrs a b = mk ?loc ?attrs (Pexp_send (a, b))
-  let new_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_new a)
-  let setinstvar ?loc ?attrs a b = mk ?loc ?attrs (Pexp_setinstvar (a, b))
-  let override ?loc ?attrs a = mk ?loc ?attrs (Pexp_override a)
-  let letmodule ?loc ?attrs a b c= mk ?loc ?attrs (Pexp_letmodule (a, b, c))
-  let letexception ?loc ?attrs a b = mk ?loc ?attrs (Pexp_letexception (a, b))
-  let assert_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_assert a)
-  let lazy_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_lazy a)
-  let poly ?loc ?attrs a b = mk ?loc ?attrs (Pexp_poly (a, b))
-  let object_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_object a)
-  let newtype ?loc ?attrs a b = mk ?loc ?attrs (Pexp_newtype (a, b))
-  let pack ?loc ?attrs a = mk ?loc ?attrs (Pexp_pack a)
-  let open_ ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_open (a, b, c))
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pexp_extension a)
-  let unreachable ?loc ?attrs () = mk ?loc ?attrs Pexp_unreachable
-
-  let case lhs ?guard rhs =
-    {
-     pc_lhs = lhs;
-     pc_guard = guard;
-     pc_rhs = rhs;
-    }
-end
-
-module Mty = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {pmty_desc = d; pmty_loc = loc; pmty_attributes = attrs}
-  let attr d a = {d with pmty_attributes = d.pmty_attributes @ [a]}
-
-  let ident ?loc ?attrs a = mk ?loc ?attrs (Pmty_ident a)
-  let alias ?loc ?attrs a = mk ?loc ?attrs (Pmty_alias a)
-  let signature ?loc ?attrs a = mk ?loc ?attrs (Pmty_signature a)
-  let functor_ ?loc ?attrs a b c = mk ?loc ?attrs (Pmty_functor (a, b, c))
-  let with_ ?loc ?attrs a b = mk ?loc ?attrs (Pmty_with (a, b))
-  let typeof_ ?loc ?attrs a = mk ?loc ?attrs (Pmty_typeof a)
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pmty_extension a)
-end
-
-module Mod = struct
-let mk ?(loc = !default_loc) ?(attrs = []) d =
-  {pmod_desc = d; pmod_loc = loc; pmod_attributes = attrs}
-  let attr d a = {d with pmod_attributes = d.pmod_attributes @ [a]}
-
-  let ident ?loc ?attrs x = mk ?loc ?attrs (Pmod_ident x)
-  let structure ?loc ?attrs x = mk ?loc ?attrs (Pmod_structure x)
-  let functor_ ?loc ?attrs arg arg_ty body =
-    mk ?loc ?attrs (Pmod_functor (arg, arg_ty, body))
-  let apply ?loc ?attrs m1 m2 = mk ?loc ?attrs (Pmod_apply (m1, m2))
-  let constraint_ ?loc ?attrs m mty = mk ?loc ?attrs (Pmod_constraint (m, mty))
-  let unpack ?loc ?attrs e = mk ?loc ?attrs (Pmod_unpack e)
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pmod_extension a)
-end
-
-module Sig = struct
-  let mk ?(loc = !default_loc) d = {psig_desc = d; psig_loc = loc}
-
-  let value ?loc a = mk ?loc (Psig_value a)
-  let type_ ?loc rec_flag a = mk ?loc (Psig_type (rec_flag, a))
-  let type_extension ?loc a = mk ?loc (Psig_typext a)
-  let exception_ ?loc a = mk ?loc (Psig_exception a)
-  let module_ ?loc a = mk ?loc (Psig_module a)
-  let rec_module ?loc a = mk ?loc (Psig_recmodule a)
-  let modtype ?loc a = mk ?loc (Psig_modtype a)
-  let open_ ?loc a = mk ?loc (Psig_open a)
-  let include_ ?loc a = mk ?loc (Psig_include a)
-  let class_ ?loc a = mk ?loc (Psig_class a)
-  let class_type ?loc a = mk ?loc (Psig_class_type a)
-  let extension ?loc ?(attrs = []) a = mk ?loc (Psig_extension (a, attrs))
-  let attribute ?loc a = mk ?loc (Psig_attribute a)
-  let text txt =
-    let f_txt = List.filter (fun ds -> docstring_body ds <> "") txt in
-    List.map
-      (fun ds -> attribute ~loc:(docstring_loc ds) (text_attr ds))
-      f_txt
-end
-
-module Str = struct
-  let mk ?(loc = !default_loc) d = {pstr_desc = d; pstr_loc = loc}
-
-  let eval ?loc ?(attrs = []) a = mk ?loc (Pstr_eval (a, attrs))
-  let value ?loc a b = mk ?loc (Pstr_value (a, b))
-  let primitive ?loc a = mk ?loc (Pstr_primitive a)
-  let type_ ?loc rec_flag a = mk ?loc (Pstr_type (rec_flag, a))
-  let type_extension ?loc a = mk ?loc (Pstr_typext a)
-  let exception_ ?loc a = mk ?loc (Pstr_exception a)
-  let module_ ?loc a = mk ?loc (Pstr_module a)
-  let rec_module ?loc a = mk ?loc (Pstr_recmodule a)
-  let modtype ?loc a = mk ?loc (Pstr_modtype a)
-  let open_ ?loc a = mk ?loc (Pstr_open a)
-  let class_type ?loc a = mk ?loc (Pstr_class_type a)
-  let include_ ?loc a = mk ?loc (Pstr_include a)
-  let extension ?loc ?(attrs = []) a = mk ?loc (Pstr_extension (a, attrs))
-  let attribute ?loc a = mk ?loc (Pstr_attribute a)
-  let text txt =
-    let f_txt = List.filter (fun ds -> docstring_body ds <> "") txt in
-    List.map
-      (fun ds -> attribute ~loc:(docstring_loc ds) (text_attr ds))
-      f_txt
-end
-
-module Cl = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {
-     pcl_desc = d;
-     pcl_loc = loc;
-     pcl_attributes = attrs;
-    }
-  let attr d a = {d with pcl_attributes = d.pcl_attributes @ [a]}
-
-  let constr ?loc ?attrs a b = mk ?loc ?attrs (Pcl_constr (a, b))
-  let structure ?loc ?attrs a = mk ?loc ?attrs (Pcl_structure a)
-  let fun_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pcl_fun (a, b, c, d))
-  let apply ?loc ?attrs a b = mk ?loc ?attrs (Pcl_apply (a, b))
-  let let_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcl_let (a, b, c))
-  let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pcl_constraint (a, b))
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pcl_extension a)
-  let open_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcl_open (a, b, c))
-end
-
-module Cty = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) d =
-    {
-     pcty_desc = d;
-     pcty_loc = loc;
-     pcty_attributes = attrs;
-    }
-  let attr d a = {d with pcty_attributes = d.pcty_attributes @ [a]}
-
-  let constr ?loc ?attrs a b = mk ?loc ?attrs (Pcty_constr (a, b))
-  let signature ?loc ?attrs a = mk ?loc ?attrs (Pcty_signature a)
-  let arrow ?loc ?attrs a b c = mk ?loc ?attrs (Pcty_arrow (a, b, c))
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pcty_extension a)
-  let open_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcty_open (a, b, c))
-end
-
-module Ctf = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-           ?(docs = empty_docs) d =
-    {
-     pctf_desc = d;
-     pctf_loc = loc;
-     pctf_attributes = add_docs_attrs docs attrs;
-    }
-
-  let inherit_ ?loc ?attrs a = mk ?loc ?attrs (Pctf_inherit a)
-  let val_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pctf_val (a, b, c, d))
-  let method_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pctf_method (a, b, c, d))
-  let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pctf_constraint (a, b))
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pctf_extension a)
-  let attribute ?loc a = mk ?loc (Pctf_attribute a)
-  let text txt =
-   let f_txt = List.filter (fun ds -> docstring_body ds <> "") txt in
-     List.map
-      (fun ds -> attribute ~loc:(docstring_loc ds) (text_attr ds))
-      f_txt
-
-  let attr d a = {d with pctf_attributes = d.pctf_attributes @ [a]}
-
-end
-
-module Cf = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) d =
-    {
-     pcf_desc = d;
-     pcf_loc = loc;
-     pcf_attributes = add_docs_attrs docs attrs;
-    }
-
-  
-  let val_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcf_val (a, b, c))
-  let method_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcf_method (a, b, c))
-  let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pcf_constraint (a, b))
-  let initializer_ ?loc ?attrs a = mk ?loc ?attrs (Pcf_initializer a)
-  let extension ?loc ?attrs a = mk ?loc ?attrs (Pcf_extension a)
-  let attribute ?loc a = mk ?loc (Pcf_attribute a)
-  let text txt =
-    let f_txt = List.filter (fun ds -> docstring_body ds <> "") txt in
-    List.map
-      (fun ds -> attribute ~loc:(docstring_loc ds) (text_attr ds))
-      f_txt
-
-  let virtual_ ct = Cfk_virtual ct
-  let concrete o e = Cfk_concrete (o, e)
-
-  let attr d a = {d with pcf_attributes = d.pcf_attributes @ [a]}
-
-end
-
-module Val = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) ?(docs = empty_docs)
-        ?(prim = []) name typ =
-    {
-     pval_name = name;
-     pval_type = typ;
-     pval_attributes = add_docs_attrs docs attrs;
-     pval_loc = loc;
-     pval_prim = prim;
-    }
-end
-
-module Md = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(text = []) name typ =
-    {
-     pmd_name = name;
-     pmd_type = typ;
-     pmd_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     pmd_loc = loc;
-    }
-end
-
-module Mtd = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(text = []) ?typ name =
-    {
-     pmtd_name = name;
-     pmtd_type = typ;
-     pmtd_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     pmtd_loc = loc;
-    }
-end
-
-module Mb = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(text = []) name expr =
-    {
-     pmb_name = name;
-     pmb_expr = expr;
-     pmb_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     pmb_loc = loc;
-    }
-end
-
-module Opn = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) ?(docs = empty_docs)
-        ?(override = Fresh) lid =
-    {
-     popen_lid = lid;
-     popen_override = override;
-     popen_loc = loc;
-     popen_attributes = add_docs_attrs docs attrs;
-    }
-end
-
-module Incl = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) ?(docs = empty_docs) mexpr =
-    {
-     pincl_mod = mexpr;
-     pincl_loc = loc;
-     pincl_attributes = add_docs_attrs docs attrs;
-    }
-
-end
-
-module Vb = struct
-  let mk ?(loc = !default_loc) ?(attrs = []) ?(docs = empty_docs)
-        ?(text = []) pat expr =
-    {
-     pvb_pat = pat;
-     pvb_expr = expr;
-     pvb_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     pvb_loc = loc;
-    }
-end
-
-module Ci = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(text = [])
-        ?(virt = Concrete) ?(params = []) name expr =
-    {
-     pci_virt = virt;
-     pci_params = params;
-     pci_name = name;
-     pci_expr = expr;
-     pci_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     pci_loc = loc;
-    }
-end
-
-module Type = struct
-  let mk ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(text = [])
-      ?(params = [])
-      ?(cstrs = [])
-      ?(kind = Ptype_abstract)
-      ?(priv = Public)
-      ?manifest
-      name =
-    {
-     ptype_name = name;
-     ptype_params = params;
-     ptype_cstrs = cstrs;
-     ptype_kind = kind;
-     ptype_private = priv;
-     ptype_manifest = manifest;
-     ptype_attributes =
-       add_text_attrs text (add_docs_attrs docs attrs);
-     ptype_loc = loc;
-    }
-
-  let constructor ?(loc = !default_loc) ?(attrs = []) ?(info = empty_info)
-        ?(args = Pcstr_tuple []) ?res name =
-    {
-     pcd_name = name;
-     pcd_args = args;
-     pcd_res = res;
-     pcd_loc = loc;
-     pcd_attributes = add_info_attrs info attrs;
-    }
-
-  let field ?(loc = !default_loc) ?(attrs = []) ?(info = empty_info)
-        ?(mut = Immutable) name typ =
-    {
-     pld_name = name;
-     pld_mutable = mut;
-     pld_type = typ;
-     pld_loc = loc;
-     pld_attributes = add_info_attrs info attrs;
-    }
-
-end
-
-(** Type extensions *)
-module Te = struct
-  let mk ?(attrs = []) ?(docs = empty_docs)
-        ?(params = []) ?(priv = Public) path constructors =
-    {
-     ptyext_path = path;
-     ptyext_params = params;
-     ptyext_constructors = constructors;
-     ptyext_private = priv;
-     ptyext_attributes = add_docs_attrs docs attrs;
-    }
-
-  let constructor ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(info = empty_info) name kind =
-    {
-     pext_name = name;
-     pext_kind = kind;
-     pext_loc = loc;
-     pext_attributes = add_docs_attrs docs (add_info_attrs info attrs);
-    }
-
-  let decl ?(loc = !default_loc) ?(attrs = []) ?(docs = empty_docs)
-             ?(info = empty_info) ?(args = Pcstr_tuple []) ?res name =
-    {
-     pext_name = name;
-     pext_kind = Pext_decl(args, res);
-     pext_loc = loc;
-     pext_attributes = add_docs_attrs docs (add_info_attrs info attrs);
-    }
-
-  let rebind ?(loc = !default_loc) ?(attrs = [])
-        ?(docs = empty_docs) ?(info = empty_info) name lid =
-    {
-     pext_name = name;
-     pext_kind = Pext_rebind lid;
-     pext_loc = loc;
-     pext_attributes = add_docs_attrs docs (add_info_attrs info attrs);
-    }
-
-end
-
-module Csig = struct
-  let mk self fields =
-    {
-     pcsig_self = self;
-     pcsig_fields = fields;
-    }
-end
-
-module Cstr = struct
-  let mk self fields =
-    {
-     pcstr_self = self;
-     pcstr_fields = fields;
-    }
-end
diff --git a/src/compiler-libs-406/ast_helper.mli b/src/compiler-libs-406/ast_helper.mli
deleted file mode 100644
index 455e225b..00000000
--- a/src/compiler-libs-406/ast_helper.mli
+++ /dev/null
@@ -1,439 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Helpers to produce Parsetree fragments *)
-
-open Asttypes
-open Docstrings
-open Parsetree
-
-type lid = Longident.t loc
-type str = string loc
-type loc = Location.t
-type attrs = attribute list
-
-(** {1 Default locations} *)
-
-val default_loc: loc ref
-    (** Default value for all optional location arguments. *)
-
-val with_default_loc: loc -> (unit -> 'a) -> 'a
-    (** Set the [default_loc] within the scope of the execution
-        of the provided function. *)
-
-(** {1 Constants} *)
-
-module Const : sig
-  val char : char -> constant
-  val string : ?quotation_delimiter:string -> string -> constant
-  val integer : ?suffix:char -> string -> constant
-  val int : ?suffix:char -> int -> constant
-  val int32 : ?suffix:char -> int32 -> constant
-  val int64 : ?suffix:char -> int64 -> constant
-  val nativeint : ?suffix:char -> nativeint -> constant
-  val float : ?suffix:char -> string -> constant
-end
-
-(** {1 Core language} *)
-
-(** Type expressions *)
-module Typ :
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> core_type_desc -> core_type
-    val attr: core_type -> attribute -> core_type
-
-    val any: ?loc:loc -> ?attrs:attrs -> unit -> core_type
-    val var: ?loc:loc -> ?attrs:attrs -> string -> core_type
-    val arrow: ?loc:loc -> ?attrs:attrs -> arg_label -> core_type -> core_type
-               -> core_type
-    val tuple: ?loc:loc -> ?attrs:attrs -> core_type list -> core_type
-    val constr: ?loc:loc -> ?attrs:attrs -> lid -> core_type list -> core_type
-    val object_: ?loc:loc -> ?attrs:attrs -> object_field list
-                   -> closed_flag -> core_type
-    val class_: ?loc:loc -> ?attrs:attrs -> lid -> core_type list -> core_type
-    val alias: ?loc:loc -> ?attrs:attrs -> core_type -> string -> core_type
-    val variant: ?loc:loc -> ?attrs:attrs -> row_field list -> closed_flag
-                 -> label list option -> core_type
-    val poly: ?loc:loc -> ?attrs:attrs -> str list -> core_type -> core_type
-    val package: ?loc:loc -> ?attrs:attrs -> lid -> (lid * core_type) list
-                 -> core_type
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> core_type
-
-    val force_poly: core_type -> core_type
-
-    val varify_constructors: str list -> core_type -> core_type
-    (** [varify_constructors newtypes te] is type expression [te], of which
-        any of nullary type constructor [tc] is replaced by type variable of
-        the same name, if [tc]'s name appears in [newtypes].
-        Raise [Syntaxerr.Variable_in_scope] if any type variable inside [te]
-        appears in [newtypes].
-        @since 4.05
-     *)
-  end
-
-(** Patterns *)
-module Pat:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> pattern_desc -> pattern
-    val attr:pattern -> attribute -> pattern
-
-    val any: ?loc:loc -> ?attrs:attrs -> unit -> pattern
-    val var: ?loc:loc -> ?attrs:attrs -> str -> pattern
-    val alias: ?loc:loc -> ?attrs:attrs -> pattern -> str -> pattern
-    val constant: ?loc:loc -> ?attrs:attrs -> constant -> pattern
-    val interval: ?loc:loc -> ?attrs:attrs -> constant -> constant -> pattern
-    val tuple: ?loc:loc -> ?attrs:attrs -> pattern list -> pattern
-    val construct: ?loc:loc -> ?attrs:attrs -> lid -> pattern option -> pattern
-    val variant: ?loc:loc -> ?attrs:attrs -> label -> pattern option -> pattern
-    val record: ?loc:loc -> ?attrs:attrs -> (lid * pattern) list -> closed_flag
-                -> pattern
-    val array: ?loc:loc -> ?attrs:attrs -> pattern list -> pattern
-    val or_: ?loc:loc -> ?attrs:attrs -> pattern -> pattern -> pattern
-    val constraint_: ?loc:loc -> ?attrs:attrs -> pattern -> core_type -> pattern
-    val type_: ?loc:loc -> ?attrs:attrs -> lid -> pattern
-    val lazy_: ?loc:loc -> ?attrs:attrs -> pattern -> pattern
-    val unpack: ?loc:loc -> ?attrs:attrs -> str -> pattern
-    val open_: ?loc:loc -> ?attrs:attrs  -> lid -> pattern -> pattern
-    val exception_: ?loc:loc -> ?attrs:attrs -> pattern -> pattern
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> pattern
-  end
-
-(** Expressions *)
-module Exp:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> expression_desc -> expression
-    val attr: expression -> attribute -> expression
-
-    val ident: ?loc:loc -> ?attrs:attrs -> lid -> expression
-    val constant: ?loc:loc -> ?attrs:attrs -> constant -> expression
-    val let_: ?loc:loc -> ?attrs:attrs -> rec_flag -> value_binding list
-              -> expression -> expression
-    val fun_: ?loc:loc -> ?attrs:attrs -> arg_label -> expression option
-              -> pattern -> expression -> expression
-    val function_: ?loc:loc -> ?attrs:attrs -> case list -> expression
-    val apply: ?loc:loc -> ?attrs:attrs -> expression
-               -> (arg_label * expression) list -> expression
-    val match_: ?loc:loc -> ?attrs:attrs -> expression -> case list
-                -> expression
-    val try_: ?loc:loc -> ?attrs:attrs -> expression -> case list -> expression
-    val tuple: ?loc:loc -> ?attrs:attrs -> expression list -> expression
-    val construct: ?loc:loc -> ?attrs:attrs -> lid -> expression option
-                   -> expression
-    val variant: ?loc:loc -> ?attrs:attrs -> label -> expression option
-                 -> expression
-    val record: ?loc:loc -> ?attrs:attrs -> (lid * expression) list
-                -> expression option -> expression
-    val field: ?loc:loc -> ?attrs:attrs -> expression -> lid -> expression
-    val setfield: ?loc:loc -> ?attrs:attrs -> expression -> lid -> expression
-                  -> expression
-    val array: ?loc:loc -> ?attrs:attrs -> expression list -> expression
-    val ifthenelse: ?loc:loc -> ?attrs:attrs -> expression -> expression
-                    -> expression option -> expression
-    val sequence: ?loc:loc -> ?attrs:attrs -> expression -> expression
-                  -> expression
-    val while_: ?loc:loc -> ?attrs:attrs -> expression -> expression
-                -> expression
-    val for_: ?loc:loc -> ?attrs:attrs -> pattern -> expression -> expression
-              -> direction_flag -> expression -> expression
-    val coerce: ?loc:loc -> ?attrs:attrs -> expression -> core_type option
-                -> core_type -> expression
-    val constraint_: ?loc:loc -> ?attrs:attrs -> expression -> core_type
-                     -> expression
-    val send: ?loc:loc -> ?attrs:attrs -> expression -> str -> expression
-    val new_: ?loc:loc -> ?attrs:attrs -> lid -> expression
-    val setinstvar: ?loc:loc -> ?attrs:attrs -> str -> expression -> expression
-    val override: ?loc:loc -> ?attrs:attrs -> (str * expression) list
-                  -> expression
-    val letmodule: ?loc:loc -> ?attrs:attrs -> str -> module_expr -> expression
-                   -> expression
-    val letexception:
-      ?loc:loc -> ?attrs:attrs -> extension_constructor -> expression
-      -> expression
-    val assert_: ?loc:loc -> ?attrs:attrs -> expression -> expression
-    val lazy_: ?loc:loc -> ?attrs:attrs -> expression -> expression
-    val poly: ?loc:loc -> ?attrs:attrs -> expression -> core_type option
-              -> expression
-    val object_: ?loc:loc -> ?attrs:attrs -> class_structure -> expression
-    val newtype: ?loc:loc -> ?attrs:attrs -> str -> expression -> expression
-    val pack: ?loc:loc -> ?attrs:attrs -> module_expr -> expression
-    val open_: ?loc:loc -> ?attrs:attrs -> override_flag -> lid -> expression
-               -> expression
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> expression
-    val unreachable: ?loc:loc -> ?attrs:attrs -> unit -> expression
-
-    val case: pattern -> ?guard:expression -> expression -> case
-  end
-
-(** Value declarations *)
-module Val:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs ->
-      ?prim:string list -> str -> core_type -> value_description
-  end
-
-(** Type declarations *)
-module Type:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      ?params:(core_type * variance) list ->
-      ?cstrs:(core_type * core_type * loc) list ->
-      ?kind:type_kind -> ?priv:private_flag -> ?manifest:core_type -> str ->
-      type_declaration
-
-    val constructor: ?loc:loc -> ?attrs:attrs -> ?info:info ->
-      ?args:constructor_arguments -> ?res:core_type -> str ->
-      constructor_declaration
-    val field: ?loc:loc -> ?attrs:attrs -> ?info:info ->
-      ?mut:mutable_flag -> str -> core_type -> label_declaration
-  end
-
-(** Type extensions *)
-module Te:
-  sig
-    val mk: ?attrs:attrs -> ?docs:docs ->
-      ?params:(core_type * variance) list -> ?priv:private_flag ->
-      lid -> extension_constructor list -> type_extension
-
-    val constructor: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?info:info ->
-      str -> extension_constructor_kind -> extension_constructor
-
-    val decl: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?info:info ->
-      ?args:constructor_arguments -> ?res:core_type -> str ->
-      extension_constructor
-    val rebind: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?info:info ->
-      str -> lid -> extension_constructor
-  end
-
-(** {1 Module language} *)
-
-(** Module type expressions *)
-module Mty:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> module_type_desc -> module_type
-    val attr: module_type -> attribute -> module_type
-
-    val ident: ?loc:loc -> ?attrs:attrs -> lid -> module_type
-    val alias: ?loc:loc -> ?attrs:attrs -> lid -> module_type
-    val signature: ?loc:loc -> ?attrs:attrs -> signature -> module_type
-    val functor_: ?loc:loc -> ?attrs:attrs ->
-      str -> module_type option -> module_type -> module_type
-    val with_: ?loc:loc -> ?attrs:attrs -> module_type ->
-      with_constraint list -> module_type
-    val typeof_: ?loc:loc -> ?attrs:attrs -> module_expr -> module_type
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> module_type
-  end
-
-(** Module expressions *)
-module Mod:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> module_expr_desc -> module_expr
-    val attr: module_expr -> attribute -> module_expr
-
-    val ident: ?loc:loc -> ?attrs:attrs -> lid -> module_expr
-    val structure: ?loc:loc -> ?attrs:attrs -> structure -> module_expr
-    val functor_: ?loc:loc -> ?attrs:attrs ->
-      str -> module_type option -> module_expr -> module_expr
-    val apply: ?loc:loc -> ?attrs:attrs -> module_expr -> module_expr ->
-      module_expr
-    val constraint_: ?loc:loc -> ?attrs:attrs -> module_expr -> module_type ->
-      module_expr
-    val unpack: ?loc:loc -> ?attrs:attrs -> expression -> module_expr
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> module_expr
-  end
-
-(** Signature items *)
-module Sig:
-  sig
-    val mk: ?loc:loc -> signature_item_desc -> signature_item
-
-    val value: ?loc:loc -> value_description -> signature_item
-    val type_: ?loc:loc -> rec_flag -> type_declaration list -> signature_item
-    val type_extension: ?loc:loc -> type_extension -> signature_item
-    val exception_: ?loc:loc -> extension_constructor -> signature_item
-    val module_: ?loc:loc -> module_declaration -> signature_item
-    val rec_module: ?loc:loc -> module_declaration list -> signature_item
-    val modtype: ?loc:loc -> module_type_declaration -> signature_item
-    val open_: ?loc:loc -> open_description -> signature_item
-    val include_: ?loc:loc -> include_description -> signature_item
-    val class_: ?loc:loc -> class_description list -> signature_item
-    val class_type: ?loc:loc -> class_type_declaration list -> signature_item
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> signature_item
-    val attribute: ?loc:loc -> attribute -> signature_item
-    val text: text -> signature_item list
-  end
-
-(** Structure items *)
-module Str:
-  sig
-    val mk: ?loc:loc -> structure_item_desc -> structure_item
-
-    val eval: ?loc:loc -> ?attrs:attributes -> expression -> structure_item
-    val value: ?loc:loc -> rec_flag -> value_binding list -> structure_item
-    val primitive: ?loc:loc -> value_description -> structure_item
-    val type_: ?loc:loc -> rec_flag -> type_declaration list -> structure_item
-    val type_extension: ?loc:loc -> type_extension -> structure_item
-    val exception_: ?loc:loc -> extension_constructor -> structure_item
-    val module_: ?loc:loc -> module_binding -> structure_item
-    val rec_module: ?loc:loc -> module_binding list -> structure_item
-    val modtype: ?loc:loc -> module_type_declaration -> structure_item
-    val open_: ?loc:loc -> open_description -> structure_item
-    val class_type: ?loc:loc -> class_type_declaration list -> structure_item
-    val include_: ?loc:loc -> include_declaration -> structure_item
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> structure_item
-    val attribute: ?loc:loc -> attribute -> structure_item
-    val text: text -> structure_item list
-  end
-
-(** Module declarations *)
-module Md:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      str -> module_type -> module_declaration
-  end
-
-(** Module type declarations *)
-module Mtd:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      ?typ:module_type -> str -> module_type_declaration
-  end
-
-(** Module bindings *)
-module Mb:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      str -> module_expr -> module_binding
-  end
-
-(** Opens *)
-module Opn:
-  sig
-    val mk: ?loc: loc -> ?attrs:attrs -> ?docs:docs ->
-      ?override:override_flag -> lid -> open_description
-  end
-
-(** Includes *)
-module Incl:
-  sig
-    val mk: ?loc: loc -> ?attrs:attrs -> ?docs:docs -> 'a -> 'a include_infos
-  end
-
-(** Value bindings *)
-module Vb:
-  sig
-    val mk: ?loc: loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      pattern -> expression -> value_binding
-  end
-
-
-(** {1 Class language} *)
-
-(** Class type expressions *)
-module Cty:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> class_type_desc -> class_type
-    val attr: class_type -> attribute -> class_type
-
-    val constr: ?loc:loc -> ?attrs:attrs -> lid -> core_type list -> class_type
-    val signature: ?loc:loc -> ?attrs:attrs -> class_signature -> class_type
-    val arrow: ?loc:loc -> ?attrs:attrs -> arg_label -> core_type ->
-      class_type -> class_type
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> class_type
-    val open_: ?loc:loc -> ?attrs:attrs -> override_flag -> lid -> class_type
-               -> class_type
-  end
-
-(** Class type fields *)
-module Ctf:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs ->
-      class_type_field_desc -> class_type_field
-    val attr: class_type_field -> attribute -> class_type_field
-
-    val inherit_: ?loc:loc -> ?attrs:attrs -> class_type -> class_type_field
-    val val_: ?loc:loc -> ?attrs:attrs -> str -> mutable_flag ->
-      virtual_flag -> core_type -> class_type_field
-    val method_: ?loc:loc -> ?attrs:attrs -> str -> private_flag ->
-      virtual_flag -> core_type -> class_type_field
-    val constraint_: ?loc:loc -> ?attrs:attrs -> core_type -> core_type ->
-      class_type_field
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> class_type_field
-    val attribute: ?loc:loc -> attribute -> class_type_field
-    val text: text -> class_type_field list
-  end
-
-(** Class expressions *)
-module Cl:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> class_expr_desc -> class_expr
-    val attr: class_expr -> attribute -> class_expr
-
-    val constr: ?loc:loc -> ?attrs:attrs -> lid -> core_type list -> class_expr
-    val structure: ?loc:loc -> ?attrs:attrs -> class_structure -> class_expr
-    val fun_: ?loc:loc -> ?attrs:attrs -> arg_label -> expression option ->
-      pattern -> class_expr -> class_expr
-    val apply: ?loc:loc -> ?attrs:attrs -> class_expr ->
-      (arg_label * expression) list -> class_expr
-    val let_: ?loc:loc -> ?attrs:attrs -> rec_flag -> value_binding list ->
-      class_expr -> class_expr
-    val constraint_: ?loc:loc -> ?attrs:attrs -> class_expr -> class_type ->
-      class_expr
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> class_expr
-    val open_: ?loc:loc -> ?attrs:attrs -> override_flag -> lid -> class_expr
-               -> class_expr
-  end
-
-(** Class fields *)
-module Cf:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> class_field_desc ->
-      class_field
-    val attr: class_field -> attribute -> class_field
-
-    val val_: ?loc:loc -> ?attrs:attrs -> str -> mutable_flag ->
-      class_field_kind -> class_field
-    val method_: ?loc:loc -> ?attrs:attrs -> str -> private_flag ->
-      class_field_kind -> class_field
-    val constraint_: ?loc:loc -> ?attrs:attrs -> core_type -> core_type ->
-      class_field
-    val initializer_: ?loc:loc -> ?attrs:attrs -> expression -> class_field
-    val extension: ?loc:loc -> ?attrs:attrs -> extension -> class_field
-    val attribute: ?loc:loc -> attribute -> class_field
-    val text: text -> class_field list
-
-    val virtual_: core_type -> class_field_kind
-    val concrete: override_flag -> expression -> class_field_kind
-
-  end
-
-(** Classes *)
-module Ci:
-  sig
-    val mk: ?loc:loc -> ?attrs:attrs -> ?docs:docs -> ?text:text ->
-      ?virt:virtual_flag -> ?params:(core_type * variance) list ->
-      str -> 'a -> 'a class_infos
-  end
-
-(** Class signatures *)
-module Csig:
-  sig
-    val mk: core_type -> class_type_field list -> class_signature
-  end
-
-(** Class structures *)
-module Cstr:
-  sig
-    val mk: pattern -> class_field list -> class_structure
-  end
diff --git a/src/compiler-libs-406/ast_mapper.ml b/src/compiler-libs-406/ast_mapper.ml
deleted file mode 100644
index 439717d3..00000000
--- a/src/compiler-libs-406/ast_mapper.ml
+++ /dev/null
@@ -1,918 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* A generic Parsetree mapping class *)
-
-(*
-[@@@ocaml.warning "+9"]
-  (* Ensure that record patterns don't miss any field. *)
-*)
-
-
-open Parsetree
-open Ast_helper
-open Location
-
-type mapper = {
-  attribute: mapper -> attribute -> attribute;
-  attributes: mapper -> attribute list -> attribute list;
-  case: mapper -> case -> case;
-  cases: mapper -> case list -> case list;
-  class_description: mapper -> class_description -> class_description;
-  class_expr: mapper -> class_expr -> class_expr;
-  class_field: mapper -> class_field -> class_field;
-  class_signature: mapper -> class_signature -> class_signature;
-  class_structure: mapper -> class_structure -> class_structure;
-  class_type: mapper -> class_type -> class_type;
-  class_type_declaration: mapper -> class_type_declaration
-                          -> class_type_declaration;
-  class_type_field: mapper -> class_type_field -> class_type_field;
-  constructor_declaration: mapper -> constructor_declaration
-                           -> constructor_declaration;
-  expr: mapper -> expression -> expression;
-  extension: mapper -> extension -> extension;
-  extension_constructor: mapper -> extension_constructor
-                         -> extension_constructor;
-  include_declaration: mapper -> include_declaration -> include_declaration;
-  include_description: mapper -> include_description -> include_description;
-  label_declaration: mapper -> label_declaration -> label_declaration;
-  location: mapper -> Location.t -> Location.t;
-  module_binding: mapper -> module_binding -> module_binding;
-  module_declaration: mapper -> module_declaration -> module_declaration;
-  module_expr: mapper -> module_expr -> module_expr;
-  module_type: mapper -> module_type -> module_type;
-  module_type_declaration: mapper -> module_type_declaration
-                           -> module_type_declaration;
-  open_description: mapper -> open_description -> open_description;
-  pat: mapper -> pattern -> pattern;
-  payload: mapper -> payload -> payload;
-  signature: mapper -> signature -> signature;
-  signature_item: mapper -> signature_item -> signature_item;
-  structure: mapper -> structure -> structure;
-  structure_item: mapper -> structure_item -> structure_item;
-  typ: mapper -> core_type -> core_type;
-  type_declaration: mapper -> type_declaration -> type_declaration;
-  type_extension: mapper -> type_extension -> type_extension;
-  type_kind: mapper -> type_kind -> type_kind;
-  value_binding: mapper -> value_binding -> value_binding;
-  value_description: mapper -> value_description -> value_description;
-  with_constraint: mapper -> with_constraint -> with_constraint;
-}
-
-let map_fst f (x, y) = (f x, y)
-let map_snd f (x, y) = (x, f y)
-let map_tuple f1 f2 (x, y) = (f1 x, f2 y)
-let map_tuple3 f1 f2 f3 (x, y, z) = (f1 x, f2 y, f3 z)
-let map_opt f = function None -> None | Some x -> Some (f x)
-
-let map_loc sub {loc; txt} = {loc = sub.location sub loc; txt}
-
-module T = struct
-  (* Type expressions for the core language *)
-
-  let row_field sub = function
-    | Rtag (l, attrs, b, tl) ->
-        Rtag (map_loc sub l, sub.attributes sub attrs,
-              b, List.map (sub.typ sub) tl)
-    | Rinherit t -> Rinherit (sub.typ sub t)
-
-  let object_field sub = function
-    | Otag (l, attrs, t) ->
-        Otag (map_loc sub l, sub.attributes sub attrs, sub.typ sub t)
-    | Oinherit t -> Oinherit (sub.typ sub t)
-
-  let map sub {ptyp_desc = desc; ptyp_loc = loc; ptyp_attributes = attrs} =
-    let open Typ in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Ptyp_any -> any ~loc ~attrs ()
-    | Ptyp_var s -> var ~loc ~attrs s
-    | Ptyp_arrow (lab, t1, t2) ->
-        arrow ~loc ~attrs lab (sub.typ sub t1) (sub.typ sub t2)
-    | Ptyp_tuple tyl -> tuple ~loc ~attrs (List.map (sub.typ sub) tyl)
-    | Ptyp_constr (lid, tl) ->
-        constr ~loc ~attrs (map_loc sub lid) (List.map (sub.typ sub) tl)
-    | Ptyp_object (l, o) ->
-        object_ ~loc ~attrs (List.map (object_field sub) l) o
-    | Ptyp_class (lid, tl) ->
-        class_ ~loc ~attrs (map_loc sub lid) (List.map (sub.typ sub) tl)
-    | Ptyp_alias (t, s) -> alias ~loc ~attrs (sub.typ sub t) s
-    | Ptyp_variant (rl, b, ll) ->
-        variant ~loc ~attrs (List.map (row_field sub) rl) b ll
-    | Ptyp_poly (sl, t) -> poly ~loc ~attrs
-                             (List.map (map_loc sub) sl) (sub.typ sub t)
-    | Ptyp_package (lid, l) ->
-        package ~loc ~attrs (map_loc sub lid)
-          (List.map (map_tuple (map_loc sub) (sub.typ sub)) l)
-    | Ptyp_extension x -> extension ~loc ~attrs (sub.extension sub x)
-
-  let map_type_declaration sub
-      {ptype_name; ptype_params; ptype_cstrs;
-       ptype_kind;
-       ptype_private;
-       ptype_manifest;
-       ptype_attributes;
-       ptype_loc} =
-    Type.mk (map_loc sub ptype_name)
-      ~params:(List.map (map_fst (sub.typ sub)) ptype_params)
-      ~priv:ptype_private
-      ~cstrs:(List.map
-                (map_tuple3 (sub.typ sub) (sub.typ sub) (sub.location sub))
-                ptype_cstrs)
-      ~kind:(sub.type_kind sub ptype_kind)
-      ?manifest:(map_opt (sub.typ sub) ptype_manifest)
-      ~loc:(sub.location sub ptype_loc)
-      ~attrs:(sub.attributes sub ptype_attributes)
-
-  let map_type_kind sub = function
-    | Ptype_abstract -> Ptype_abstract
-    | Ptype_variant l ->
-        Ptype_variant (List.map (sub.constructor_declaration sub) l)
-    | Ptype_record l -> Ptype_record (List.map (sub.label_declaration sub) l)
-    | Ptype_open -> Ptype_open
-
-  let map_constructor_arguments sub = function
-    | Pcstr_tuple l -> Pcstr_tuple (List.map (sub.typ sub) l)
-    | Pcstr_record l ->
-        Pcstr_record (List.map (sub.label_declaration sub) l)
-
-  let map_type_extension sub
-      {ptyext_path; ptyext_params;
-       ptyext_constructors;
-       ptyext_private;
-       ptyext_attributes} =
-    Te.mk
-      (map_loc sub ptyext_path)
-      (List.map (sub.extension_constructor sub) ptyext_constructors)
-      ~params:(List.map (map_fst (sub.typ sub)) ptyext_params)
-      ~priv:ptyext_private
-      ~attrs:(sub.attributes sub ptyext_attributes)
-
-  let map_extension_constructor_kind sub = function
-      Pext_decl(ctl, cto) ->
-        Pext_decl(map_constructor_arguments sub ctl, map_opt (sub.typ sub) cto)
-    | Pext_rebind li ->
-        Pext_rebind (map_loc sub li)
-
-  let map_extension_constructor sub
-      {pext_name;
-       pext_kind;
-       pext_loc;
-       pext_attributes} =
-    Te.constructor
-      (map_loc sub pext_name)
-      (map_extension_constructor_kind sub pext_kind)
-      ~loc:(sub.location sub pext_loc)
-      ~attrs:(sub.attributes sub pext_attributes)
-
-end
-
-module CT = struct
-  (* Type expressions for the class language *)
-
-  let map sub {pcty_loc = loc; pcty_desc = desc; pcty_attributes = attrs} =
-    let open Cty in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pcty_constr (lid, tys) ->
-        constr ~loc ~attrs (map_loc sub lid) (List.map (sub.typ sub) tys)
-    | Pcty_signature x -> signature ~loc ~attrs (sub.class_signature sub x)
-    | Pcty_arrow (lab, t, ct) ->
-        arrow ~loc ~attrs lab (sub.typ sub t) (sub.class_type sub ct)
-    | Pcty_extension x -> extension ~loc ~attrs (sub.extension sub x)
-    | Pcty_open (ovf, lid, ct) ->
-        open_ ~loc ~attrs ovf (map_loc sub lid) (sub.class_type sub ct)
-
-  let map_field sub {pctf_desc = desc; pctf_loc = loc; pctf_attributes = attrs}
-    =
-    let open Ctf in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pctf_inherit ct -> inherit_ ~loc ~attrs (sub.class_type sub ct)
-    | Pctf_val (s, m, v, t) ->
-        val_ ~loc ~attrs (map_loc sub s) m v (sub.typ sub t)
-    | Pctf_method (s, p, v, t) ->
-        method_ ~loc ~attrs (map_loc sub s) p v (sub.typ sub t)
-    | Pctf_constraint (t1, t2) ->
-        constraint_ ~loc ~attrs (sub.typ sub t1) (sub.typ sub t2)
-    | Pctf_attribute x -> attribute ~loc (sub.attribute sub x)
-    | Pctf_extension x -> extension ~loc ~attrs (sub.extension sub x)
-
-  let map_signature sub {pcsig_self; pcsig_fields} =
-    Csig.mk
-      (sub.typ sub pcsig_self)
-      (List.map (sub.class_type_field sub) pcsig_fields)
-end
-
-module MT = struct
-  (* Type expressions for the module language *)
-
-  let map sub {pmty_desc = desc; pmty_loc = loc; pmty_attributes = attrs} =
-    let open Mty in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pmty_ident s -> ident ~loc ~attrs (map_loc sub s)
-    | Pmty_alias s -> alias ~loc ~attrs (map_loc sub s)
-    | Pmty_signature sg -> signature ~loc ~attrs (sub.signature sub sg)
-    | Pmty_functor (s, mt1, mt2) ->
-        functor_ ~loc ~attrs (map_loc sub s)
-          (Misc.may_map (sub.module_type sub) mt1)
-          (sub.module_type sub mt2)
-    | Pmty_with (mt, l) ->
-        with_ ~loc ~attrs (sub.module_type sub mt)
-          (List.map (sub.with_constraint sub) l)
-    | Pmty_typeof me -> typeof_ ~loc ~attrs (sub.module_expr sub me)
-    | Pmty_extension x -> extension ~loc ~attrs (sub.extension sub x)
-
-  let map_with_constraint sub = function
-    | Pwith_type (lid, d) ->
-        Pwith_type (map_loc sub lid, sub.type_declaration sub d)
-    | Pwith_module (lid, lid2) ->
-        Pwith_module (map_loc sub lid, map_loc sub lid2)
-    | Pwith_typesubst (lid, d) ->
-        Pwith_typesubst (map_loc sub lid, sub.type_declaration sub d)
-    | Pwith_modsubst (s, lid) ->
-        Pwith_modsubst (map_loc sub s, map_loc sub lid)
-
-  let map_signature_item sub {psig_desc = desc; psig_loc = loc} =
-    let open Sig in
-    let loc = sub.location sub loc in
-    match desc with
-    | Psig_value vd -> value ~loc (sub.value_description sub vd)
-    | Psig_type (rf, l) -> type_ ~loc rf (List.map (sub.type_declaration sub) l)
-    | Psig_typext te -> type_extension ~loc (sub.type_extension sub te)
-    | Psig_exception ed -> exception_ ~loc (sub.extension_constructor sub ed)
-    | Psig_module x -> module_ ~loc (sub.module_declaration sub x)
-    | Psig_recmodule l ->
-        rec_module ~loc (List.map (sub.module_declaration sub) l)
-    | Psig_modtype x -> modtype ~loc (sub.module_type_declaration sub x)
-    | Psig_open x -> open_ ~loc (sub.open_description sub x)
-    | Psig_include x -> include_ ~loc (sub.include_description sub x)
-    | Psig_class l -> class_ ~loc (List.map (sub.class_description sub) l)
-    | Psig_class_type l ->
-        class_type ~loc (List.map (sub.class_type_declaration sub) l)
-    | Psig_extension (x, attrs) ->
-        extension ~loc (sub.extension sub x) ~attrs:(sub.attributes sub attrs)
-    | Psig_attribute x -> attribute ~loc (sub.attribute sub x)
-end
-
-
-module M = struct
-  (* Value expressions for the module language *)
-
-  let map sub {pmod_loc = loc; pmod_desc = desc; pmod_attributes = attrs} =
-    let open Mod in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pmod_ident x -> ident ~loc ~attrs (map_loc sub x)
-    | Pmod_structure str -> structure ~loc ~attrs (sub.structure sub str)
-    | Pmod_functor (arg, arg_ty, body) ->
-        functor_ ~loc ~attrs (map_loc sub arg)
-          (Misc.may_map (sub.module_type sub) arg_ty)
-          (sub.module_expr sub body)
-    | Pmod_apply (m1, m2) ->
-        apply ~loc ~attrs (sub.module_expr sub m1) (sub.module_expr sub m2)
-    | Pmod_constraint (m, mty) ->
-        constraint_ ~loc ~attrs (sub.module_expr sub m)
-                    (sub.module_type sub mty)
-    | Pmod_unpack e -> unpack ~loc ~attrs (sub.expr sub e)
-    | Pmod_extension x -> extension ~loc ~attrs (sub.extension sub x)
-
-  let map_structure_item sub {pstr_loc = loc; pstr_desc = desc} =
-    let open Str in
-    let loc = sub.location sub loc in
-    match desc with
-    | Pstr_eval (x, attrs) ->
-        eval ~loc ~attrs:(sub.attributes sub attrs) (sub.expr sub x)
-    | Pstr_value (r, vbs) -> value ~loc r (List.map (sub.value_binding sub) vbs)
-    | Pstr_primitive vd -> primitive ~loc (sub.value_description sub vd)
-    | Pstr_type (rf, l) -> type_ ~loc rf (List.map (sub.type_declaration sub) l)
-    | Pstr_typext te -> type_extension ~loc (sub.type_extension sub te)
-    | Pstr_exception ed -> exception_ ~loc (sub.extension_constructor sub ed)
-    | Pstr_module x -> module_ ~loc (sub.module_binding sub x)
-    | Pstr_recmodule l -> rec_module ~loc (List.map (sub.module_binding sub) l)
-    | Pstr_modtype x -> modtype ~loc (sub.module_type_declaration sub x)
-    | Pstr_open x -> open_ ~loc (sub.open_description sub x)
-    | Pstr_class () -> {pstr_loc = loc ; pstr_desc = Pstr_class ()}
-    | Pstr_class_type l ->
-        class_type ~loc (List.map (sub.class_type_declaration sub) l)
-    | Pstr_include x -> include_ ~loc (sub.include_declaration sub x)
-    | Pstr_extension (x, attrs) ->
-        extension ~loc (sub.extension sub x) ~attrs:(sub.attributes sub attrs)
-    | Pstr_attribute x -> attribute ~loc (sub.attribute sub x)
-end
-
-module E = struct
-  (* Value expressions for the core language *)
-
-  let map sub {pexp_loc = loc; pexp_desc = desc; pexp_attributes = attrs} =
-    let open Exp in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pexp_ident x -> ident ~loc ~attrs (map_loc sub x)
-    | Pexp_constant x -> constant ~loc ~attrs x
-    | Pexp_let (r, vbs, e) ->
-        let_ ~loc ~attrs r (List.map (sub.value_binding sub) vbs)
-          (sub.expr sub e)
-    | Pexp_fun (lab, def, p, e) ->
-        fun_ ~loc ~attrs lab (map_opt (sub.expr sub) def) (sub.pat sub p)
-          (sub.expr sub e)
-    | Pexp_function pel -> function_ ~loc ~attrs (sub.cases sub pel)
-    | Pexp_apply (e, l) ->
-        apply ~loc ~attrs (sub.expr sub e) (List.map (map_snd (sub.expr sub)) l)
-    | Pexp_match (e, pel) ->
-        match_ ~loc ~attrs (sub.expr sub e) (sub.cases sub pel)
-    | Pexp_try (e, pel) -> try_ ~loc ~attrs (sub.expr sub e) (sub.cases sub pel)
-    | Pexp_tuple el -> tuple ~loc ~attrs (List.map (sub.expr sub) el)
-    | Pexp_construct (lid, arg) ->
-        construct ~loc ~attrs (map_loc sub lid) (map_opt (sub.expr sub) arg)
-    | Pexp_variant (lab, eo) ->
-        variant ~loc ~attrs lab (map_opt (sub.expr sub) eo)
-    | Pexp_record (l, eo) ->
-        record ~loc ~attrs (List.map (map_tuple (map_loc sub) (sub.expr sub)) l)
-          (map_opt (sub.expr sub) eo)
-    | Pexp_field (e, lid) ->
-        field ~loc ~attrs (sub.expr sub e) (map_loc sub lid)
-    | Pexp_setfield (e1, lid, e2) ->
-        setfield ~loc ~attrs (sub.expr sub e1) (map_loc sub lid)
-          (sub.expr sub e2)
-    | Pexp_array el -> array ~loc ~attrs (List.map (sub.expr sub) el)
-    | Pexp_ifthenelse (e1, e2, e3) ->
-        ifthenelse ~loc ~attrs (sub.expr sub e1) (sub.expr sub e2)
-          (map_opt (sub.expr sub) e3)
-    | Pexp_sequence (e1, e2) ->
-        sequence ~loc ~attrs (sub.expr sub e1) (sub.expr sub e2)
-    | Pexp_while (e1, e2) ->
-        while_ ~loc ~attrs (sub.expr sub e1) (sub.expr sub e2)
-    | Pexp_for (p, e1, e2, d, e3) ->
-        for_ ~loc ~attrs (sub.pat sub p) (sub.expr sub e1) (sub.expr sub e2) d
-          (sub.expr sub e3)
-    | Pexp_coerce (e, t1, t2) ->
-        coerce ~loc ~attrs (sub.expr sub e) (map_opt (sub.typ sub) t1)
-          (sub.typ sub t2)
-    | Pexp_constraint (e, t) ->
-        constraint_ ~loc ~attrs (sub.expr sub e) (sub.typ sub t)
-    | Pexp_send (e, s) ->
-        send ~loc ~attrs (sub.expr sub e) (map_loc sub s)
-    | Pexp_new lid -> new_ ~loc ~attrs (map_loc sub lid)
-    | Pexp_setinstvar (s, e) ->
-        setinstvar ~loc ~attrs (map_loc sub s) (sub.expr sub e)
-    | Pexp_override sel ->
-        override ~loc ~attrs
-          (List.map (map_tuple (map_loc sub) (sub.expr sub)) sel)
-    | Pexp_letmodule (s, me, e) ->
-        letmodule ~loc ~attrs (map_loc sub s) (sub.module_expr sub me)
-          (sub.expr sub e)
-    | Pexp_letexception (cd, e) ->
-        letexception ~loc ~attrs
-          (sub.extension_constructor sub cd)
-          (sub.expr sub e)
-    | Pexp_assert e -> assert_ ~loc ~attrs (sub.expr sub e)
-    | Pexp_lazy e -> lazy_ ~loc ~attrs (sub.expr sub e)
-    | Pexp_poly (e, t) ->
-        poly ~loc ~attrs (sub.expr sub e) (map_opt (sub.typ sub) t)
-    | Pexp_object cls -> object_ ~loc ~attrs (sub.class_structure sub cls)
-    | Pexp_newtype (s, e) ->
-        newtype ~loc ~attrs (map_loc sub s) (sub.expr sub e)
-    | Pexp_pack me -> pack ~loc ~attrs (sub.module_expr sub me)
-    | Pexp_open (ovf, lid, e) ->
-        open_ ~loc ~attrs ovf (map_loc sub lid) (sub.expr sub e)
-    | Pexp_extension x -> extension ~loc ~attrs (sub.extension sub x)
-    | Pexp_unreachable -> unreachable ~loc ~attrs ()
-end
-
-module P = struct
-  (* Patterns *)
-
-  let map sub {ppat_desc = desc; ppat_loc = loc; ppat_attributes = attrs} =
-    let open Pat in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Ppat_any -> any ~loc ~attrs ()
-    | Ppat_var s -> var ~loc ~attrs (map_loc sub s)
-    | Ppat_alias (p, s) -> alias ~loc ~attrs (sub.pat sub p) (map_loc sub s)
-    | Ppat_constant c -> constant ~loc ~attrs c
-    | Ppat_interval (c1, c2) -> interval ~loc ~attrs c1 c2
-    | Ppat_tuple pl -> tuple ~loc ~attrs (List.map (sub.pat sub) pl)
-    | Ppat_construct (l, p) ->
-        construct ~loc ~attrs (map_loc sub l) (map_opt (sub.pat sub) p)
-    | Ppat_variant (l, p) -> variant ~loc ~attrs l (map_opt (sub.pat sub) p)
-    | Ppat_record (lpl, cf) ->
-        record ~loc ~attrs
-               (List.map (map_tuple (map_loc sub) (sub.pat sub)) lpl) cf
-    | Ppat_array pl -> array ~loc ~attrs (List.map (sub.pat sub) pl)
-    | Ppat_or (p1, p2) -> or_ ~loc ~attrs (sub.pat sub p1) (sub.pat sub p2)
-    | Ppat_constraint (p, t) ->
-        constraint_ ~loc ~attrs (sub.pat sub p) (sub.typ sub t)
-    | Ppat_type s -> type_ ~loc ~attrs (map_loc sub s)
-    | Ppat_lazy p -> lazy_ ~loc ~attrs (sub.pat sub p)
-    | Ppat_unpack s -> unpack ~loc ~attrs (map_loc sub s)
-    | Ppat_open (lid,p) -> open_ ~loc ~attrs (map_loc sub lid) (sub.pat sub p)
-    | Ppat_exception p -> exception_ ~loc ~attrs (sub.pat sub p)
-    | Ppat_extension x -> extension ~loc ~attrs (sub.extension sub x)
-end
-
-module CE = struct
-  (* Value expressions for the class language *)
-
-  let map sub {pcl_loc = loc; pcl_desc = desc; pcl_attributes = attrs} =
-    let open Cl in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pcl_constr (lid, tys) ->
-        constr ~loc ~attrs (map_loc sub lid) (List.map (sub.typ sub) tys)
-    | Pcl_structure s ->
-        structure ~loc ~attrs (sub.class_structure sub s)
-    | Pcl_fun (lab, e, p, ce) ->
-        fun_ ~loc ~attrs lab
-          (map_opt (sub.expr sub) e)
-          (sub.pat sub p)
-          (sub.class_expr sub ce)
-    | Pcl_apply (ce, l) ->
-        apply ~loc ~attrs (sub.class_expr sub ce)
-          (List.map (map_snd (sub.expr sub)) l)
-    | Pcl_let (r, vbs, ce) ->
-        let_ ~loc ~attrs r (List.map (sub.value_binding sub) vbs)
-          (sub.class_expr sub ce)
-    | Pcl_constraint (ce, ct) ->
-        constraint_ ~loc ~attrs (sub.class_expr sub ce) (sub.class_type sub ct)
-    | Pcl_extension x -> extension ~loc ~attrs (sub.extension sub x)
-    | Pcl_open (ovf, lid, ce) ->
-        open_ ~loc ~attrs ovf (map_loc sub lid) (sub.class_expr sub ce)
-
-  let map_kind sub = function
-    | Cfk_concrete (o, e) -> Cfk_concrete (o, sub.expr sub e)
-    | Cfk_virtual t -> Cfk_virtual (sub.typ sub t)
-
-  let map_field sub {pcf_desc = desc; pcf_loc = loc; pcf_attributes = attrs} =
-    let open Cf in
-    let loc = sub.location sub loc in
-    let attrs = sub.attributes sub attrs in
-    match desc with
-    | Pcf_inherit () ->
-      {pcf_desc = desc; pcf_loc = loc; pcf_attributes = attrs}
-    | Pcf_val (s, m, k) -> val_ ~loc ~attrs (map_loc sub s) m (map_kind sub k)
-    | Pcf_method (s, p, k) ->
-        method_ ~loc ~attrs (map_loc sub s) p (map_kind sub k)
-    | Pcf_constraint (t1, t2) ->
-        constraint_ ~loc ~attrs (sub.typ sub t1) (sub.typ sub t2)
-    | Pcf_initializer e -> initializer_ ~loc ~attrs (sub.expr sub e)
-    | Pcf_attribute x -> attribute ~loc (sub.attribute sub x)
-    | Pcf_extension x -> extension ~loc ~attrs (sub.extension sub x)
-
-  let map_structure sub {pcstr_self; pcstr_fields} =
-    {
-      pcstr_self = sub.pat sub pcstr_self;
-      pcstr_fields = List.map (sub.class_field sub) pcstr_fields;
-    }
-
-  let class_infos sub f {pci_virt; pci_params = pl; pci_name; pci_expr;
-                         pci_loc; pci_attributes} =
-    Ci.mk
-     ~virt:pci_virt
-     ~params:(List.map (map_fst (sub.typ sub)) pl)
-      (map_loc sub pci_name)
-      (f pci_expr)
-      ~loc:(sub.location sub pci_loc)
-      ~attrs:(sub.attributes sub pci_attributes)
-end
-
-(* Now, a generic AST mapper, to be extended to cover all kinds and
-   cases of the OCaml grammar.  The default behavior of the mapper is
-   the identity. *)
-
-let default_mapper =
-  {
-    structure = (fun this l -> List.map (this.structure_item this) l);
-    structure_item = M.map_structure_item;
-    module_expr = M.map;
-    signature = (fun this l -> List.map (this.signature_item this) l);
-    signature_item = MT.map_signature_item;
-    module_type = MT.map;
-    with_constraint = MT.map_with_constraint;
-    class_expr = CE.map;
-    class_field = CE.map_field;
-    class_structure = CE.map_structure;
-    class_type = CT.map;
-    class_type_field = CT.map_field;
-    class_signature = CT.map_signature;
-    class_type_declaration =
-      (fun this -> CE.class_infos this (this.class_type this));
-    class_description =
-      (fun this -> CE.class_infos this (this.class_type this));
-    type_declaration = T.map_type_declaration;
-    type_kind = T.map_type_kind;
-    typ = T.map;
-    type_extension = T.map_type_extension;
-    extension_constructor = T.map_extension_constructor;
-    value_description =
-      (fun this {pval_name; pval_type; pval_prim; pval_loc;
-                 pval_attributes} ->
-        Val.mk
-          (map_loc this pval_name)
-          (this.typ this pval_type)
-          ~attrs:(this.attributes this pval_attributes)
-          ~loc:(this.location this pval_loc)
-          ~prim:pval_prim
-      );
-
-    pat = P.map;
-    expr = E.map;
-
-    module_declaration =
-      (fun this {pmd_name; pmd_type; pmd_attributes; pmd_loc} ->
-         Md.mk
-           (map_loc this pmd_name)
-           (this.module_type this pmd_type)
-           ~attrs:(this.attributes this pmd_attributes)
-           ~loc:(this.location this pmd_loc)
-      );
-
-    module_type_declaration =
-      (fun this {pmtd_name; pmtd_type; pmtd_attributes; pmtd_loc} ->
-         Mtd.mk
-           (map_loc this pmtd_name)
-           ?typ:(map_opt (this.module_type this) pmtd_type)
-           ~attrs:(this.attributes this pmtd_attributes)
-           ~loc:(this.location this pmtd_loc)
-      );
-
-    module_binding =
-      (fun this {pmb_name; pmb_expr; pmb_attributes; pmb_loc} ->
-         Mb.mk (map_loc this pmb_name) (this.module_expr this pmb_expr)
-           ~attrs:(this.attributes this pmb_attributes)
-           ~loc:(this.location this pmb_loc)
-      );
-
-
-    open_description =
-      (fun this {popen_lid; popen_override; popen_attributes; popen_loc} ->
-         Opn.mk (map_loc this popen_lid)
-           ~override:popen_override
-           ~loc:(this.location this popen_loc)
-           ~attrs:(this.attributes this popen_attributes)
-      );
-
-
-    include_description =
-      (fun this {pincl_mod; pincl_attributes; pincl_loc} ->
-         Incl.mk (this.module_type this pincl_mod)
-           ~loc:(this.location this pincl_loc)
-           ~attrs:(this.attributes this pincl_attributes)
-      );
-
-    include_declaration =
-      (fun this {pincl_mod; pincl_attributes; pincl_loc} ->
-         Incl.mk (this.module_expr this pincl_mod)
-           ~loc:(this.location this pincl_loc)
-           ~attrs:(this.attributes this pincl_attributes)
-      );
-
-
-    value_binding =
-      (fun this {pvb_pat; pvb_expr; pvb_attributes; pvb_loc} ->
-         Vb.mk
-           (this.pat this pvb_pat)
-           (this.expr this pvb_expr)
-           ~loc:(this.location this pvb_loc)
-           ~attrs:(this.attributes this pvb_attributes)
-      );
-
-
-    constructor_declaration =
-      (fun this {pcd_name; pcd_args; pcd_res; pcd_loc; pcd_attributes} ->
-        Type.constructor
-          (map_loc this pcd_name)
-          ~args:(T.map_constructor_arguments this pcd_args)
-          ?res:(map_opt (this.typ this) pcd_res)
-          ~loc:(this.location this pcd_loc)
-          ~attrs:(this.attributes this pcd_attributes)
-      );
-
-    label_declaration =
-      (fun this {pld_name; pld_type; pld_loc; pld_mutable; pld_attributes} ->
-         Type.field
-           (map_loc this pld_name)
-           (this.typ this pld_type)
-           ~mut:pld_mutable
-           ~loc:(this.location this pld_loc)
-           ~attrs:(this.attributes this pld_attributes)
-      );
-
-    cases = (fun this l -> List.map (this.case this) l);
-    case =
-      (fun this {pc_lhs; pc_guard; pc_rhs} ->
-         {
-           pc_lhs = this.pat this pc_lhs;
-           pc_guard = map_opt (this.expr this) pc_guard;
-           pc_rhs = this.expr this pc_rhs;
-         }
-      );
-
-
-
-    location = (fun _this l -> l);
-
-    extension = (fun this (s, e) -> (map_loc this s, this.payload this e));
-    attribute = (fun this (s, e) -> (map_loc this s, this.payload this e));
-    attributes = (fun this l -> List.map (this.attribute this) l);
-    payload =
-      (fun this -> function
-         | PStr x -> PStr (this.structure this x)
-         | PSig x -> PSig (this.signature this x)
-         | PTyp x -> PTyp (this.typ this x)
-         | PPat (x, g) -> PPat (this.pat this x, map_opt (this.expr this) g)
-      );
-  }
-
-let rec extension_of_error {loc; msg; if_highlight; sub} =
-  { loc; txt = "ocaml.error" },
-  PStr ([Str.eval (Exp.constant (Pconst_string (msg, None)));
-         Str.eval (Exp.constant (Pconst_string (if_highlight, None)))] @
-        (List.map (fun ext -> Str.extension (extension_of_error ext)) sub))
-
-let attribute_of_warning loc s =
-  { loc; txt = "ocaml.ppwarning" },
-  PStr ([Str.eval ~loc (Exp.constant (Pconst_string (s, None)))])
-
-module StringMap = Map.Make(struct
-    type t = string
-    let compare = compare
-end)
-
-let cookies = ref StringMap.empty
-
-let get_cookie k =
-  try Some (StringMap.find k !cookies)
-  with Not_found -> None
-
-let set_cookie k v =
-  cookies := StringMap.add k v !cookies
-
-let tool_name_ref = ref "_none_"
-
-let tool_name () = !tool_name_ref
-
-
-module PpxContext = struct
-  open Longident
-  open Asttypes
-  open Ast_helper
-
-  let lid name = { txt = Lident name; loc = Location.none }
-
-  let make_string x = Exp.constant (Pconst_string (x, None))
-
-  let make_bool x =
-    if x
-    then Exp.construct (lid "true") None
-    else Exp.construct (lid "false") None
-
-  let rec make_list f lst =
-    match lst with
-    | x :: rest ->
-      Exp.construct (lid "::") (Some (Exp.tuple [f x; make_list f rest]))
-    | [] ->
-      Exp.construct (lid "[]") None
-
-  let make_pair f1 f2 (x1, x2) =
-    Exp.tuple [f1 x1; f2 x2]
-
-
-  let get_cookies () =
-    lid "cookies",
-    make_list (make_pair make_string (fun x -> x))
-      (StringMap.bindings !cookies)
-
-  let mk fields =
-    { txt = "ocaml.ppx.context"; loc = Location.none },
-    Parsetree.PStr [Str.eval (Exp.record fields None)]
-
-  let make ~tool_name () =
-    let fields =
-      [
-        lid "tool_name",    make_string tool_name;
-        lid "include_dirs", make_list make_string !Clflags.include_dirs;
-        lid "load_path",    make_list make_string !Config.load_path;
-        lid "open_modules", make_list make_string !Clflags.open_modules;
-        lid "debug",        make_bool !Clflags.debug;
-        get_cookies ()
-      ]
-    in
-    mk fields
-
-  let get_fields = function
-    | PStr [{pstr_desc = Pstr_eval
-                 ({ pexp_desc = Pexp_record (fields, None) }, [])}] ->
-        fields
-    | _ ->
-        raise_errorf "Internal error: invalid [@@@ocaml.ppx.context] syntax"
-
-  let restore fields =
-    let field name payload =
-      let rec get_string = function
-        | { pexp_desc = Pexp_constant (Pconst_string (str, None)) } -> str
-        | _ -> raise_errorf "Internal error: invalid [@@@ocaml.ppx.context \
-                             { %s }] string syntax" name
-      and get_bool pexp =
-        match pexp with
-        | {pexp_desc = Pexp_construct ({txt = Longident.Lident "true"},
-                                       None)} ->
-            true
-        | {pexp_desc = Pexp_construct ({txt = Longident.Lident "false"},
-                                       None)} ->
-            false
-        | _ -> raise_errorf "Internal error: invalid [@@@ocaml.ppx.context \
-                             { %s }] bool syntax" name
-      and get_list elem = function
-        | {pexp_desc =
-             Pexp_construct ({txt = Longident.Lident "::"},
-                             Some {pexp_desc = Pexp_tuple [exp; rest]}) } ->
-            elem exp :: get_list elem rest
-        | {pexp_desc =
-             Pexp_construct ({txt = Longident.Lident "[]"}, None)} ->
-            []
-        | _ -> raise_errorf "Internal error: invalid [@@@ocaml.ppx.context \
-                             { %s }] list syntax" name
-      and get_pair f1 f2 = function
-        | {pexp_desc = Pexp_tuple [e1; e2]} ->
-            (f1 e1, f2 e2)
-        | _ -> raise_errorf "Internal error: invalid [@@@ocaml.ppx.context \
-                             { %s }] pair syntax" name
-      in
-      match name with
-      | "tool_name" ->
-          tool_name_ref := get_string payload
-      | "include_dirs" ->
-          Clflags.include_dirs := get_list get_string payload
-      | "load_path" ->
-          Config.load_path := get_list get_string payload
-      | "open_modules" ->
-          Clflags.open_modules := get_list get_string payload
-      | "debug" ->
-          Clflags.debug := get_bool payload
-      | "cookies" ->
-          let l = get_list (get_pair get_string (fun x -> x)) payload in
-          cookies :=
-            List.fold_left
-              (fun s (k, v) -> StringMap.add k v s) StringMap.empty
-              l
-      | _ ->
-          ()
-    in
-    List.iter (function ({txt=Lident name}, x) -> field name x | _ -> ()) fields
-
-  let update_cookies fields =
-    let fields =
-      List.filter
-        (function ({txt=Lident "cookies"}, _) -> false | _ -> true)
-        fields
-    in
-    fields @ [get_cookies ()]
-end
-
-let ppx_context = PpxContext.make
-
-let extension_of_exn exn =
-  match error_of_exn exn with
-  | Some (`Ok error) -> extension_of_error error
-  | Some `Already_displayed -> { loc = Location.none; txt = "ocaml.error" }, PStr []
-  | None -> raise exn
-
-
-let apply_lazy ~source ~target mapper =
-  let implem ast =
-    let fields, ast =
-      match ast with
-      | {pstr_desc = Pstr_attribute ({txt = "ocaml.ppx.context"}, x)} :: l ->
-          PpxContext.get_fields x, l
-      | _ -> [], ast
-    in
-    PpxContext.restore fields;
-    let ast =
-      try
-        let mapper = mapper () in
-        mapper.structure mapper ast
-      with exn ->
-        [{pstr_desc = Pstr_extension (extension_of_exn exn, []);
-          pstr_loc  = Location.none}]
-    in
-    let fields = PpxContext.update_cookies fields in
-    Str.attribute (PpxContext.mk fields) :: ast
-  in
-  let iface ast =
-    let fields, ast =
-      match ast with
-      | {psig_desc = Psig_attribute ({txt = "ocaml.ppx.context"}, x)} :: l ->
-          PpxContext.get_fields x, l
-      | _ -> [], ast
-    in
-    PpxContext.restore fields;
-    let ast =
-      try
-        let mapper = mapper () in
-        mapper.signature mapper ast
-      with exn ->
-        [{psig_desc = Psig_extension (extension_of_exn exn, []);
-          psig_loc  = Location.none}]
-    in
-    let fields = PpxContext.update_cookies fields in
-    Sig.attribute (PpxContext.mk fields) :: ast
-  in
-
-  let ic = open_in_bin source in
-  let magic =
-    really_input_string ic (String.length Config.ast_impl_magic_number)
-  in
-
-  let rewrite transform =
-    Location.set_input_name @@ input_value ic;
-    let ast = input_value ic in
-    close_in ic;
-    let ast = transform ast in
-    let oc = open_out_bin target in
-    output_string oc magic;
-    output_value oc !Location.input_name;
-    output_value oc ast;
-    close_out oc
-  and fail () =
-    close_in ic;
-    failwith "Ast_mapper: OCaml version mismatch or malformed input";
-  in
-
-  if magic = Config.ast_impl_magic_number then
-    rewrite (implem : structure -> structure)
-  else if magic = Config.ast_intf_magic_number then
-    rewrite (iface : signature -> signature)
-  else fail ()
-
-let drop_ppx_context_str ~restore = function
-  | {pstr_desc = Pstr_attribute({Location.txt = "ocaml.ppx.context"}, a)}
-    :: items ->
-      if restore then
-        PpxContext.restore (PpxContext.get_fields a);
-      items
-  | items -> items
-
-let drop_ppx_context_sig ~restore = function
-  | {psig_desc = Psig_attribute({Location.txt = "ocaml.ppx.context"}, a)}
-    :: items ->
-      if restore then
-        PpxContext.restore (PpxContext.get_fields a);
-      items
-  | items -> items
-
-let add_ppx_context_str ~tool_name ast =
-  Ast_helper.Str.attribute (ppx_context ~tool_name ()) :: ast
-
-let add_ppx_context_sig ~tool_name ast =
-  Ast_helper.Sig.attribute (ppx_context ~tool_name ()) :: ast
-
-
-let apply ~source ~target mapper =
-  apply_lazy ~source ~target (fun () -> mapper)
-
-let run_main mapper =
-  try
-    let a = Sys.argv in
-    let n = Array.length a in
-    if n > 2 then
-      let mapper () =
-        try mapper (Array.to_list (Array.sub a 1 (n - 3)))
-        with exn ->
-          (* PR#6463 *)
-          let f _ _ = raise exn in
-          {default_mapper with structure = f; signature = f}
-      in
-      apply_lazy ~source:a.(n - 2) ~target:a.(n - 1) mapper
-    else begin
-      Printf.eprintf "Usage: %s [extra_args] <infile> <outfile>\n%!"
-                     Sys.executable_name;
-      exit 2
-    end
-  with exn ->
-    prerr_endline (Printexc.to_string exn);
-    exit 2
-
-let register_function = ref (fun _name f -> run_main f)
-let register name f = !register_function name f
diff --git a/src/compiler-libs-406/ast_mapper.mli b/src/compiler-libs-406/ast_mapper.mli
deleted file mode 100644
index 75d33e61..00000000
--- a/src/compiler-libs-406/ast_mapper.mli
+++ /dev/null
@@ -1,199 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** The interface of a -ppx rewriter
-
-  A -ppx rewriter is a program that accepts a serialized abstract syntax
-  tree and outputs another, possibly modified, abstract syntax tree.
-  This module encapsulates the interface between the compiler and
-  the -ppx rewriters, handling such details as the serialization format,
-  forwarding of command-line flags, and storing state.
-
-  {!mapper} allows to implement AST rewriting using open recursion.
-  A typical mapper would be based on {!default_mapper}, a deep
-  identity mapper, and will fall back on it for handling the syntax it
-  does not modify. For example:
-
-  {[
-open Asttypes
-open Parsetree
-open Ast_mapper
-
-let test_mapper argv =
-  { default_mapper with
-    expr = fun mapper expr ->
-      match expr with
-      | { pexp_desc = Pexp_extension ({ txt = "test" }, PStr [])} ->
-        Ast_helper.Exp.constant (Const_int 42)
-      | other -> default_mapper.expr mapper other; }
-
-let () =
-  register "ppx_test" test_mapper]}
-
-  This -ppx rewriter, which replaces [[%test]] in expressions with
-  the constant [42], can be compiled using
-  [ocamlc -o ppx_test -I +compiler-libs ocamlcommon.cma ppx_test.ml].
-
-  *)
-
-open Parsetree
-
-(** {1 A generic Parsetree mapper} *)
-
-type mapper = {
-  attribute: mapper -> attribute -> attribute;
-  attributes: mapper -> attribute list -> attribute list;
-  case: mapper -> case -> case;
-  cases: mapper -> case list -> case list;
-  class_description: mapper -> class_description -> class_description;
-  class_expr: mapper -> class_expr -> class_expr;
-  class_field: mapper -> class_field -> class_field;
-  class_signature: mapper -> class_signature -> class_signature;
-  class_structure: mapper -> class_structure -> class_structure;
-  class_type: mapper -> class_type -> class_type;
-  class_type_declaration: mapper -> class_type_declaration
-                          -> class_type_declaration;
-  class_type_field: mapper -> class_type_field -> class_type_field;
-  constructor_declaration: mapper -> constructor_declaration
-                           -> constructor_declaration;
-  expr: mapper -> expression -> expression;
-  extension: mapper -> extension -> extension;
-  extension_constructor: mapper -> extension_constructor
-                         -> extension_constructor;
-  include_declaration: mapper -> include_declaration -> include_declaration;
-  include_description: mapper -> include_description -> include_description;
-  label_declaration: mapper -> label_declaration -> label_declaration;
-  location: mapper -> Location.t -> Location.t;
-  module_binding: mapper -> module_binding -> module_binding;
-  module_declaration: mapper -> module_declaration -> module_declaration;
-  module_expr: mapper -> module_expr -> module_expr;
-  module_type: mapper -> module_type -> module_type;
-  module_type_declaration: mapper -> module_type_declaration
-                           -> module_type_declaration;
-  open_description: mapper -> open_description -> open_description;
-  pat: mapper -> pattern -> pattern;
-  payload: mapper -> payload -> payload;
-  signature: mapper -> signature -> signature;
-  signature_item: mapper -> signature_item -> signature_item;
-  structure: mapper -> structure -> structure;
-  structure_item: mapper -> structure_item -> structure_item;
-  typ: mapper -> core_type -> core_type;
-  type_declaration: mapper -> type_declaration -> type_declaration;
-  type_extension: mapper -> type_extension -> type_extension;
-  type_kind: mapper -> type_kind -> type_kind;
-  value_binding: mapper -> value_binding -> value_binding;
-  value_description: mapper -> value_description -> value_description;
-  with_constraint: mapper -> with_constraint -> with_constraint;
-}
-(** A mapper record implements one "method" per syntactic category,
-    using an open recursion style: each method takes as its first
-    argument the mapper to be applied to children in the syntax
-    tree. *)
-
-val default_mapper: mapper
-(** A default mapper, which implements a "deep identity" mapping. *)
-
-(** {1 Apply mappers to compilation units} *)
-
-val tool_name: unit -> string
-(** Can be used within a ppx preprocessor to know which tool is
-    calling it ["ocamlc"], ["ocamlopt"], ["ocamldoc"], ["ocamldep"],
-    ["ocaml"], ...  Some global variables that reflect command-line
-    options are automatically synchronized between the calling tool
-    and the ppx preprocessor: {!Clflags.include_dirs},
-    {!Config.load_path}, {!Clflags.open_modules}, {!Clflags.for_package},
-    {!Clflags.debug}. *)
-
-
-val apply: source:string -> target:string -> mapper -> unit
-(** Apply a mapper (parametrized by the unit name) to a dumped
-    parsetree found in the [source] file and put the result in the
-    [target] file. The [structure] or [signature] field of the mapper
-    is applied to the implementation or interface.  *)
-
-val run_main: (string list -> mapper) -> unit
-(** Entry point to call to implement a standalone -ppx rewriter from a
-    mapper, parametrized by the command line arguments.  The current
-    unit name can be obtained from {!Location.input_name}.  This
-    function implements proper error reporting for uncaught
-    exceptions. *)
-
-(** {1 Registration API} *)
-
-val register_function: (string -> (string list -> mapper) -> unit) ref
-
-val register: string -> (string list -> mapper) -> unit
-(** Apply the [register_function].  The default behavior is to run the
-    mapper immediately, taking arguments from the process command
-    line.  This is to support a scenario where a mapper is linked as a
-    stand-alone executable.
-
-    It is possible to overwrite the [register_function] to define
-    "-ppx drivers", which combine several mappers in a single process.
-    Typically, a driver starts by defining [register_function] to a
-    custom implementation, then lets ppx rewriters (linked statically
-    or dynamically) register themselves, and then run all or some of
-    them.  It is also possible to have -ppx drivers apply rewriters to
-    only specific parts of an AST.
-
-    The first argument to [register] is a symbolic name to be used by
-    the ppx driver.  *)
-
-
-(** {1 Convenience functions to write mappers} *)
-
-val map_opt: ('a -> 'b) -> 'a option -> 'b option
-
-val extension_of_error: Location.error -> extension
-(** Encode an error into an 'ocaml.error' extension node which can be
-    inserted in a generated Parsetree.  The compiler will be
-    responsible for reporting the error. *)
-
-val attribute_of_warning: Location.t -> string -> attribute
-(** Encode a warning message into an 'ocaml.ppwarning' attribute which can be
-    inserted in a generated Parsetree.  The compiler will be
-    responsible for reporting the warning. *)
-
-(** {1 Helper functions to call external mappers} *)
-
-val add_ppx_context_str:
-    tool_name:string -> Parsetree.structure -> Parsetree.structure
-(** Extract information from the current environment and encode it
-    into an attribute which is prepended to the list of structure
-    items in order to pass the information to an external
-    processor. *)
-
-val add_ppx_context_sig:
-    tool_name:string -> Parsetree.signature -> Parsetree.signature
-(** Same as [add_ppx_context_str], but for signatures. *)
-
-val drop_ppx_context_str:
-    restore:bool -> Parsetree.structure -> Parsetree.structure
-(** Drop the ocaml.ppx.context attribute from a structure.  If
-    [restore] is true, also restore the associated data in the current
-    process. *)
-
-val drop_ppx_context_sig:
-    restore:bool -> Parsetree.signature -> Parsetree.signature
-(** Same as [drop_ppx_context_str], but for signatures. *)
-
-(** {1 Cookies} *)
-
-(** Cookies are used to pass information from a ppx processor to
-    a further invocation of itself, when called from the OCaml
-    toplevel (or other tools that support cookies). *)
-
-val set_cookie: string -> Parsetree.expression -> unit
-val get_cookie: string -> Parsetree.expression option
diff --git a/src/compiler-libs-406/asttypes.mli b/src/compiler-libs-406/asttypes.mli
deleted file mode 100644
index 8cab1c6b..00000000
--- a/src/compiler-libs-406/asttypes.mli
+++ /dev/null
@@ -1,58 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Auxiliary AST types used by parsetree and typedtree. *)
-
-type constant =
-    Const_int of int
-  | Const_char of char
-  | Const_string of string * string option
-  | Const_float of string
-  | Const_int32 of int32
-  | Const_int64 of int64
-  | Const_nativeint of nativeint
-
-type rec_flag = Nonrecursive | Recursive
-
-type direction_flag = Upto | Downto
-
-(* Order matters, used in polymorphic comparison *)
-type private_flag = Private | Public
-
-type mutable_flag = Immutable | Mutable
-
-type virtual_flag = Virtual | Concrete
-
-type override_flag = Override | Fresh
-
-type closed_flag = Closed | Open
-
-type label = string
-
-type arg_label =
-    Nolabel
-  | Labelled of string (*  label:T -> ... *)
-  | Optional of string (* ?label:T -> ... *)
-
-type 'a loc = 'a Location.loc = {
-  txt : 'a;
-  loc : Location.t;
-}
-
-
-type variance =
-  | Covariant
-  | Contravariant
-  | Invariant
diff --git a/src/compiler-libs-406/bsc_warnings.ml b/src/compiler-libs-406/bsc_warnings.ml
deleted file mode 100644
index 1dc1fe28..00000000
--- a/src/compiler-libs-406/bsc_warnings.ml
+++ /dev/null
@@ -1,77 +0,0 @@
-(* Copyright (C) 2020- Hongbo Zhang, Authors of ReScript 
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * In addition to the permissions granted to you by the LGPL, you may combine
- * or link a "work that uses the Library" with a publicly distributed version
- * of this file to produce a combined library or application, then distribute
- * that combined work under the terms of your choosing, with no requirement
- * to comply with the obligations normally placed on you by section 4 of the
- * LGPL version 3 (or the corresponding section of a later version of the LGPL
- * should you choose to use a later version).
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *)
-
-
-
-(**
-   See the meanings of the warning codes here: https://caml.inria.fr/pub/docs/manual-ocaml/comp.html#sec281
-
-   - 30 Two labels or constructors of the same name are defined in two mutually recursive types.
-   - 40 Constructor or label name used out of scope.
-
-   - 6 Label omitted in function application.
-   - 7 Method overridden.
-   - 9 Missing fields in a record pattern. (*Not always desired, in some cases need [@@@warning "+9"] *)
-   - 27 Innocuous unused variable: unused variable that is not bound with let nor as, and doesn’t start with an underscore (_) character.
-   - 29 Unescaped end-of-line in a string constant (non-portable code).
-   - 32 .. 39 Unused blabla
-   - 44 Open statement shadows an already defined identifier.
-   - 45 Open statement shadows an already defined label or constructor.
-   - 48 Implicit elimination of optional arguments. https://caml.inria.fr/mantis/view.php?id=6352
-   - 101 (bsb-specific) unsafe polymorphic comparison.
-*) 
-
-
-(*
-  The purpose of default warning set is to make it strict while
-  not annoy user too much
-
-  -4 Fragile pattern matching: matching that will remain complete even if additional con- structors are added to one of the variant types matched.
-  We turn it off since common pattern
-   {[
-     match x with | A -> .. |  _ -> false
-   ]}
-
-   -9 Missing fields in a record pattern.
-   only in some special cases that we need all fields being listed
-
-   We encourage people to write code based on type based disambigution
-   40,41,42 are enabled for compatiblity reasons  
-   -40 Constructor or label name used out of scope
-   This is intentional, we should never warn it
-   - 41 Ambiguous constructor or label name.
-     It is turned off since it prevents such cases below:
-   {[
-     type a = A |B 
-     type b = A | B | C
-   ]}
-   - 42 Disambiguated constructor or label name (compatibility warning).
-
-   - 50 Unexpected documentation comment.
-
-   - 102 Bs_polymorphic_comparison
-*)
-let defaults_w = "+a-4-9-20-40-41-42-50-61-102"
-let defaults_warn_error = "-a+5+6+101+109";;
-(*TODO: add +10*)
\ No newline at end of file
diff --git a/src/compiler-libs-406/btype.ml b/src/compiler-libs-406/btype.ml
deleted file mode 100644
index d94693b1..00000000
--- a/src/compiler-libs-406/btype.ml
+++ /dev/null
@@ -1,737 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*  Xavier Leroy and Jerome Vouillon, projet Cristal, INRIA Rocquencourt  *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Basic operations on core types *)
-
-open Misc
-open Asttypes
-open Types
-
-(**** Sets, maps and hashtables of types ****)
-
-module TypeSet = Set.Make(TypeOps)
-module TypeMap = Map.Make (TypeOps)
-module TypeHash = Hashtbl.Make(TypeOps)
-
-(**** Forward declarations ****)
-
-let print_raw =
-  ref (fun _ -> assert false : Format.formatter -> type_expr -> unit)
-
-(**** Type level management ****)
-
-let generic_level = 100000000
-
-(* Used to mark a type during a traversal. *)
-let lowest_level = 0
-let pivot_level = 2 * lowest_level - 1
-    (* pivot_level - lowest_level < lowest_level *)
-
-(**** Some type creators ****)
-
-let new_id = ref (-1)
-
-let newty2 level desc  =
-  incr new_id; { desc; level; id = !new_id }
-let newgenty desc      = newty2 generic_level desc
-let newgenvar ?name () = newgenty (Tvar name)
-(*
-let newmarkedvar level =
-  incr new_id; { desc = Tvar; level = pivot_level - level; id = !new_id }
-let newmarkedgenvar () =
-  incr new_id;
-  { desc = Tvar; level = pivot_level - generic_level; id = !new_id }
-*)
-
-(**** Check some types ****)
-
-let is_Tvar = function {desc=Tvar _} -> true | _ -> false
-let is_Tunivar = function {desc=Tunivar _} -> true | _ -> false
-let is_Tconstr = function {desc=Tconstr _} -> true | _ -> false
-
-let dummy_method = "*dummy method*"
-let default_mty = function
-    Some mty -> mty
-  | None -> Mty_signature []
-
-(**** Definitions for backtracking ****)
-
-type change =
-    Ctype of type_expr * type_desc
-  | Ccompress of type_expr * type_desc * type_desc
-  | Clevel of type_expr * int
-  | Cname of
-      (Path.t * type_expr list) option ref * (Path.t * type_expr list) option
-  | Crow of row_field option ref * row_field option
-  | Ckind of field_kind option ref * field_kind option
-  | Ccommu of commutable ref * commutable
-  | Cuniv of type_expr option ref * type_expr option
-  | Ctypeset of TypeSet.t ref * TypeSet.t
-
-type changes =
-    Change of change * changes ref
-  | Unchanged
-  | Invalid
-
-let trail = Weak.create 1
-
-let log_change ch =
-  match Weak.get trail 0 with None -> ()
-  | Some r ->
-      let r' = ref Unchanged in
-      r := Change (ch, r');
-      Weak.set trail 0 (Some r')
-
-(**** Representative of a type ****)
-
-let rec field_kind_repr =
-  function
-    Fvar {contents = Some kind} -> field_kind_repr kind
-  | kind                        -> kind
-
-let rec repr_link compress t d =
- function
-   {desc = Tlink t' as d'} ->
-     repr_link true t d' t'
- | {desc = Tfield (_, k, _, t') as d'} when field_kind_repr k = Fabsent ->
-     repr_link true t d' t'
- | t' ->
-     if compress then begin
-       log_change (Ccompress (t, t.desc, d)); t.desc <- d
-     end;
-     t'
-
-let repr t =
-  match t.desc with
-   Tlink t' as d ->
-     repr_link false t d t'
- | Tfield (_, k, _, t') as d when field_kind_repr k = Fabsent ->
-     repr_link false t d t'
- | _ -> t
-
-let rec commu_repr = function
-    Clink r when !r <> Cunknown -> commu_repr !r
-  | c -> c
-
-let rec row_field_repr_aux tl = function
-    Reither(_, tl', _, {contents = Some fi}) ->
-      row_field_repr_aux (tl@tl') fi
-  | Reither(c, tl', m, r) ->
-      Reither(c, tl@tl', m, r)
-  | Rpresent (Some _) when tl <> [] ->
-      Rpresent (Some (List.hd tl))
-  | fi -> fi
-
-let row_field_repr fi = row_field_repr_aux [] fi
-
-let rec rev_concat l ll =
-  match ll with
-    [] -> l
-  | l'::ll -> rev_concat (l'@l) ll
-
-let rec row_repr_aux ll row =
-  match (repr row.row_more).desc with
-  | Tvariant row' ->
-      let f = row.row_fields in
-      row_repr_aux (if f = [] then ll else f::ll) row'
-  | _ ->
-      if ll = [] then row else
-      {row with row_fields = rev_concat row.row_fields ll}
-
-let row_repr row = row_repr_aux [] row
-
-let rec row_field tag row =
-  let rec find = function
-    | (tag',f) :: fields ->
-        if tag = tag' then row_field_repr f else find fields
-    | [] ->
-        match repr row.row_more with
-        | {desc=Tvariant row'} -> row_field tag row'
-        | _ -> Rabsent
-  in find row.row_fields
-
-let rec row_more row =
-  match repr row.row_more with
-  | {desc=Tvariant row'} -> row_more row'
-  | ty -> ty
-
-let row_fixed row =
-  let row = row_repr row in
-  row.row_fixed ||
-  match (repr row.row_more).desc with
-    Tvar _ | Tnil -> false
-  | Tunivar _ | Tconstr _ -> true
-  | _ -> assert false
-
-let static_row row =
-  let row = row_repr row in
-  row.row_closed &&
-  List.for_all
-    (fun (_,f) -> match row_field_repr f with Reither _ -> false | _ -> true)
-    row.row_fields
-
-let hash_variant s =
-  let accu = ref 0 in
-  for i = 0 to String.length s - 1 do
-    accu := 223 * !accu + Char.code s.[i]
-  done;
-  (* reduce to 31 bits *)
-  accu := !accu land (1 lsl 31 - 1);
-  (* make it signed for 64 bits architectures *)
-  if !accu > 0x3FFFFFFF then !accu - (1 lsl 31) else !accu
-
-let proxy ty =
-  let ty0 = repr ty in
-  match ty0.desc with
-  | Tvariant row when not (static_row row) ->
-      row_more row
-  | Tobject (ty, _) ->
-      let rec proxy_obj ty =
-        match ty.desc with
-          Tfield (_, _, _, ty) | Tlink ty -> proxy_obj ty
-        | Tvar _ | Tunivar _ | Tconstr _ -> ty
-        | Tnil -> ty0
-        | _ -> assert false
-      in proxy_obj ty
-  | _ -> ty0
-
-(**** Utilities for fixed row private types ****)
-
-let row_of_type t = 
-  match (repr t).desc with
-    Tobject(t,_) ->
-      let rec get_row t =
-        let t = repr t in
-        match t.desc with
-          Tfield(_,_,_,t) -> get_row t
-        | _ -> t
-      in get_row t
-  | Tvariant row ->
-      row_more row
-  | _ ->
-      t
-
-let has_constr_row t =
-  not (is_Tconstr t) && is_Tconstr (row_of_type t)
-
-let is_row_name s =
-  let l = String.length s in
-  if l < 4 then false else String.sub s (l-4) 4 = "#row"
-
-let is_constr_row ~allow_ident t =
-  match t.desc with
-    Tconstr (Path.Pident id, _, _) when allow_ident ->
-      is_row_name (Ident.name id)
-  | Tconstr (Path.Pdot (_, s, _), _, _) -> is_row_name s
-  | _ -> false
-
-
-                  (**********************************)
-                  (*  Utilities for type traversal  *)
-                  (**********************************)
-
-let rec iter_row f row =
-  List.iter
-    (fun (_, fi) ->
-      match row_field_repr fi with
-      | Rpresent(Some ty) -> f ty
-      | Reither(_, tl, _, _) -> List.iter f tl
-      | _ -> ())
-    row.row_fields;
-  match (repr row.row_more).desc with
-    Tvariant row -> iter_row f row
-  | Tvar _ | Tunivar _ | Tsubst _ | Tconstr _ | Tnil ->
-      Misc.may (fun (_,l) -> List.iter f l) row.row_name
-  | _ -> assert false
-
-let iter_type_expr f ty =
-  match ty.desc with
-    Tvar _              -> ()
-  | Tarrow (_, ty1, ty2, _) -> f ty1; f ty2
-  | Ttuple l            -> List.iter f l
-  | Tconstr (_, l, _)   -> List.iter f l
-  | Tobject(ty, {contents = Some (_, p)})
-                        -> f ty; List.iter f p
-  | Tobject (ty, _)     -> f ty
-  | Tvariant row        -> iter_row f row; f (row_more row)
-  | Tfield (_, _, ty1, ty2) -> f ty1; f ty2
-  | Tnil                -> ()
-  | Tlink ty            -> f ty
-  | Tsubst ty           -> f ty
-  | Tunivar _           -> ()
-  | Tpoly (ty, tyl)     -> f ty; List.iter f tyl
-  | Tpackage (_, _, l)  -> List.iter f l
-
-let rec iter_abbrev f = function
-    Mnil                   -> ()
-  | Mcons(_, _, ty, ty', rem) -> f ty; f ty'; iter_abbrev f rem
-  | Mlink rem              -> iter_abbrev f !rem
-
-type type_iterators =
-  { it_signature: type_iterators -> signature -> unit;
-    it_signature_item: type_iterators -> signature_item -> unit;
-    it_value_description: type_iterators -> value_description -> unit;
-    it_type_declaration: type_iterators -> type_declaration -> unit;
-    it_extension_constructor: type_iterators -> extension_constructor -> unit;
-    it_module_declaration: type_iterators -> module_declaration -> unit;
-    it_modtype_declaration: type_iterators -> modtype_declaration -> unit;
-    it_class_declaration: type_iterators -> class_declaration -> unit;
-    it_class_type_declaration: type_iterators -> class_type_declaration -> unit;
-    it_module_type: type_iterators -> module_type -> unit;
-    it_class_type: type_iterators -> class_type -> unit;
-    it_type_kind: type_iterators -> type_kind -> unit;
-    it_do_type_expr: type_iterators -> type_expr -> unit;
-    it_type_expr: type_iterators -> type_expr -> unit;
-    it_path: Path.t -> unit; }
-
-let iter_type_expr_cstr_args f = function
-  | Cstr_tuple tl -> List.iter f tl
-  | Cstr_record lbls -> List.iter (fun d -> f d.ld_type) lbls
-
-let map_type_expr_cstr_args f = function
-  | Cstr_tuple tl -> Cstr_tuple (List.map f tl)
-  | Cstr_record lbls ->
-      Cstr_record (List.map (fun d -> {d with ld_type=f d.ld_type}) lbls)
-
-let iter_type_expr_kind f = function
-  | Type_abstract -> ()
-  | Type_variant cstrs ->
-      List.iter
-        (fun cd ->
-           iter_type_expr_cstr_args f cd.cd_args;
-           Misc.may f cd.cd_res
-        )
-        cstrs
-  | Type_record(lbls, _) ->
-      List.iter (fun d -> f d.ld_type) lbls
-  | Type_open ->
-      ()
-
-
-let type_iterators =
-  let it_signature it =
-    List.iter (it.it_signature_item it)
-  and it_signature_item it = function
-      Sig_value (_, vd)     -> it.it_value_description it vd
-    | Sig_type (_, td, _)   -> it.it_type_declaration it td
-    | Sig_typext (_, td, _) -> it.it_extension_constructor it td
-    | Sig_module (_, md, _) -> it.it_module_declaration it md
-    | Sig_modtype (_, mtd)  -> it.it_modtype_declaration it mtd
-    | Sig_class (_, cd, _)  -> it.it_class_declaration it cd
-    | Sig_class_type (_, ctd, _) -> it.it_class_type_declaration it ctd
-  and it_value_description it vd =
-    it.it_type_expr it vd.val_type
-  and it_type_declaration it td =
-    List.iter (it.it_type_expr it) td.type_params;
-    may (it.it_type_expr it) td.type_manifest;
-    it.it_type_kind it td.type_kind
-  and it_extension_constructor it td =
-    it.it_path td.ext_type_path;
-    List.iter (it.it_type_expr it) td.ext_type_params;
-    iter_type_expr_cstr_args (it.it_type_expr it) td.ext_args;
-    may (it.it_type_expr it) td.ext_ret_type
-  and it_module_declaration it md =
-    it.it_module_type it md.md_type
-  and it_modtype_declaration it mtd =
-    may (it.it_module_type it) mtd.mtd_type
-  and it_class_declaration it cd =
-    List.iter (it.it_type_expr it) cd.cty_params;
-    it.it_class_type it cd.cty_type;
-    may (it.it_type_expr it) cd.cty_new;
-    it.it_path cd.cty_path
-  and it_class_type_declaration it ctd =
-    List.iter (it.it_type_expr it) ctd.clty_params;
-    it.it_class_type it ctd.clty_type;
-    it.it_path ctd.clty_path
-  and it_module_type it = function
-      Mty_ident p
-    | Mty_alias(_, p) -> it.it_path p
-    | Mty_signature sg -> it.it_signature it sg
-    | Mty_functor (_, mto, mt) ->
-        may (it.it_module_type it) mto;
-        it.it_module_type it mt
-  and it_class_type it = function
-      Cty_constr (p, tyl, cty) ->
-        it.it_path p;
-        List.iter (it.it_type_expr it) tyl;
-        it.it_class_type it cty
-    | Cty_signature cs ->
-        it.it_type_expr it cs.csig_self;
-        Vars.iter (fun _ (_,_,ty) -> it.it_type_expr it ty) cs.csig_vars;
-        List.iter
-          (fun (p, tl) -> it.it_path p; List.iter (it.it_type_expr it) tl)
-          cs.csig_inher
-    | Cty_arrow  (_, ty, cty) ->
-        it.it_type_expr it ty;
-        it.it_class_type it cty
-  and it_type_kind it kind =
-    iter_type_expr_kind (it.it_type_expr it) kind
-  and it_do_type_expr it ty =
-    iter_type_expr (it.it_type_expr it) ty;
-    match ty.desc with
-      Tconstr (p, _, _)
-    | Tobject (_, {contents=Some (p, _)})
-    | Tpackage (p, _, _) ->
-        it.it_path p
-    | Tvariant row ->
-        may (fun (p,_) -> it.it_path p) (row_repr row).row_name
-    | _ -> ()
-  and it_path _p = ()
-  in
-  { it_path; it_type_expr = it_do_type_expr; it_do_type_expr;
-    it_type_kind; it_class_type; it_module_type;
-    it_signature; it_class_type_declaration; it_class_declaration;
-    it_modtype_declaration; it_module_declaration; it_extension_constructor;
-    it_type_declaration; it_value_description; it_signature_item; }
-
-let copy_row f fixed row keep more =
-  let fields = List.map
-      (fun (l, fi) -> l,
-        match row_field_repr fi with
-        | Rpresent(Some ty) -> Rpresent(Some(f ty))
-        | Reither(c, tl, m, e) ->
-            let e = if keep then e else ref None in
-            let m = if row.row_fixed then fixed else m in
-            let tl = List.map f tl in
-            Reither(c, tl, m, e)
-        | _ -> fi)
-      row.row_fields in
-  let name =
-    match row.row_name with None -> None
-    | Some (path, tl) -> Some (path, List.map f tl) in
-  { row_fields = fields; row_more = more;
-    row_bound = (); row_fixed = row.row_fixed && fixed;
-    row_closed = row.row_closed; row_name = name; }
-
-let rec copy_kind = function
-    Fvar{contents = Some k} -> copy_kind k
-  | Fvar _   -> Fvar (ref None)
-  | Fpresent -> Fpresent
-  | Fabsent  -> assert false
-
-let copy_commu c =
-  if commu_repr c = Cok then Cok else Clink (ref Cunknown)
-
-(* Since univars may be used as row variables, we need to do some
-   encoding during substitution *)
-let rec norm_univar ty =
-  match ty.desc with
-    Tunivar _ | Tsubst _ -> ty
-  | Tlink ty           -> norm_univar ty
-  | Ttuple (ty :: _)   -> norm_univar ty
-  | _                  -> assert false
-
-let rec copy_type_desc ?(keep_names=false) f = function
-    Tvar _ as ty        -> if keep_names then ty else Tvar None
-  | Tarrow (p, ty1, ty2, c)-> Tarrow (p, f ty1, f ty2, copy_commu c)
-  | Ttuple l            -> Ttuple (List.map f l)
-  | Tconstr (p, l, _)   -> Tconstr (p, List.map f l, ref Mnil)
-  | Tobject(ty, {contents = Some (p, tl)})
-                        -> Tobject (f ty, ref (Some(p, List.map f tl)))
-  | Tobject (ty, _)     -> Tobject (f ty, ref None)
-  | Tvariant _          -> assert false (* too ambiguous *)
-  | Tfield (p, k, ty1, ty2) -> (* the kind is kept shared *)
-      Tfield (p, field_kind_repr k, f ty1, f ty2)
-  | Tnil                -> Tnil
-  | Tlink ty            -> copy_type_desc f ty.desc
-  | Tsubst _            -> assert false
-  | Tunivar _ as ty     -> ty (* always keep the name *)
-  | Tpoly (ty, tyl)     ->
-      let tyl = List.map (fun x -> norm_univar (f x)) tyl in
-      Tpoly (f ty, tyl)
-  | Tpackage (p, n, l)  -> Tpackage (p, n, List.map f l)
-
-(* Utilities for copying *)
-
-let saved_desc = ref []
-  (* Saved association of generic nodes with their description. *)
-
-let save_desc ty desc =
-  saved_desc := (ty, desc)::!saved_desc
-
-let saved_kinds = ref [] (* duplicated kind variables *)
-let new_kinds = ref []   (* new kind variables *)
-let dup_kind r =
-  (match !r with None -> () | Some _ -> assert false);
-  if not (List.memq r !new_kinds) then begin
-    saved_kinds := r :: !saved_kinds;
-    let r' = ref None in
-    new_kinds := r' :: !new_kinds;
-    r := Some (Fvar r')
-  end
-
-(* Restored type descriptions. *)
-let cleanup_types () =
-  List.iter (fun (ty, desc) -> ty.desc <- desc) !saved_desc;
-  List.iter (fun r -> r := None) !saved_kinds;
-  saved_desc := []; saved_kinds := []; new_kinds := []
-
-(* Mark a type. *)
-let rec mark_type ty =
-  let ty = repr ty in
-  if ty.level >= lowest_level then begin
-    ty.level <- pivot_level - ty.level;
-    iter_type_expr mark_type ty
-  end
-
-let mark_type_node ty =
-  let ty = repr ty in
-  if ty.level >= lowest_level then begin
-    ty.level <- pivot_level - ty.level;
-  end
-
-let mark_type_params ty =
-  iter_type_expr mark_type ty
-
-let type_iterators =
-  let it_type_expr it ty =
-    let ty = repr ty in
-    if ty.level >= lowest_level then begin
-      mark_type_node ty;
-      it.it_do_type_expr it ty;
-    end
-  in
-  {type_iterators with it_type_expr}
-
-
-(* Remove marks from a type. *)
-let rec unmark_type ty =
-  let ty = repr ty in
-  if ty.level < lowest_level then begin
-    ty.level <- pivot_level - ty.level;
-    iter_type_expr unmark_type ty
-  end
-
-let unmark_iterators =
-  let it_type_expr _it ty = unmark_type ty in
-  {type_iterators with it_type_expr}
-
-let unmark_type_decl decl =
-  unmark_iterators.it_type_declaration unmark_iterators decl
-
-let unmark_extension_constructor ext =
-  List.iter unmark_type ext.ext_type_params;
-  iter_type_expr_cstr_args unmark_type ext.ext_args;
-  Misc.may unmark_type ext.ext_ret_type
-
-let unmark_class_signature sign =
-  unmark_type sign.csig_self;
-  Vars.iter (fun _l (_m, _v, t) -> unmark_type t) sign.csig_vars
-
-let unmark_class_type cty =
-  unmark_iterators.it_class_type unmark_iterators cty
-
-
-                  (*******************************************)
-                  (*  Memorization of abbreviation expansion *)
-                  (*******************************************)
-
-(* Search whether the expansion has been memorized. *)
-
-let lte_public p1 p2 =  (* Private <= Public *)
-  match p1, p2 with
-  | Private, _ | _, Public -> true
-  | Public, Private -> false
-
-let rec find_expans priv p1 = function
-    Mnil -> None
-  | Mcons (priv', p2, _ty0, ty, _)
-    when lte_public priv priv' && Path.same p1 p2 -> Some ty
-  | Mcons (_, _, _, _, rem)   -> find_expans priv p1 rem
-  | Mlink {contents = rem} -> find_expans priv p1 rem
-
-(* debug: check for cycles in abbreviation. only works with -principal
-let rec check_expans visited ty =
-  let ty = repr ty in
-  assert (not (List.memq ty visited));
-  match ty.desc with
-    Tconstr (path, args, abbrev) ->
-      begin match find_expans path !abbrev with
-        Some ty' -> check_expans (ty :: visited) ty'
-      | None -> ()
-      end
-  | _ -> ()
-*)
-
-let memo = ref []
-        (* Contains the list of saved abbreviation expansions. *)
-
-let cleanup_abbrev () =
-        (* Remove all memorized abbreviation expansions. *)
-  List.iter (fun abbr -> abbr := Mnil) !memo;
-  memo := []
-
-let memorize_abbrev mem priv path v v' =
-        (* Memorize the expansion of an abbreviation. *)
-  mem := Mcons (priv, path, v, v', !mem);
-  (* check_expans [] v; *)
-  memo := mem :: !memo
-
-let rec forget_abbrev_rec mem path =
-  match mem with
-    Mnil ->
-      assert false
-  | Mcons (_, path', _, _, rem) when Path.same path path' ->
-      rem
-  | Mcons (priv, path', v, v', rem) ->
-      Mcons (priv, path', v, v', forget_abbrev_rec rem path)
-  | Mlink mem' ->
-      mem' := forget_abbrev_rec !mem' path;
-      raise Exit
-
-let forget_abbrev mem path =
-  try mem := forget_abbrev_rec !mem path with Exit -> ()
-
-(* debug: check for invalid abbreviations
-let rec check_abbrev_rec = function
-    Mnil -> true
-  | Mcons (_, ty1, ty2, rem) ->
-      repr ty1 != repr ty2
-  | Mlink mem' ->
-      check_abbrev_rec !mem'
-
-let check_memorized_abbrevs () =
-  List.for_all (fun mem -> check_abbrev_rec !mem) !memo
-*)
-
-                  (**********************************)
-                  (*  Utilities for labels          *)
-                  (**********************************)
-
-let is_optional = function Optional _ -> true | _ -> false
-
-let label_name = function
-    Nolabel -> ""
-  | Labelled s
-  | Optional s -> s
-
-let prefixed_label_name = function
-    Nolabel -> ""
-  | Labelled s -> "~" ^ s
-  | Optional s -> "?" ^ s
-
-let rec extract_label_aux hd l = function
-    [] -> raise Not_found
-  | (l',t as p) :: ls ->
-      if label_name l' = l then (l', t, List.rev hd, ls)
-      else extract_label_aux (p::hd) l ls
-
-let extract_label l ls = extract_label_aux [] l ls
-
-
-                  (**********************************)
-                  (*  Utilities for backtracking    *)
-                  (**********************************)
-
-let undo_change = function
-    Ctype  (ty, desc) -> ty.desc <- desc
-  | Ccompress  (ty, desc, _) -> ty.desc <- desc
-  | Clevel (ty, level) -> ty.level <- level
-  | Cname  (r, v) -> r := v
-  | Crow   (r, v) -> r := v
-  | Ckind  (r, v) -> r := v
-  | Ccommu (r, v) -> r := v
-  | Cuniv  (r, v) -> r := v
-  | Ctypeset (r, v) -> r := v
-
-type snapshot = changes ref * int
-let last_snapshot = ref 0
-
-let log_type ty =
-  if ty.id <= !last_snapshot then log_change (Ctype (ty, ty.desc))
-let link_type ty ty' =
-  log_type ty;
-  let desc = ty.desc in
-  ty.desc <- Tlink ty';
-  (* Name is a user-supplied name for this unification variable (obtained
-   * through a type annotation for instance). *)
-  match desc, ty'.desc with
-    Tvar name, Tvar name' ->
-      begin match name, name' with
-      | Some _, None ->  log_type ty'; ty'.desc <- Tvar name
-      | None, Some _ ->  ()
-      | Some _, Some _ ->
-          if ty.level < ty'.level then (log_type ty'; ty'.desc <- Tvar name)
-      | None, None   ->  ()
-      end
-  | _ -> ()
-  (* ; assert (check_memorized_abbrevs ()) *)
-  (*  ; check_expans [] ty' *)
-let set_level ty level =
-  if ty.id <= !last_snapshot then log_change (Clevel (ty, ty.level));
-  ty.level <- level
-let set_univar rty ty =
-  log_change (Cuniv (rty, !rty)); rty := Some ty
-let set_name nm v =
-  log_change (Cname (nm, !nm)); nm := v
-let set_row_field e v =
-  log_change (Crow (e, !e)); e := Some v
-let set_kind rk k =
-  log_change (Ckind (rk, !rk)); rk := Some k
-let set_commu rc c =
-  log_change (Ccommu (rc, !rc)); rc := c
-let set_typeset rs s =
-  log_change (Ctypeset (rs, !rs)); rs := s
-
-let snapshot () =
-  let old = !last_snapshot in
-  last_snapshot := !new_id;
-  match Weak.get trail 0 with Some r -> (r, old)
-  | None ->
-      let r = ref Unchanged in
-      Weak.set trail 0 (Some r);
-      (r, old)
-
-let rec rev_log accu = function
-    Unchanged -> accu
-  | Invalid -> assert false
-  | Change (ch, next) ->
-      let d = !next in
-      next := Invalid;
-      rev_log (ch::accu) d
-
-let backtrack (changes, old) =
-  match !changes with
-    Unchanged -> last_snapshot := old
-  | Invalid -> failwith "Btype.backtrack"
-  | Change _ as change ->
-      cleanup_abbrev ();
-      let backlog = rev_log [] change in
-      List.iter undo_change backlog;
-      changes := Unchanged;
-      last_snapshot := old;
-      Weak.set trail 0 (Some changes)
-
-let rec rev_compress_log log r =
-  match !r with
-    Unchanged | Invalid ->
-      log
-  | Change (Ccompress _, next) ->
-      rev_compress_log (r::log) next
-  | Change (_, next) ->
-      rev_compress_log log next
-
-let undo_compress (changes, _old) =
-  match !changes with
-    Unchanged
-  | Invalid -> ()
-  | Change _ ->
-      let log = rev_compress_log [] changes in
-      List.iter
-        (fun r -> match !r with
-          Change (Ccompress (ty, desc, d), next) when ty.desc == d ->
-            ty.desc <- desc; r := !next
-        | _ -> ())
-        log
diff --git a/src/compiler-libs-406/builtin_attributes.ml b/src/compiler-libs-406/builtin_attributes.ml
deleted file mode 100755
index 84503189..00000000
--- a/src/compiler-libs-406/builtin_attributes.ml
+++ /dev/null
@@ -1,206 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Asttypes
-open Parsetree
-
-let string_of_cst = function
-  | Pconst_string(s, _) -> Some s
-  | _ -> None
-
-let string_of_payload = function
-  | PStr[{pstr_desc=Pstr_eval({pexp_desc=Pexp_constant c},_)}] ->
-      string_of_cst c
-  | _ -> None
-
-let string_of_opt_payload p =
-  match string_of_payload p with
-  | Some s -> s
-  | None -> ""
-
-let rec error_of_extension ext =
-  match ext with
-  | ({txt = ("ocaml.error"|"error") as txt; loc}, p) ->
-    let rec sub_from inner =
-      match inner with
-      | {pstr_desc=Pstr_extension (ext, _)} :: rest ->
-          error_of_extension ext :: sub_from rest
-      | _ :: rest ->
-          (Location.errorf ~loc
-             "Invalid syntax for sub-error of extension '%s'." txt) ::
-            sub_from rest
-      | [] -> []
-    in
-    begin match p with
-    | PStr [] -> raise Location.Already_displayed_error
-    | PStr({pstr_desc=Pstr_eval
-              ({pexp_desc=Pexp_constant(Pconst_string(msg,_))}, _)}::
-           {pstr_desc=Pstr_eval
-              ({pexp_desc=Pexp_constant(Pconst_string(if_highlight,_))}, _)}::
-           inner) ->
-        Location.error ~loc ~if_highlight ~sub:(sub_from inner) msg
-    | PStr({pstr_desc=Pstr_eval
-              ({pexp_desc=Pexp_constant(Pconst_string(msg,_))}, _)}::inner) ->
-        Location.error ~loc ~sub:(sub_from inner) msg
-    | _ -> Location.errorf ~loc "Invalid syntax for extension '%s'." txt
-    end
-  | ({txt; loc}, _) ->
-      Location.errorf ~loc "Uninterpreted extension '%s'." txt
-
-let cat s1 s2 =
-  if s2 = "" then s1 else
-    s1 ^ "\n" ^ s2
-
-let rec deprecated_of_attrs = function
-  | [] -> None
-  | ({txt = "ocaml.deprecated"|"deprecated"; _}, p) :: _ ->
-      Some (string_of_opt_payload p)
-  | _ :: tl -> deprecated_of_attrs tl
-
-let check_deprecated loc attrs s =
-  match deprecated_of_attrs attrs with
-  | None -> ()
-  | Some txt -> Location.deprecated loc (cat s txt)
-
-let check_deprecated_inclusion ~def ~use loc attrs1 attrs2 s =
-  match deprecated_of_attrs attrs1, deprecated_of_attrs attrs2 with
-  | None, _ | Some _, Some _ -> ()
-  | Some txt, None -> Location.deprecated ~def ~use loc (cat s txt)
-
-let rec deprecated_mutable_of_attrs = function
-  | [] -> None
-  | ({txt = "ocaml.deprecated_mutable"|"deprecated_mutable"; _}, p) :: _ ->
-      Some (string_of_opt_payload p)
-  | _ :: tl -> deprecated_mutable_of_attrs tl
-
-let check_deprecated_mutable loc attrs s =
-  match deprecated_mutable_of_attrs attrs with
-  | None -> ()
-  | Some txt ->
-      Location.deprecated loc (Printf.sprintf "mutating field %s" (cat s txt))
-
-let check_deprecated_mutable_inclusion ~def ~use loc attrs1 attrs2 s =
-  match deprecated_mutable_of_attrs attrs1,
-        deprecated_mutable_of_attrs attrs2
-  with
-  | None, _ | Some _, Some _ -> ()
-  | Some txt, None ->
-      Location.deprecated ~def ~use loc
-        (Printf.sprintf "mutating field %s" (cat s txt))
-
-let check_bs_attributes_inclusion = 
-  ref (fun _attrs1 _attrs2 _s -> 
-      None
-    )  
-
-let check_duplicated_labels : (_ -> _ option ) ref = ref (fun _lbls -> 
-  None
-)
-
-let rec deprecated_of_sig = function
-  | {psig_desc = Psig_attribute a} :: tl ->
-      begin match deprecated_of_attrs [a] with
-      | None -> deprecated_of_sig tl
-      | Some _ as r -> r
-      end
-  | _ -> None
-
-
-let rec deprecated_of_str = function
-  | {pstr_desc = Pstr_attribute a} :: tl ->
-      begin match deprecated_of_attrs [a] with
-      | None -> deprecated_of_str tl
-      | Some _ as r -> r
-      end
-  | _ -> None
-
-
-let warning_attribute ?(ppwarning = true) =
-  let process loc txt errflag payload =
-    match string_of_payload payload with
-    | Some s ->
-        begin try Warnings.parse_options errflag s
-        with Arg.Bad _ ->
-          Location.prerr_warning loc
-            (Warnings.Attribute_payload
-               (txt, "Ill-formed list of warnings"))
-        end
-    | None ->
-        Location.prerr_warning loc
-          (Warnings.Attribute_payload
-             (txt, "A single string literal is expected"))
-  in
-  function
-  | ({txt = ("ocaml.warning"|"warning") as txt; loc}, payload) ->
-      process loc txt false payload
-  | ({txt = ("ocaml.warnerror"|"warnerror") as txt; loc}, payload) ->
-      process loc txt true payload
-  | {txt="ocaml.ppwarning"|"ppwarning"},
-    PStr[{pstr_desc=Pstr_eval({pexp_desc=Pexp_constant
-                                   (Pconst_string (s, _))},_);
-          pstr_loc}] when ppwarning ->
-      Location.prerr_warning pstr_loc (Warnings.Preprocessor s)
-  | _ ->
-      ()
-
-let warning_scope ?ppwarning attrs f =
-  let prev = Warnings.backup () in
-  try
-    List.iter (warning_attribute ?ppwarning) (List.rev attrs);
-    let ret = f () in
-    Warnings.restore prev;
-    ret
-  with exn ->
-    Warnings.restore prev;
-    raise exn
-
-
-let warn_on_literal_pattern =
-  List.exists
-    (function
-      | ({txt="ocaml.warn_on_literal_pattern"|"warn_on_literal_pattern"; _}, _)
-        -> true
-      | _ -> false
-    )
-
-let explicit_arity =
-  List.exists
-    (function
-      | ({txt="ocaml.explicit_arity"|"explicit_arity"; _}, _) -> true
-      | _ -> false
-    )
-
-let immediate =
-  List.exists
-    (function
-      | ({txt="ocaml.immediate"|"immediate"; _}, _) -> true
-      | _ -> false
-    )
-
-(* The "ocaml.boxed (default)" and "ocaml.unboxed (default)"
-   attributes cannot be input by the user, they are added by the
-   compiler when applying the default setting. This is done to record
-   in the .cmi the default used by the compiler when compiling the
-   source file because the default can change between compiler
-   invocations. *)
-
-let check l (x, _) = List.mem x.txt l
-
-let has_unboxed attr =
-  List.exists (check ["ocaml.unboxed"; "unboxed"])
-    attr
-
-let has_boxed attr =
-  List.exists (check ["ocaml.boxed"; "boxed"]) attr
diff --git a/src/compiler-libs-406/builtin_attributes.mli b/src/compiler-libs-406/builtin_attributes.mli
deleted file mode 100755
index 7282dbbe..00000000
--- a/src/compiler-libs-406/builtin_attributes.mli
+++ /dev/null
@@ -1,84 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                         Alain Frisch, LexiFi                           *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Support for some of the builtin attributes:
-
-   ocaml.deprecated
-   ocaml.error
-   ocaml.ppwarning
-   ocaml.warning
-   ocaml.warnerror
-   ocaml.explicit_arity (for camlp4/camlp5)
-   ocaml.warn_on_literal_pattern
-   ocaml.deprecated_mutable
-   ocaml.immediate
-   ocaml.boxed / ocaml.unboxed
-*)
-
-
-val check_deprecated: Location.t -> Parsetree.attributes -> string -> unit
-val check_deprecated_inclusion:
-  def:Location.t -> use:Location.t -> Location.t -> Parsetree.attributes ->
-  Parsetree.attributes -> string -> unit
-val deprecated_of_attrs: Parsetree.attributes -> string option
-val deprecated_of_sig: Parsetree.signature -> string option
-val deprecated_of_str: Parsetree.structure -> string option
-
-val check_deprecated_mutable:
-    Location.t -> Parsetree.attributes -> string -> unit
-val check_deprecated_mutable_inclusion:
-  def:Location.t -> use:Location.t -> Location.t -> Parsetree.attributes ->
-  Parsetree.attributes -> string -> unit
-
-val check_bs_attributes_inclusion:
-  (Parsetree.attributes ->
-  Parsetree.attributes -> string -> (string*string) option ) ref
-
-val check_duplicated_labels: 
-  (Parsetree.label_declaration list ->
-    string Asttypes.loc option
-  ) ref    
-val error_of_extension: Parsetree.extension -> Location.error
-
-val warning_attribute: ?ppwarning:bool -> Parsetree.attribute -> unit
-  (** Apply warning settings from the specified attribute.
-      "ocaml.warning"/"ocaml.warnerror" (and variants without the prefix)
-      are processed and other attributes are ignored.
-
-      Also implement ocaml.ppwarning (unless ~ppwarning:false is
-      passed).
-  *)
-
-val warning_scope:
-  ?ppwarning:bool ->
-  Parsetree.attributes -> (unit -> 'a) -> 'a
-  (** Execute a function in a new scope for warning settings.  This
-      means that the effect of any call to [warning_attribute] during
-      the execution of this function will be discarded after
-      execution.
-
-      The function also takes a list of attributes which are processed
-      with [warning_attribute] in the fresh scope before the function
-      is executed.
-  *)
-
-val warn_on_literal_pattern: Parsetree.attributes -> bool
-val explicit_arity: Parsetree.attributes -> bool
-
-
-val immediate: Parsetree.attributes -> bool
-
-val has_unboxed: Parsetree.attributes -> bool
-val has_boxed: Parsetree.attributes -> bool
diff --git a/src/compiler-libs-406/clflags.ml b/src/compiler-libs-406/clflags.ml
deleted file mode 100644
index 1385d41c..00000000
--- a/src/compiler-libs-406/clflags.ml
+++ /dev/null
@@ -1,71 +0,0 @@
-
-
-
-
-let  output_name = ref (None : string option) (* -o *)
-and include_dirs = ref ([] : string list)(* -I *)
-and debug = ref false                   (* -g *)
-and fast = ref false                    (* -unsafe *)
-
-and nopervasives = ref false            (* -nopervasives *)
-and preprocessor = ref(None : string option) (* -pp *)
-and all_ppx = ref ([] : string list)        (* -ppx *)
-let annotations = ref false             (* -annot *)
-let binary_annotations = ref false      (* -annot *)
-and noassert = ref false                (* -noassert *)
-and verbose = ref false                 (* -verbose *)
-and open_modules = ref []               (* -open *)
-and principal = ref false               (* -principal *)
-and real_paths = ref true               (* -short-paths *)
-and applicative_functors = ref true     (* -no-app-funct *)
-and error_size = ref 500                (* -error-size *)
-and transparent_modules = ref false     (* -trans-mod *)
-let dump_source = ref false             (* -dsource *)
-let dump_parsetree = ref false          (* -dparsetree *)
-and dump_typedtree = ref false          (* -dtypedtree *)
-and dump_rawlambda = ref false          (* -drawlambda *)
-and dump_lambda = ref false             (* -dlambda *)
-
-
-let dont_write_files = ref false        (* set to true under ocamldoc *)
-
-
-let reset_dump_state () = begin 
-  dump_source := false;
-  dump_parsetree := false;
-  dump_typedtree := false;
-  dump_rawlambda := false
-end
-
-
-
-
-let keep_docs = ref false              (* -keep-docs *)
-let keep_locs = ref true               (* -keep-locs *)
-
-
-
-
-let parse_color_setting = function
-  | "auto" -> Some Misc.Color.Auto
-  | "always" -> Some Misc.Color.Always
-  | "never" -> Some Misc.Color.Never
-  | _ -> None
-let color = ref None ;; (* -color *)
-
-let unboxed_types = ref false
-
-
-
-
-type mli_status =  Mli_exists | Mli_non_exists
-let assume_no_mli = ref Mli_non_exists
-let bs_vscode =
-    try ignore @@ Sys.getenv "BS_VSCODE" ; true with _ -> false
-    (* We get it from environment variable mostly due to
-       we don't want to rebuild when flip on or off
-    *)
-let dont_record_crc_unit : string option ref = ref None
-let bs_gentype = ref None
-let no_assert_false = ref false
-let dump_location = ref true
diff --git a/src/compiler-libs-406/clflags.mli b/src/compiler-libs-406/clflags.mli
deleted file mode 100644
index b0859b4a..00000000
--- a/src/compiler-libs-406/clflags.mli
+++ /dev/null
@@ -1,45 +0,0 @@
-val output_name : string option ref
-val include_dirs : string list ref
-
-val debug : bool ref
-val fast : bool ref
-
-val nopervasives : bool ref
-val open_modules : string list ref
-val preprocessor : string option ref
-val all_ppx : string list ref
-val annotations : bool ref
-val binary_annotations : bool ref
-val noassert : bool ref
-val verbose : bool ref
-val principal : bool ref
-val real_paths : bool ref
-val applicative_functors : bool ref
-val error_size : int ref
-val transparent_modules : bool ref
-val dump_source : bool ref
-val dump_parsetree : bool ref
-val dump_typedtree : bool ref
-val dump_rawlambda : bool ref
-val dump_lambda : bool ref
-val dont_write_files : bool ref
-val keep_docs : bool ref
-val keep_locs : bool ref
-
-
-val parse_color_setting : string -> Misc.Color.setting option
-val color : Misc.Color.setting option ref
-
-val unboxed_types : bool ref
-
-val reset_dump_state: unit -> unit 
-
-
-type mli_status =  Mli_exists | Mli_non_exists
-val assume_no_mli : mli_status ref
-val bs_vscode : bool
-val dont_record_crc_unit : string option ref
-val bs_gentype : string option ref
-val no_assert_false : bool ref
-val dump_location : bool ref
-
diff --git a/src/compiler-libs-406/cmi_format.ml b/src/compiler-libs-406/cmi_format.ml
deleted file mode 100644
index 1b21d362..00000000
--- a/src/compiler-libs-406/cmi_format.ml
+++ /dev/null
@@ -1,141 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                   Fabrice Le Fessant, INRIA Saclay                     *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-type pers_flags =
-  | Rectypes
-  | Deprecated of string
-  | Opaque
-  | Unsafe_string
-
-type error =
-    Not_an_interface of string
-  | Wrong_version_interface of string * string
-  | Corrupted_interface of string
-
-exception Error of error
-
-type cmi_infos = {
-    cmi_name : string;
-    cmi_sign : Types.signature_item list;
-    cmi_crcs : (string * Digest.t option) list;
-    cmi_flags : pers_flags list;
-}
-
-let input_cmi ic =
-  let (name, sign) = input_value ic in
-  let crcs = input_value ic in
-  let flags = input_value ic in
-  {
-      cmi_name = name;
-      cmi_sign = sign;
-      cmi_crcs = crcs;
-      cmi_flags = flags;
-    }
-
-let read_cmi filename =
-  let ic = open_in_bin filename in
-  try
-    let buffer =
-      really_input_string ic (String.length Config.cmi_magic_number)
-    in
-    if buffer <> Config.cmi_magic_number then begin
-      close_in ic;
-      let pre_len = String.length Config.cmi_magic_number - 3 in
-      if String.sub buffer 0 pre_len
-          = String.sub Config.cmi_magic_number 0 pre_len then
-      begin
-        let msg =
-          if buffer < Config.cmi_magic_number then "an older" else "a newer" in
-        raise (Error (Wrong_version_interface (filename, msg)))
-      end else begin
-        raise(Error(Not_an_interface filename))
-      end
-    end;
-    let cmi = input_cmi ic in
-    close_in ic;
-    cmi
-  with End_of_file | Failure _ ->
-      close_in ic;
-      raise(Error(Corrupted_interface(filename)))
-    | Error e ->
-      close_in ic;
-      raise (Error e)
-
-let output_cmi filename oc cmi =
-(* beware: the provided signature must have been substituted for saving *)
-  output_string oc Config.cmi_magic_number;
-  output_value oc (cmi.cmi_name, cmi.cmi_sign);
-  flush oc;
-  let crc = Digest.file filename in
-  let crcs = (cmi.cmi_name, Some crc) :: cmi.cmi_crcs in
-  output_value oc crcs;
-  output_value oc cmi.cmi_flags;
-  crc
-
-(* This function is also called by [save_cmt] as cmi_format is subset of 
-       cmt_format, so dont close the channel yet
-*)
-let create_cmi ?check_exists filename (cmi : cmi_infos) =
-  (* beware: the provided signature must have been substituted for saving *)
-  let content = 
-    Config.cmi_magic_number ^ Marshal.to_string  (cmi.cmi_name, cmi.cmi_sign) []
-    (* checkout [output_value] in {!Pervasives} module *)
-  in 
-  let crc = Digest.string content in   
-  let cmi_infos = 
-    if check_exists <> None && Sys.file_exists filename then 
-      Some (read_cmi filename)
-    else None in   
-  match cmi_infos with 
-  | Some {cmi_name = _; cmi_sign = _; cmi_crcs = (old_name, Some old_crc)::rest ; cmi_flags} 
-    (* TODO: design the cmi format so that we don't need read the whole cmi *)
-    when 
-      cmi.cmi_name = old_name &&
-      crc = old_crc &&
-      cmi.cmi_crcs = rest &&
-      cmi_flags = cmi.cmi_flags -> 
-      crc 
-  | _ -> 
-      let crcs = (cmi.cmi_name, Some crc) :: cmi.cmi_crcs in
-      let oc = open_out_bin filename in 
-      output_string oc content;
-      output_value oc crcs;
-      output_value oc cmi.cmi_flags;
-      close_out oc; 
-      crc
-  
-(* Error report *)
-
-open Format
-
-let report_error ppf = function
-  | Not_an_interface filename ->
-      fprintf ppf "%a@ is not a compiled interface"
-        Location.print_filename filename
-  | Wrong_version_interface (filename, older_newer) ->
-      fprintf ppf
-        "%a@ is not a compiled interface for this version of OCaml.@.\
-         It seems to be for %s version of OCaml."
-        Location.print_filename filename older_newer
-  | Corrupted_interface filename ->
-      fprintf ppf "Corrupted compiled interface@ %a"
-        Location.print_filename filename
-
-let () =
-  Location.register_error_of_exn
-    (function
-      | Error err -> Some (Location.error_of_printer_file report_error err)
-      | _ -> None
-    )
diff --git a/src/compiler-libs-406/cmi_format.mli b/src/compiler-libs-406/cmi_format.mli
deleted file mode 100644
index 9385deb5..00000000
--- a/src/compiler-libs-406/cmi_format.mli
+++ /dev/null
@@ -1,51 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                   Fabrice Le Fessant, INRIA Saclay                     *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-type pers_flags =
-  | Rectypes
-  | Deprecated of string
-  | Opaque
-  | Unsafe_string
-
-type cmi_infos = {
-    cmi_name : string;
-    cmi_sign : Types.signature_item list;
-    cmi_crcs : (string * Digest.t option) list;
-    cmi_flags : pers_flags list;
-}
-
-(* write the magic + the cmi information *)
-val output_cmi : string -> out_channel -> cmi_infos -> Digest.t
-
-val create_cmi : ?check_exists:unit -> string -> cmi_infos -> Digest.t
-
-(* read the cmi information (the magic is supposed to have already been read) *)
-val input_cmi : in_channel -> cmi_infos
-
-(* read a cmi from a filename, checking the magic *)
-val read_cmi : string -> cmi_infos
-
-(* Error report *)
-
-type error =
-    Not_an_interface of string
-  | Wrong_version_interface of string * string
-  | Corrupted_interface of string
-
-exception Error of error
-
-open Format
-
-val report_error: formatter -> error -> unit
diff --git a/src/compiler-libs-406/cmt_format.ml b/src/compiler-libs-406/cmt_format.ml
deleted file mode 100644
index 911111c1..00000000
--- a/src/compiler-libs-406/cmt_format.ml
+++ /dev/null
@@ -1,197 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                   Fabrice Le Fessant, INRIA Saclay                     *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Cmi_format
-open Typedtree
-
-(* Note that in Typerex, there is an awful hack to save a cmt file
-   together with the interface file that was generated by ocaml (this
-   is because the installed version of ocaml might differ from the one
-   integrated in Typerex).
-*)
-
-
-
-let read_magic_number ic =
-  let len_magic_number = String.length Config.cmt_magic_number in
-  really_input_string ic len_magic_number
-
-type binary_annots =
-  | Packed of Types.signature * string list
-  | Implementation of structure
-  | Interface of signature
-  | Partial_implementation of binary_part array
-  | Partial_interface of binary_part array
-
-and binary_part =
-| Partial_structure of structure
-| Partial_structure_item of structure_item
-| Partial_expression of expression
-| Partial_pattern of pattern
-| Partial_class_expr of unit
-| Partial_signature of signature
-| Partial_signature_item of signature_item
-| Partial_module_type of module_type
-
-type cmt_infos = {
-  cmt_modname : string;
-  cmt_annots : binary_annots;
-  cmt_value_dependencies :
-    (Types.value_description * Types.value_description) list;
-  cmt_comments : (string * Location.t) list;
-  cmt_args : string array;
-  cmt_sourcefile : string option;
-  cmt_builddir : string;
-  cmt_loadpath : string list;
-  cmt_source_digest : Digest.t option;
-  cmt_initial_env : Env.t;
-  cmt_imports : (string * Digest.t option) list;
-  cmt_interface_digest : Digest.t option;
-  cmt_use_summaries : bool;
-}
-
-type error =
-    Not_a_typedtree of string
-
-let need_to_clear_env =
-  try ignore (Sys.getenv "OCAML_BINANNOT_WITHENV"); false
-  with Not_found -> true
-
-let keep_only_summary = Env.keep_only_summary
-
-open Tast_mapper
-
-let cenv =
-  {Tast_mapper.default with env = fun _sub env -> keep_only_summary env}
-
-let clear_part = function
-  | Partial_structure s -> Partial_structure (cenv.structure cenv s)
-  | Partial_structure_item s ->
-      Partial_structure_item (cenv.structure_item cenv s)
-  | Partial_expression e -> Partial_expression (cenv.expr cenv e)
-  | Partial_pattern p -> Partial_pattern (cenv.pat cenv p)
-  | Partial_class_expr () -> assert false
-  | Partial_signature s -> Partial_signature (cenv.signature cenv s)
-  | Partial_signature_item s ->
-      Partial_signature_item (cenv.signature_item cenv s)
-  | Partial_module_type s -> Partial_module_type (cenv.module_type cenv s)
-
-let clear_env binary_annots =
-  if need_to_clear_env then
-    match binary_annots with
-    | Implementation s -> Implementation (cenv.structure cenv s)
-    | Interface s -> Interface (cenv.signature cenv s)
-    | Packed _ -> binary_annots
-    | Partial_implementation array ->
-        Partial_implementation (Array.map clear_part array)
-    | Partial_interface array ->
-        Partial_interface (Array.map clear_part array)
-
-  else binary_annots
-
-exception Error of error
-
-let input_cmt ic = (input_value ic : cmt_infos)
-
-let output_cmt oc cmt =
-  output_string oc Config.cmt_magic_number;
-  output_value oc (cmt : cmt_infos)
-
-let read filename =
-(*  Printf.fprintf stderr "Cmt_format.read %s\n%!" filename; *)
-  let ic = open_in_bin filename in
-  try
-    let magic_number = read_magic_number ic in
-    let cmi, cmt =
-      if magic_number = Config.cmt_magic_number then
-        None, Some (input_cmt ic)
-      else if magic_number = Config.cmi_magic_number then
-        let cmi = Cmi_format.input_cmi ic in
-        let cmt = try
-                    let magic_number = read_magic_number ic in
-                    if magic_number = Config.cmt_magic_number then
-                      let cmt = input_cmt ic in
-                      Some cmt
-                    else None
-          with _ -> None
-        in
-        Some cmi, cmt
-      else
-        raise(Cmi_format.Error(Cmi_format.Not_an_interface filename))
-    in
-    close_in ic;
-(*    Printf.fprintf stderr "Cmt_format.read done\n%!"; *)
-    cmi, cmt
-  with e ->
-    close_in ic;
-    raise e
-
-let read_cmt filename =
-  match read filename with
-      _, None -> raise (Error (Not_a_typedtree filename))
-    | _, Some cmt -> cmt
-
-let read_cmi filename =
-  match read filename with
-      None, _ ->
-        raise (Cmi_format.Error (Cmi_format.Not_an_interface filename))
-    | Some cmi, _ -> cmi
-
-let saved_types = ref []
-let value_deps = ref []
-
-let clear () =
-  saved_types := [];
-  value_deps := []
-
-let add_saved_type b = saved_types := b :: !saved_types
-let get_saved_types () = !saved_types
-let set_saved_types l = saved_types := l
-
-let record_value_dependency vd1 vd2 =
-  if vd1.Types.val_loc <> vd2.Types.val_loc then
-    value_deps := (vd1, vd2) :: !value_deps
-
-let save_cmt filename modname binary_annots sourcefile initial_env cmi =
-  if !Clflags.binary_annotations then begin
-    (if !Config.bs_only then Misc.output_to_bin_file_directly else 
-    Misc.output_to_file_via_temporary
-       ~mode:[Open_binary] ) filename
-       (fun temp_file_name oc ->
-         let this_crc =
-           match cmi with
-           | None -> None
-           | Some cmi -> Some (output_cmi temp_file_name oc cmi)
-         in
-         let source_digest = Misc.may_map Digest.file sourcefile in
-         let cmt = {
-           cmt_modname = modname;
-           cmt_annots = clear_env binary_annots;
-           cmt_value_dependencies = !value_deps;
-           cmt_comments = Lexer.comments ();
-           cmt_args = Sys.argv;
-           cmt_sourcefile = sourcefile;
-           cmt_builddir =  Sys.getcwd ();
-           cmt_loadpath = !Config.load_path;
-           cmt_source_digest = source_digest;
-           cmt_initial_env = if need_to_clear_env then
-               keep_only_summary initial_env else initial_env;
-           cmt_imports = List.sort compare (Env.imports ());
-           cmt_interface_digest = this_crc;
-           cmt_use_summaries = need_to_clear_env;
-         } in
-         output_cmt oc cmt)
-  end;
-  clear ()
diff --git a/src/compiler-libs-406/cmt_format.mli b/src/compiler-libs-406/cmt_format.mli
deleted file mode 100644
index 6daf6433..00000000
--- a/src/compiler-libs-406/cmt_format.mli
+++ /dev/null
@@ -1,121 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                   Fabrice Le Fessant, INRIA Saclay                     *)
-(*                                                                        *)
-(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** cmt and cmti files format. *)
-
-(** The layout of a cmt file is as follows:
-      <cmt> := \{<cmi>\} <cmt magic> \{cmt infos\} \{<source info>\}
-    where <cmi> is the cmi file format:
-      <cmi> := <cmi magic> <cmi info>.
-    More precisely, the optional <cmi> part must be present if and only if
-    the file is:
-    - a cmti, or
-    - a cmt, for a ml file which has no corresponding mli (hence no
-    corresponding cmti).
-
-    Thus, we provide a common reading function for cmi and cmt(i)
-    files which returns an option for each of the three parts: cmi
-    info, cmt info, source info. *)
-
-open Typedtree
-
-type binary_annots =
-  | Packed of Types.signature * string list
-  | Implementation of structure
-  | Interface of signature
-  | Partial_implementation of binary_part array
-  | Partial_interface of binary_part array
-
-and binary_part =
-  | Partial_structure of structure
-  | Partial_structure_item of structure_item
-  | Partial_expression of expression
-  | Partial_pattern of pattern
-  | Partial_class_expr of unit
-  | Partial_signature of signature
-  | Partial_signature_item of signature_item
-  | Partial_module_type of module_type
-
-type cmt_infos = {
-  cmt_modname : string;
-  cmt_annots : binary_annots;
-  cmt_value_dependencies :
-    (Types.value_description * Types.value_description) list;
-  cmt_comments : (string * Location.t) list;
-  cmt_args : string array;
-  cmt_sourcefile : string option;
-  cmt_builddir : string;
-  cmt_loadpath : string list;
-  cmt_source_digest : string option;
-  cmt_initial_env : Env.t;
-  cmt_imports : (string * Digest.t option) list;
-  cmt_interface_digest : Digest.t option;
-  cmt_use_summaries : bool;
-}
-
-type error =
-    Not_a_typedtree of string
-
-exception Error of error
-
-(** [read filename] opens filename, and extract both the cmi_infos, if
-    it exists, and the cmt_infos, if it exists. Thus, it can be used
-    with .cmi, .cmt and .cmti files.
-
-    .cmti files always contain a cmi_infos at the beginning. .cmt files
-    only contain a cmi_infos at the beginning if there is no associated
-    .cmti file.
-*)
-val read : string -> Cmi_format.cmi_infos option * cmt_infos option
-
-val read_cmt : string -> cmt_infos
-val read_cmi : string -> Cmi_format.cmi_infos
-
-(** [save_cmt filename modname binary_annots sourcefile initial_env cmi]
-    writes a cmt(i) file.  *)
-val save_cmt :
-  string ->  (* filename.cmt to generate *)
-  string ->  (* module name *)
-  binary_annots ->
-  string option ->  (* source file *)
-  Env.t -> (* initial env *)
-  Cmi_format.cmi_infos option -> (* if a .cmi was generated *)
-  unit
-
-(* Miscellaneous functions *)
-
-val read_magic_number : in_channel -> string
-
-val clear: unit -> unit
-
-val add_saved_type : binary_part -> unit
-val get_saved_types : unit -> binary_part list
-val set_saved_types : binary_part list -> unit
-
-val record_value_dependency:
-  Types.value_description -> Types.value_description -> unit
-
-
-(*
-
-  val is_magic_number : string -> bool
-  val read : in_channel -> Env.cmi_infos option * t
-  val write_magic_number : out_channel -> unit
-  val write : out_channel -> t -> unit
-
-  val find : string list -> string -> string
-  val read_signature : 'a -> string -> Types.signature * 'b list * 'c list
-
-*)
diff --git a/src/compiler-libs-406/config.ml b/src/compiler-libs-406/config.ml
deleted file mode 100644
index e82d154a..00000000
--- a/src/compiler-libs-406/config.ml
+++ /dev/null
@@ -1,42 +0,0 @@
-let version = "4.06.1+BS"
-let standard_library =
-  let (//) = Filename.concat in   
-  Filename.dirname Sys.executable_name // Filename.parent_dir_name //  "lib" // "ocaml"
-let standard_library_default = standard_library
-let syntax_kind = ref `ml
-let bs_only = ref true
-let unsafe_empty_array = ref true
-
-
-and cmi_magic_number = "Caml1999I022"
-
-and ast_impl_magic_number = "Caml1999M022"
-and ast_intf_magic_number = "Caml1999N022"
-and cmt_magic_number = "Caml1999T022"
-
-let load_path = ref ([] : string list)
-
-let interface_suffix = ref ".mli"
-
-
-(* This is normally the same as in obj.ml, but we have to define it
-   separately because it can differ when we're in the middle of a
-   bootstrapping phase. *)
-
-
-
-let default_uncurry = ref false
-
-let print_config oc =
-  let p name valu = Printf.fprintf oc "%s: %s\n" name valu in
-  p "version" version;
-  p "standard_library_default" standard_library_default;
-  p "standard_library" standard_library;
-  (* print the magic number *)
-
-  p "cmi_magic_number" cmi_magic_number;
-  p "ast_impl_magic_number" ast_impl_magic_number;
-  p "ast_intf_magic_number" ast_intf_magic_number;
-  p "cmt_magic_number" cmt_magic_number;
-  flush oc;
-;;
diff --git a/src/compiler-libs-406/config.mli b/src/compiler-libs-406/config.mli
deleted file mode 100644
index 362ca062..00000000
--- a/src/compiler-libs-406/config.mli
+++ /dev/null
@@ -1,50 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* System configuration *)
-
-val version: string
-        (* The current version number of the system *)
-
-val standard_library: string
-        (* The directory containing the standard libraries *)
-
-val syntax_kind : [ `ml | `reason | `rescript ] ref       
-
-val bs_only : bool ref 
-
-val unsafe_empty_array: bool ref 
-
-
-val load_path: string list ref
-        (* Directories in the search path for .cmi and .cmo files *)
-
-val interface_suffix: string ref
-        (* Suffix for interface file names *)
-
-val cmi_magic_number: string
-        (* Magic number for compiled interface files *)
-val ast_intf_magic_number: string
-        (* Magic number for file holding an interface syntax tree *)
-val ast_impl_magic_number: string
-        (* Magic number for file holding an implementation syntax tree *)
-val cmt_magic_number: string
-        (* Magic number for compiled interface files *)
-
-
-val default_uncurry : bool ref 
-val print_config : out_channel -> unit;;
-
-
diff --git a/src/compiler-libs-406/consistbl.ml b/src/compiler-libs-406/consistbl.ml
deleted file mode 100644
index dbba5d1f..00000000
--- a/src/compiler-libs-406/consistbl.ml
+++ /dev/null
@@ -1,66 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 2002 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Consistency tables: for checking consistency of module CRCs *)
-
-type t = (string, Digest.t * string) Hashtbl.t
-
-let create () = Hashtbl.create 13
-
-let clear = Hashtbl.clear
-
-exception Inconsistency of string * string * string
-
-exception Not_available of string
-
-let check tbl name crc source =
-  try
-    let (old_crc, old_source) = Hashtbl.find tbl name in
-    if crc <> old_crc then raise(Inconsistency(name, source, old_source))
-  with Not_found ->
-    Hashtbl.add tbl name (crc, source)
-
-let check_noadd tbl name crc source =
-  try
-    let (old_crc, old_source) = Hashtbl.find tbl name in
-    if crc <> old_crc then raise(Inconsistency(name, source, old_source))
-  with Not_found ->
-    raise (Not_available name)
-
-let set tbl name crc source = Hashtbl.add tbl name (crc, source)
-
-let source tbl name = snd (Hashtbl.find tbl name)
-
-let extract l tbl =
-  let l = List.sort_uniq String.compare l in
-  List.fold_left
-    (fun assc name ->
-       try
-         let (crc, _) = Hashtbl.find tbl name in
-           (name, Some crc) :: assc
-       with Not_found ->
-         (name, None) :: assc)
-    [] l
-
-let filter p tbl =
-  let to_remove = ref [] in
-  Hashtbl.iter
-    (fun name _ ->
-      if not (p name) then to_remove := name :: !to_remove)
-    tbl;
-  List.iter
-    (fun name ->
-       while Hashtbl.mem tbl name do Hashtbl.remove tbl name done)
-    !to_remove
diff --git a/src/compiler-libs-406/consistbl.mli b/src/compiler-libs-406/consistbl.mli
deleted file mode 100644
index c532bddf..00000000
--- a/src/compiler-libs-406/consistbl.mli
+++ /dev/null
@@ -1,62 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 2002 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Consistency tables: for checking consistency of module CRCs *)
-
-type t
-
-val create: unit -> t
-
-val clear: t -> unit
-
-val check: t -> string -> Digest.t -> string -> unit
-      (* [check tbl name crc source]
-           checks consistency of ([name], [crc]) with infos previously
-           stored in [tbl].  If no CRC was previously associated with
-           [name], record ([name], [crc]) in [tbl].
-           [source] is the name of the file from which the information
-           comes from.  This is used for error reporting. *)
-
-val check_noadd: t -> string -> Digest.t -> string -> unit
-      (* Same as [check], but raise [Not_available] if no CRC was previously
-           associated with [name]. *)
-
-val set: t -> string -> Digest.t -> string -> unit
-      (* [set tbl name crc source] forcefully associates [name] with
-         [crc] in [tbl], even if [name] already had a different CRC
-         associated with [name] in [tbl]. *)
-
-val source: t -> string -> string
-      (* [source tbl name] returns the file name associated with [name]
-         if the latter has an associated CRC in [tbl].
-         Raise [Not_found] otherwise. *)
-
-val extract: string list -> t -> (string * Digest.t option) list
-      (* [extract tbl names] returns an associative list mapping each string
-         in [names] to the CRC associated with it in [tbl]. If no CRC is
-         associated with a name then it is mapped to [None]. *)
-
-val filter: (string -> bool) -> t -> unit
-      (* [filter pred tbl] removes from [tbl] table all (name, CRC) pairs
-         such that [pred name] is [false]. *)
-
-exception Inconsistency of string * string * string
-      (* Raised by [check] when a CRC mismatch is detected.
-         First string is the name of the compilation unit.
-         Second string is the source that caused the inconsistency.
-         Third string is the source that set the CRC. *)
-
-exception Not_available of string
-      (* Raised by [check_noadd] when a name doesn't have an associated CRC. *)
diff --git a/src/compiler-libs-406/datarepr.ml b/src/compiler-libs-406/datarepr.ml
deleted file mode 100644
index 9310573e..00000000
--- a/src/compiler-libs-406/datarepr.ml
+++ /dev/null
@@ -1,279 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Compute constructor and label descriptions from type declarations,
-   determining their representation. *)
-
-open Asttypes
-open Types
-open Btype
-
-(* Simplified version of Ctype.free_vars *)
-let free_vars ?(param=false) ty =
-  let ret = ref TypeSet.empty in
-  let rec loop ty =
-    let ty = repr ty in
-    if ty.level >= lowest_level then begin
-      ty.level <- pivot_level - ty.level;
-      match ty.desc with
-      | Tvar _ ->
-          ret := TypeSet.add ty !ret
-      | Tvariant row ->
-          let row = row_repr row in
-          iter_row loop row;
-          if not (static_row row) then begin
-            match row.row_more.desc with
-            | Tvar _ when param -> ret := TypeSet.add ty !ret
-            | _ -> loop row.row_more
-          end
-      (* XXX: What about Tobject ? *)
-      | _ ->
-          iter_type_expr loop ty
-    end
-  in
-  loop ty;
-  unmark_type ty;
-  !ret
-
-let newgenconstr path tyl = newgenty (Tconstr (path, tyl, ref Mnil))
-
-let constructor_existentials cd_args cd_res =
-  let tyl =
-    match cd_args with
-    | Cstr_tuple l -> l
-    | Cstr_record l -> List.map (fun l -> l.ld_type) l
-  in
-  let existentials =
-    match cd_res with
-    | None -> []
-    | Some type_ret ->
-        let arg_vars_set = free_vars (newgenty (Ttuple tyl)) in
-        let res_vars = free_vars type_ret in
-        TypeSet.elements (TypeSet.diff arg_vars_set res_vars)
-  in
-  (tyl, existentials)
-
-let constructor_args priv cd_args cd_res path rep =
-  let tyl, existentials = constructor_existentials cd_args cd_res in
-  match cd_args with
-  | Cstr_tuple l -> existentials, l, None
-  | Cstr_record lbls ->
-      let arg_vars_set = free_vars ~param:true (newgenty (Ttuple tyl)) in
-      let type_params = TypeSet.elements arg_vars_set in
-      let type_unboxed =
-        match rep with
-        | Record_unboxed _ -> unboxed_true_default_false
-        | _ -> unboxed_false_default_false
-      in
-      let tdecl =
-        {
-          type_params;
-          type_arity = List.length type_params;
-          type_kind = Type_record (lbls, rep);
-          type_private = priv;
-          type_manifest = None;
-          type_variance = List.map (fun _ -> Variance.full) type_params;
-          type_newtype_level = None;
-          type_loc = Location.none;
-          type_attributes = [];
-          type_immediate = false;
-          type_unboxed;
-        }
-      in
-      existentials,
-      [ newgenconstr path type_params ],
-      Some tdecl
-
-let internal_optional = "internal.optional"
-  
-let optional_shape : Parsetree.attribute =
-  {txt = internal_optional ; loc = Location.none}, Parsetree.PStr []
-
-let constructor_has_optional_shape ({cstr_attributes = attrs} : constructor_description) =
-  List.exists (fun (x,_) -> x.txt = internal_optional) attrs
-
-
-let constructor_descrs ty_path decl cstrs =
-  let ty_res = newgenconstr ty_path decl.type_params in
-  let num_consts = ref 0 and num_nonconsts = ref 0  and num_normal = ref 0 in
-  List.iter
-    (fun {cd_args; cd_res; _} ->
-      if cd_args = Cstr_tuple [] then incr num_consts else incr num_nonconsts;
-      if cd_res = None then incr num_normal)
-    cstrs;
-  let rec describe_constructors idx_const idx_nonconst = function
-      [] -> []
-    | {cd_id; cd_args; cd_res; cd_loc; cd_attributes} :: rem ->
-        let ty_res =
-          match cd_res with
-          | Some ty_res' -> ty_res'
-          | None -> ty_res
-        in
-        let (tag, descr_rem) =
-          match cd_args with
-          | _ when decl.type_unboxed.unboxed ->
-            assert (rem = []);
-            (Cstr_unboxed, [])
-          | Cstr_tuple [] -> (Cstr_constant idx_const,
-                   describe_constructors (idx_const+1) idx_nonconst rem)
-          | _  -> (Cstr_block idx_nonconst,
-                   describe_constructors idx_const (idx_nonconst+1) rem) in
-        let cstr_name = Ident.name cd_id in
-        let existentials, cstr_args, cstr_inlined =
-          let representation =
-            if decl.type_unboxed.unboxed
-            then Record_unboxed true
-            else Record_inlined {tag = idx_nonconst; name = cstr_name; num_nonconsts = !num_nonconsts}
-          in
-          constructor_args decl.type_private cd_args cd_res
-            (Path.Pdot (ty_path, cstr_name, Path.nopos)) representation
-        in
-        let cstr =
-          { cstr_name;
-            cstr_res = ty_res;
-            cstr_existentials = existentials;
-            cstr_args;
-            cstr_arity = List.length cstr_args;
-            cstr_tag = tag;
-            cstr_consts = !num_consts;
-            cstr_nonconsts = !num_nonconsts;
-            cstr_normal = !num_normal;
-            cstr_private = decl.type_private;
-            cstr_generalized = cd_res <> None;
-            cstr_loc = cd_loc;
-            cstr_attributes = cd_attributes;
-            cstr_inlined;
-          } in
-        (cd_id, cstr) :: descr_rem in
-  let result = describe_constructors 0 0 cstrs in 
-  match result with
-  | (
-    [ ({Ident.name = "None"} as a_id, ({cstr_args = []} as a_descr) )  ;
-      ({Ident.name = "Some"} as b_id, ({ cstr_args = [_]} as b_descr))
-    ] |
-    [ ({Ident.name = "Some"} as a_id, ({cstr_args = [_]} as a_descr) )  ;
-      ({Ident.name = "None"} as b_id, ({ cstr_args = []} as b_descr))
-    ]
-   )
-    ->
-      [
-        (a_id, {a_descr with
-                   cstr_attributes =
-                     optional_shape :: a_descr.cstr_attributes});
-        (b_id, {b_descr with
-                   cstr_attributes =
-                     optional_shape :: b_descr.cstr_attributes
-                  })
-      ]
-  | _ -> result        
-
-let extension_descr path_ext ext =
-  let ty_res =
-    match ext.ext_ret_type with
-        Some type_ret -> type_ret
-      | None -> newgenconstr ext.ext_type_path ext.ext_type_params
-  in
-  let existentials, cstr_args, cstr_inlined =
-    constructor_args ext.ext_private ext.ext_args ext.ext_ret_type
-      path_ext Record_extension
-  in
-    { cstr_name = Path.last path_ext;
-      cstr_res = ty_res;
-      cstr_existentials = existentials;
-      cstr_args;
-      cstr_arity = List.length cstr_args;
-      cstr_tag = Cstr_extension(path_ext, cstr_args = []);
-      cstr_consts = -1;
-      cstr_nonconsts = -1;
-      cstr_private = ext.ext_private;
-      cstr_normal = -1;
-      cstr_generalized = ext.ext_ret_type <> None;
-      cstr_loc = ext.ext_loc;
-      cstr_attributes = ext.ext_attributes;
-      cstr_inlined;
-    }
-
-let none = {desc = Ttuple []; level = -1; id = -1}
-                                        (* Clearly ill-formed type *)
-let dummy_label =
-  { lbl_name = ""; lbl_res = none; lbl_arg = none; lbl_mut = Immutable;
-    lbl_pos = (-1); lbl_all = [||]; lbl_repres = Record_regular;
-    lbl_private = Public;
-    lbl_loc = Location.none;
-    lbl_attributes = [];
-  }
-
-let label_descrs ty_res lbls repres priv =
-  let all_labels = Array.make (List.length lbls) dummy_label in
-  let rec describe_labels num = function
-      [] -> []
-    | l :: rest ->
-        let lbl =
-          { lbl_name = Ident.name l.ld_id;
-            lbl_res = ty_res;
-            lbl_arg = l.ld_type;
-            lbl_mut = l.ld_mutable;
-            lbl_pos = num;
-            lbl_all = all_labels;
-            lbl_repres = repres;
-            lbl_private = priv;
-            lbl_loc = l.ld_loc;
-            lbl_attributes = l.ld_attributes;
-          } in
-        all_labels.(num) <- lbl;
-        (l.ld_id, lbl) :: describe_labels (num+1) rest in
-  describe_labels 0 lbls
-
-exception Constr_not_found
-
-let rec find_constr tag num_const num_nonconst = function
-    [] ->
-      raise Constr_not_found
-  | {cd_args = Cstr_tuple []; _} as c  :: rem ->
-      if Types.equal_tag tag  (Cstr_constant num_const)
-      then c
-      else find_constr tag (num_const + 1) num_nonconst rem
-  | c :: rem ->
-      if Types.equal_tag tag (Cstr_block num_nonconst) || tag = Cstr_unboxed
-      then c
-      else find_constr tag num_const (num_nonconst + 1) rem
-
-let find_constr_by_tag tag cstrlist =
-  find_constr tag 0 0 cstrlist
-
-let constructors_of_type ty_path decl =
-  match decl.type_kind with
-  | Type_variant cstrs -> constructor_descrs ty_path decl cstrs
-  | Type_record _ | Type_abstract | Type_open -> []
-
-let labels_of_type ty_path decl =
-  match decl.type_kind with
-  | Type_record(labels, rep) ->
-      label_descrs (newgenconstr ty_path decl.type_params)
-        labels rep decl.type_private
-  | Type_variant _ | Type_abstract | Type_open -> []
-
-(* Set row_name in Env, cf. GPR#1204/1329 *)
-let set_row_name decl path =
-  match decl.type_manifest with
-    None -> ()
-  | Some ty ->
-      let ty = repr ty in
-      match ty.desc with
-        Tvariant row when static_row row ->
-          let row = {(row_repr row) with
-                     row_name = Some (path, decl.type_params)} in
-          ty.desc <- Tvariant row
-      | _ -> ()
diff --git a/src/compiler-libs-406/datarepr.mli b/src/compiler-libs-406/datarepr.mli
deleted file mode 100644
index f6bc50f0..00000000
--- a/src/compiler-libs-406/datarepr.mli
+++ /dev/null
@@ -1,51 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Compute constructor and label descriptions from type declarations,
-   determining their representation. *)
-
-open Types
-
-val constructor_has_optional_shape:
-  Types.constructor_description -> bool
-
-val extension_descr:
-  Path.t -> extension_constructor -> constructor_description
-
-val labels_of_type:
-  Path.t -> type_declaration ->
-  (Ident.t * label_description) list
-val constructors_of_type:
-  Path.t -> type_declaration ->
-  (Ident.t * constructor_description) list
-
-
-exception Constr_not_found
-
-val find_constr_by_tag:
-  constructor_tag -> constructor_declaration list ->
-    constructor_declaration
-
-val constructor_existentials :
-    constructor_arguments -> type_expr option -> type_expr list * type_expr list
-(** Takes [cd_args] and [cd_res] from a [constructor_declaration] and
-    returns:
-    - the types of the constructor's arguments
-    - the existential variables introduced by the constructor
- *)
-
-
-(* Set the polymorphic variant row_name field *)
-val set_row_name : type_declaration -> Path.t -> unit
diff --git a/src/compiler-libs-406/docstrings.ml b/src/compiler-libs-406/docstrings.ml
deleted file mode 100644
index 5de6d4d4..00000000
--- a/src/compiler-libs-406/docstrings.ml
+++ /dev/null
@@ -1,343 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                               Leo White                                *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Location
-
-(* Docstrings *)
-
-(* A docstring is "attached" if it has been inserted in the AST. This
-   is used for generating unexpected docstring warnings. *)
-type ds_attached =
-  | Unattached   (* Not yet attached anything.*)
-  | Info         (* Attached to a field or constructor. *)
-  | Docs         (* Attached to an item or as floating text. *)
-
-(* A docstring is "associated" with an item if there are no blank lines between
-   them. This is used for generating docstring ambiguity warnings. *)
-type ds_associated =
-  | Zero             (* Not associated with an item *)
-  | One              (* Associated with one item *)
-  | Many             (* Associated with multiple items (ambiguity) *)
-
-type docstring =
-  { ds_body: string;
-    ds_loc: Location.t;
-    mutable ds_attached: ds_attached;
-    mutable ds_associated: ds_associated; }
-
-(* List of docstrings *)
-
-let docstrings : docstring list ref = ref []
-
-(* Warn for unused and ambiguous docstrings *)
-
-let warn_bad_docstrings () =
-  if Warnings.is_active (Warnings.Bad_docstring true) then begin
-    List.iter
-      (fun ds ->
-         match ds.ds_attached with
-         | Info -> ()
-         | Unattached ->
-           prerr_warning ds.ds_loc (Warnings.Bad_docstring true)
-         | Docs ->
-             match ds.ds_associated with
-             | Zero | One -> ()
-             | Many ->
-               prerr_warning ds.ds_loc (Warnings.Bad_docstring false))
-      (List.rev !docstrings)
-end
-
-(* Docstring constructors and destructors *)
-
-let docstring body loc =
-  let ds =
-    { ds_body = body;
-      ds_loc = loc;
-      ds_attached = Unattached;
-      ds_associated = Zero; }
-  in
-  ds
-
-let register ds =
-  docstrings := ds :: !docstrings
-
-let docstring_body ds = ds.ds_body
-
-let docstring_loc ds = ds.ds_loc
-
-(* Docstrings attached to items *)
-
-type docs =
-  { docs_pre: docstring option;
-    docs_post: docstring option; }
-
-let empty_docs = { docs_pre = None; docs_post = None }
-
-let doc_loc = {txt = "ocaml.doc"; loc = Location.none}
-
-let docs_attr ds =
-  let open Parsetree in
-  let exp =
-    { pexp_desc = Pexp_constant (Pconst_string(ds.ds_body, None));
-      pexp_loc = ds.ds_loc;
-      pexp_attributes = []; }
-  in
-  let item =
-    { pstr_desc = Pstr_eval (exp, []); pstr_loc = exp.pexp_loc }
-  in
-    (doc_loc, PStr [item])
-
-let add_docs_attrs docs attrs =
-  let attrs =
-    match docs.docs_pre with
-    | None | Some { ds_body=""; _ } -> attrs
-    | Some ds -> docs_attr ds :: attrs
-  in
-  let attrs =
-    match docs.docs_post with
-    | None | Some { ds_body=""; _ } -> attrs
-    | Some ds -> attrs @ [docs_attr ds]
-  in
-  attrs
-
-(* Docstrings attached to constructors or fields *)
-
-type info = docstring option
-
-let empty_info = None
-
-let info_attr = docs_attr
-
-let add_info_attrs info attrs =
-  match info with
-  | None | Some {ds_body=""; _} -> attrs
-  | Some ds -> attrs @ [info_attr ds]
-
-(* Docstrings not attached to a specific item *)
-
-type text = docstring list
-
-let empty_text = []
-let empty_text_lazy = lazy []
-
-let text_loc = {txt = "ocaml.text"; loc = Location.none}
-
-let text_attr ds =
-  let open Parsetree in
-  let exp =
-    { pexp_desc = Pexp_constant (Pconst_string(ds.ds_body, None));
-      pexp_loc = ds.ds_loc;
-      pexp_attributes = []; }
-  in
-  let item =
-    { pstr_desc = Pstr_eval (exp, []); pstr_loc = exp.pexp_loc }
-  in
-    (text_loc, PStr [item])
-
-let add_text_attrs dsl attrs =
-  let fdsl = List.filter (function {ds_body=""} -> false| _ ->true) dsl in
-  (List.map text_attr fdsl) @ attrs
-
-(* Find the first non-info docstring in a list, attach it and return it *)
-let get_docstring ~info dsl =
-  let rec loop = function
-    | [] -> None
-    | {ds_attached = Info; _} :: rest -> loop rest
-    | ds :: _ ->
-        ds.ds_attached <- if info then Info else Docs;
-        Some ds
-  in
-  loop dsl
-
-(* Find all the non-info docstrings in a list, attach them and return them *)
-let get_docstrings dsl =
-  let rec loop acc = function
-    | [] -> List.rev acc
-    | {ds_attached = Info; _} :: rest -> loop acc rest
-    | ds :: rest ->
-        ds.ds_attached <- Docs;
-        loop (ds :: acc) rest
-  in
-    loop [] dsl
-
-(* "Associate" all the docstrings in a list *)
-let associate_docstrings dsl =
-  List.iter
-    (fun ds ->
-       match ds.ds_associated with
-       | Zero -> ds.ds_associated <- One
-       | (One | Many) -> ds.ds_associated <- Many)
-    dsl
-
-(* Map from positions to pre docstrings *)
-
-let pre_table : (Lexing.position, docstring list) Hashtbl.t =
-  Hashtbl.create 50
-
-let set_pre_docstrings pos dsl =
-  if dsl <> [] then Hashtbl.add pre_table pos dsl
-
-let get_pre_docs pos =
-  try
-    let dsl = Hashtbl.find pre_table pos in
-      associate_docstrings dsl;
-      get_docstring ~info:false dsl
-  with Not_found -> None
-
-let mark_pre_docs pos =
-  try
-    let dsl = Hashtbl.find pre_table pos in
-      associate_docstrings dsl
-  with Not_found -> ()
-
-(* Map from positions to post docstrings *)
-
-let post_table : (Lexing.position, docstring list) Hashtbl.t =
-  Hashtbl.create 50
-
-let set_post_docstrings pos dsl =
-  if dsl <> [] then Hashtbl.add post_table pos dsl
-
-let get_post_docs pos =
-  try
-    let dsl = Hashtbl.find post_table pos in
-      associate_docstrings dsl;
-      get_docstring ~info:false dsl
-  with Not_found -> None
-
-let mark_post_docs pos =
-  try
-    let dsl = Hashtbl.find post_table pos in
-      associate_docstrings dsl
-  with Not_found -> ()
-
-let get_info pos =
-  try
-    let dsl = Hashtbl.find post_table pos in
-      get_docstring ~info:true dsl
-  with Not_found -> None
-
-(* Map from positions to floating docstrings *)
-
-let floating_table : (Lexing.position, docstring list) Hashtbl.t =
-  Hashtbl.create 50
-
-let set_floating_docstrings pos dsl =
-  if dsl <> [] then Hashtbl.add floating_table pos dsl
-
-let get_text pos =
-  try
-    let dsl = Hashtbl.find floating_table pos in
-      get_docstrings dsl
-  with Not_found -> []
-
-(* Maps from positions to extra docstrings *)
-
-let pre_extra_table : (Lexing.position, docstring list) Hashtbl.t =
-  Hashtbl.create 50
-
-let set_pre_extra_docstrings pos dsl =
-  if dsl <> [] then Hashtbl.add pre_extra_table pos dsl
-
-let get_pre_extra_text pos =
-  try
-    let dsl = Hashtbl.find pre_extra_table pos in
-      get_docstrings dsl
-  with Not_found -> []
-
-let post_extra_table : (Lexing.position, docstring list) Hashtbl.t =
-  Hashtbl.create 50
-
-let set_post_extra_docstrings pos dsl =
-  if dsl <> [] then Hashtbl.add post_extra_table pos dsl
-
-let get_post_extra_text pos =
-  try
-    let dsl = Hashtbl.find post_extra_table pos in
-      get_docstrings dsl
-  with Not_found -> []
-
-(* Docstrings from parser actions *)
-
-let symbol_docs () =
-  { docs_pre = get_pre_docs (Parsing.symbol_start_pos ());
-    docs_post = get_post_docs (Parsing.symbol_end_pos ()); }
-
-let symbol_docs_lazy () =
-  let p1 = Parsing.symbol_start_pos () in
-  let p2 = Parsing.symbol_end_pos () in
-    lazy { docs_pre = get_pre_docs p1;
-           docs_post = get_post_docs p2; }
-
-let rhs_docs pos1 pos2 =
-  { docs_pre = get_pre_docs (Parsing.rhs_start_pos pos1);
-    docs_post = get_post_docs (Parsing.rhs_end_pos pos2); }
-
-let rhs_docs_lazy pos1 pos2 =
-  let p1 = Parsing.rhs_start_pos pos1 in
-  let p2 = Parsing.rhs_end_pos pos2 in
-    lazy { docs_pre = get_pre_docs p1;
-           docs_post = get_post_docs p2; }
-
-let mark_symbol_docs () =
-  mark_pre_docs (Parsing.symbol_start_pos ());
-  mark_post_docs (Parsing.symbol_end_pos ())
-
-let mark_rhs_docs pos1 pos2 =
-  mark_pre_docs (Parsing.rhs_start_pos pos1);
-  mark_post_docs (Parsing.rhs_end_pos pos2)
-
-let symbol_info () =
-  get_info (Parsing.symbol_end_pos ())
-
-let rhs_info pos =
-  get_info (Parsing.rhs_end_pos pos)
-
-let symbol_text () =
-  get_text (Parsing.symbol_start_pos ())
-
-let symbol_text_lazy () =
-  let pos = Parsing.symbol_start_pos () in
-    lazy (get_text pos)
-
-let rhs_text pos =
-  get_text (Parsing.rhs_start_pos pos)
-
-let rhs_text_lazy pos =
-  let pos = Parsing.rhs_start_pos pos in
-    lazy (get_text pos)
-
-let symbol_pre_extra_text () =
-  get_pre_extra_text (Parsing.symbol_start_pos ())
-
-let symbol_post_extra_text () =
-  get_post_extra_text (Parsing.symbol_end_pos ())
-
-let rhs_pre_extra_text pos =
-  get_pre_extra_text (Parsing.rhs_start_pos pos)
-
-let rhs_post_extra_text pos =
-  get_post_extra_text (Parsing.rhs_end_pos pos)
-
-
-(* (Re)Initialise all comment state *)
-
-let init () =
-  docstrings := [];
-  Hashtbl.reset pre_table;
-  Hashtbl.reset post_table;
-  Hashtbl.reset floating_table;
-  Hashtbl.reset pre_extra_table;
-  Hashtbl.reset post_extra_table
diff --git a/src/compiler-libs-406/docstrings.mli b/src/compiler-libs-406/docstrings.mli
deleted file mode 100644
index 892a80e2..00000000
--- a/src/compiler-libs-406/docstrings.mli
+++ /dev/null
@@ -1,157 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                               Leo White                                *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Documentation comments *)
-
-(** (Re)Initialise all docstring state *)
-val init : unit -> unit
-
-(** Emit warnings for unattached and ambiguous docstrings *)
-val warn_bad_docstrings : unit -> unit
-
-(** {2 Docstrings} *)
-
-(** Documentation comments *)
-type docstring
-
-(** Create a docstring *)
-val docstring : string -> Location.t -> docstring
-
-(** Register a docstring *)
-val register : docstring -> unit
-
-(** Get the text of a docstring *)
-val docstring_body : docstring -> string
-
-(** Get the location of a docstring *)
-val docstring_loc : docstring -> Location.t
-
-(** {2 Set functions}
-
-   These functions are used by the lexer to associate docstrings to
-   the locations of tokens. *)
-
-(** Docstrings immediately preceding a token *)
-val set_pre_docstrings : Lexing.position -> docstring list -> unit
-
-(** Docstrings immediately following a token *)
-val set_post_docstrings : Lexing.position -> docstring list -> unit
-
-(** Docstrings not immediately adjacent to a token *)
-val set_floating_docstrings : Lexing.position -> docstring list -> unit
-
-(** Docstrings immediately following the token which precedes this one *)
-val set_pre_extra_docstrings : Lexing.position -> docstring list -> unit
-
-(** Docstrings immediately preceding the token which follows this one *)
-val set_post_extra_docstrings : Lexing.position -> docstring list -> unit
-
-(** {2 Items}
-
-    The {!docs} type represents documentation attached to an item. *)
-
-type docs =
-  { docs_pre: docstring option;
-    docs_post: docstring option; }
-
-val empty_docs : docs
-
-val docs_attr : docstring -> Parsetree.attribute
-
-(** Convert item documentation to attributes and add them to an
-    attribute list *)
-val add_docs_attrs : docs -> Parsetree.attributes -> Parsetree.attributes
-
-(** Fetch the item documentation for the current symbol. This also
-    marks this documentation (for ambiguity warnings). *)
-val symbol_docs : unit -> docs
-val symbol_docs_lazy : unit -> docs Lazy.t
-
-(** Fetch the item documentation for the symbols between two
-    positions. This also marks this documentation (for ambiguity
-    warnings). *)
-val rhs_docs : int -> int -> docs
-val rhs_docs_lazy : int -> int -> docs Lazy.t
-
-(** Mark the item documentation for the current symbol (for ambiguity
-    warnings). *)
-val mark_symbol_docs : unit -> unit
-
-(** Mark as associated the item documentation for the symbols between
-    two positions (for ambiguity warnings) *)
-val mark_rhs_docs : int -> int -> unit
-
-(** {2 Fields and constructors}
-
-    The {!info} type represents documentation attached to a field or
-    constructor. *)
-
-type info = docstring option
-
-val empty_info : info
-
-val info_attr : docstring -> Parsetree.attribute
-
-(** Convert field info to attributes and add them to an
-    attribute list *)
-val add_info_attrs : info -> Parsetree.attributes -> Parsetree.attributes
-
-(** Fetch the field info for the current symbol. *)
-val symbol_info : unit -> info
-
-(** Fetch the field info following the symbol at a given position. *)
-val rhs_info : int -> info
-
-(** {2 Unattached comments}
-
-    The {!text} type represents documentation which is not attached to
-    anything. *)
-
-type text = docstring list
-
-val empty_text : text
-val empty_text_lazy : text Lazy.t
-
-val text_attr : docstring -> Parsetree.attribute
-
-(** Convert text to attributes and add them to an attribute list *)
-val add_text_attrs : text -> Parsetree.attributes -> Parsetree.attributes
-
-(** Fetch the text preceding the current symbol. *)
-val symbol_text : unit -> text
-val symbol_text_lazy : unit -> text Lazy.t
-
-(** Fetch the text preceding the symbol at the given position. *)
-val rhs_text : int -> text
-val rhs_text_lazy : int -> text Lazy.t
-
-(** {2 Extra text}
-
-    There may be additional text attached to the delimiters of a block
-    (e.g. [struct] and [end]). This is fetched by the following
-    functions, which are applied to the contents of the block rather
-    than the delimiters. *)
-
-(** Fetch additional text preceding the current symbol *)
-val symbol_pre_extra_text : unit -> text
-
-(** Fetch additional text following the current symbol *)
-val symbol_post_extra_text : unit -> text
-
-(** Fetch additional text preceding the symbol at the given position *)
-val rhs_pre_extra_text : int -> text
-
-(** Fetch additional text following the symbol at the given position *)
-val rhs_post_extra_text : int -> text
diff --git a/src/compiler-libs-406/dune b/src/compiler-libs-406/dune
deleted file mode 100644
index 9b0e0fc8..00000000
--- a/src/compiler-libs-406/dune
+++ /dev/null
@@ -1,5 +0,0 @@
-(library
- (name compilerlibs406)
- (flags "-w" "-9")
- (modules_without_implementation asttypes outcometree parsetree)
- (libraries ))
\ No newline at end of file
diff --git a/src/compiler-libs-406/env.ml b/src/compiler-libs-406/env.ml
deleted file mode 100644
index 469d552d..00000000
--- a/src/compiler-libs-406/env.ml
+++ /dev/null
@@ -1,2373 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Environment handling *)
-
-open Cmi_format
-open Config
-open Misc
-open Asttypes
-open Longident
-open Path
-open Types
-open Btype
-
-let add_delayed_check_forward = ref (fun _ -> assert false)
-
-let value_declarations : ((string * Location.t), (unit -> unit)) Hashtbl.t =
-  Hashtbl.create 16
-    (* This table is used to usage of value declarations.  A declaration is
-       identified with its name and location.  The callback attached to a
-       declaration is called whenever the value is used explicitly
-       (lookup_value) or implicitly (inclusion test between signatures,
-       cf Includemod.value_descriptions). *)
-
-let type_declarations = Hashtbl.create 16
-let module_declarations = Hashtbl.create 16
-
-type constructor_usage = Positive | Pattern | Privatize
-type constructor_usages =
-    {
-     mutable cu_positive: bool;
-     mutable cu_pattern: bool;
-     mutable cu_privatize: bool;
-    }
-let add_constructor_usage cu = function
-  | Positive -> cu.cu_positive <- true
-  | Pattern -> cu.cu_pattern <- true
-  | Privatize -> cu.cu_privatize <- true
-let constructor_usages () =
-  {cu_positive = false; cu_pattern = false; cu_privatize = false}
-
-let used_constructors :
-    (string * Location.t * string, (constructor_usage -> unit)) Hashtbl.t
-  = Hashtbl.create 16
-
-let prefixed_sg = Hashtbl.create 113
-
-type error =
-  | Illegal_renaming of string * string * string
-  | Inconsistent_import of string * string * string
-  | Need_recursive_types of string * string
-  | Depend_on_unsafe_string_unit of string * string
-  | Missing_module of Location.t * Path.t * Path.t
-  | Illegal_value_name of Location.t * string
-
-exception Error of error
-
-let error err = raise (Error err)
-
-module EnvLazy : sig
-  type ('a,'b) t
-
-  type log
-
-  val force : ('a -> 'b) -> ('a,'b) t -> 'b
-  val create : 'a -> ('a,'b) t
-  val get_arg : ('a,'b) t -> 'a option
-
-  (* [force_logged log f t] is equivalent to [force f t] but if [f] returns [None] then
-     [t] is recorded in [log]. [backtrack log] will then reset all the recorded [t]s back
-     to their original state. *)
-  val log : unit -> log
-  val force_logged : log -> ('a -> 'b option) -> ('a,'b option) t -> 'b option
-  val backtrack : log -> unit
-
-end  = struct
-
-  type ('a,'b) t = ('a,'b) eval ref
-
-  and ('a,'b) eval =
-    | Done of 'b
-    | Raise of exn
-    | Thunk of 'a
-
-  type undo =
-    | Nil
-    | Cons : ('a, 'b) t * 'a * undo -> undo
-
-  type log = undo ref
-
-  let force f x =
-    match !x with
-    | Done x -> x
-    | Raise e -> raise e
-    | Thunk e ->
-        match f e with
-        | y ->
-          x := Done y;
-          y
-        | exception e ->
-          x := Raise e;
-          raise e
-
-  let get_arg x =
-    match !x with Thunk a -> Some a | _ -> None
-
-  let create x =
-    ref (Thunk x)
-
-  let log () =
-    ref Nil
-
-  let force_logged log f x =
-    match !x with
-    | Done x -> x
-    | Raise e -> raise e
-    | Thunk e ->
-      match f e with
-      | None ->
-          x := Done None;
-          log := Cons(x, e, !log);
-          None
-      | Some _ as y ->
-          x := Done y;
-          y
-      | exception e ->
-          x := Raise e;
-          raise e
-
-  let backtrack log =
-    let rec loop = function
-      | Nil -> ()
-      | Cons(x, e, rest) ->
-          x := Thunk e;
-          loop rest
-    in
-    loop !log
-
-end
-
-module PathMap = Map.Make(Path)
-
-type summary =
-    Env_empty
-  | Env_value of summary * Ident.t * value_description
-  | Env_type of summary * Ident.t * type_declaration
-  | Env_extension of summary * Ident.t * extension_constructor
-  | Env_module of summary * Ident.t * module_declaration
-  | Env_modtype of summary * Ident.t * modtype_declaration
-  | Env_class of summary * Ident.t * class_declaration
-  | Env_cltype of summary * Ident.t * class_type_declaration
-  | Env_open of summary * Path.t
-  | Env_functor_arg of summary * Ident.t
-  | Env_constraints of summary * type_declaration PathMap.t
-  | Env_copy_types of summary * string list
-
-module TycompTbl =
-  struct
-    (** This module is used to store components of types (i.e. labels
-        and constructors).  We keep a representation of each nested
-        "open" and the set of local bindings between each of them. *)
-
-    type 'a t = {
-      current: 'a Ident.tbl;
-      (** Local bindings since the last open. *)
-
-      opened: 'a opened option;
-      (** Symbolic representation of the last (innermost) open, if any. *)
-    }
-
-    and 'a opened = {
-      components: (string, 'a list) Tbl.t;
-      (** Components from the opened module. We keep a list of
-          bindings for each name, as in comp_labels and
-          comp_constrs. *)
-
-      using: (string -> ('a * 'a) option -> unit) option;
-      (** A callback to be applied when a component is used from this
-          "open".  This is used to detect unused "opens".  The
-          arguments are used to detect shadowing. *)
-
-      next: 'a t;
-      (** The table before opening the module. *)
-    }
-
-    let empty = { current = Ident.empty; opened = None }
-
-    let add id x tbl =
-      {tbl with current = Ident.add id x tbl.current}
-
-    let add_open slot wrap components next =
-      let using =
-        match slot with
-        | None -> None
-        | Some f -> Some (fun s x -> f s (wrap x))
-      in
-      {
-        current = Ident.empty;
-        opened = Some {using; components; next};
-      }
-
-    let rec find_same id tbl =
-      try Ident.find_same id tbl.current
-      with Not_found as exn ->
-        begin match tbl.opened with
-        | Some {next; _} -> find_same id next
-        | None -> raise exn
-        end
-
-    let nothing = fun () -> ()
-
-    let mk_callback rest name desc = function
-      | None -> nothing
-      | Some f ->
-          (fun () ->
-             match rest with
-             | [] -> f name None
-             | (hidden, _) :: _ -> f name (Some (desc, hidden))
-          )
-
-    let rec find_all name tbl =
-      List.map (fun (_id, desc) -> desc, nothing)
-        (Ident.find_all name tbl.current) @
-      match tbl.opened with
-      | None -> []
-      | Some {using; next; components} ->
-          let rest = find_all name next in
-          match Tbl.find_str name components with
-          | exception Not_found -> rest
-          | opened ->
-              List.map
-                (fun desc -> desc, mk_callback rest name desc using)
-                opened
-              @ rest
-
-    let rec fold_name f tbl acc =
-      let acc = Ident.fold_name (fun _id d -> f d) tbl.current acc in
-      match tbl.opened with
-      | Some {using = _; next; components} ->
-          acc
-          |> Tbl.fold
-            (fun _name -> List.fold_right (fun desc -> f desc))
-            components
-          |> fold_name f next
-      | None ->
-          acc
-
-    let rec local_keys tbl acc =
-      let acc = Ident.fold_all (fun k _ accu -> k::accu) tbl.current acc in
-      match tbl.opened with
-      | Some o -> local_keys o.next acc
-      | None -> acc
-
-    let diff_keys is_local tbl1 tbl2 =
-      let keys2 = local_keys tbl2 [] in
-      List.filter
-        (fun id ->
-           is_local (find_same id tbl2) &&
-           try ignore (find_same id tbl1); false
-           with Not_found -> true)
-        keys2
-
-  end
-
-
-module IdTbl =
-  struct
-    (** This module is used to store all kinds of components except
-        (labels and constructors) in environments.  We keep a
-        representation of each nested "open" and the set of local
-        bindings between each of them. *)
-
-
-    type 'a t = {
-      current: 'a Ident.tbl;
-      (** Local bindings since the last open *)
-
-      opened: 'a opened option;
-      (** Symbolic representation of the last (innermost) open, if any. *)
-    }
-
-    and 'a opened = {
-      root: Path.t;
-      (** The path of the opened module, to be prefixed in front of
-          its local names to produce a valid path in the current
-          environment. *)
-
-      components: (string, 'a * int) Tbl.t;
-      (** Components from the opened module. *)
-
-      using: (string -> ('a * 'a) option -> unit) option;
-      (** A callback to be applied when a component is used from this
-          "open".  This is used to detect unused "opens".  The
-          arguments are used to detect shadowing. *)
-
-      next: 'a t;
-      (** The table before opening the module. *)
-    }
-
-    let empty = { current = Ident.empty; opened = None }
-
-    let add id x tbl =
-      {tbl with current = Ident.add id x tbl.current}
-
-    let add_open slot wrap root components next =
-      let using =
-        match slot with
-        | None -> None
-        | Some f -> Some (fun s x -> f s (wrap x))
-      in
-      {
-        current = Ident.empty;
-        opened = Some {using; root; components; next};
-      }
-
-    let rec find_same id tbl =
-      try Ident.find_same id tbl.current
-      with Not_found as exn ->
-        begin match tbl.opened with
-        | Some {next; _} -> find_same id next
-        | None -> raise exn
-        end
-
-    let rec find_name mark name tbl =
-      try
-        let (id, desc) = Ident.find_name name tbl.current in
-        Pident id, desc
-      with Not_found as exn ->
-        begin match tbl.opened with
-        | Some {using; root; next; components} ->
-            begin try
-              let (descr, pos) = Tbl.find_str name components in
-              let res = Pdot (root, name, pos), descr in
-              if mark then begin match using with
-              | None -> ()
-              | Some f ->
-                  begin try f name (Some (snd (find_name false name next), snd res))
-                  with Not_found -> f name None
-                  end
-              end;
-              res
-            with Not_found ->
-              find_name mark name next
-            end
-        | None ->
-            raise exn
-        end
-
-    let find_name name tbl = find_name true name tbl
-
-    let rec update name f tbl =
-      try
-        let (id, desc) = Ident.find_name name tbl.current in
-        let new_desc = f desc in
-        {tbl with current = Ident.add id new_desc tbl.current}
-      with Not_found ->
-        begin match tbl.opened with
-        | Some {root; using; next; components} ->
-            begin try
-              let (desc, pos) = Tbl.find_str name components in
-              let new_desc = f desc in
-              let components = Tbl.add name (new_desc, pos) components in
-              {tbl with opened = Some {root; using; next; components}}
-            with Not_found ->
-              let next = update name f next in
-              {tbl with opened = Some {root; using; next; components}}
-            end
-        | None ->
-            tbl
-        end
-
-
-
-    let rec find_all name tbl =
-      List.map (fun (id, desc) -> Pident id, desc) (Ident.find_all name tbl.current) @
-      match tbl.opened with
-      | None -> []
-      | Some {root; using = _; next; components} ->
-          try
-            let (desc, pos) = Tbl.find_str name components in
-            (Pdot (root, name, pos), desc) :: find_all name next
-          with Not_found ->
-            find_all name next
-
-    let rec fold_name f tbl acc =
-      let acc = Ident.fold_name (fun id d -> f (Ident.name id) (Pident id, d)) tbl.current acc in
-      match tbl.opened with
-      | Some {root; using = _; next; components} ->
-          acc
-          |> Tbl.fold
-            (fun name (desc, pos) -> f name (Pdot (root, name, pos), desc))
-            components
-          |> fold_name f next
-      | None ->
-          acc
-
-    let rec local_keys tbl acc =
-      let acc = Ident.fold_all (fun k _ accu -> k::accu) tbl.current acc in
-      match tbl.opened with
-      | Some o -> local_keys o.next acc
-      | None -> acc
-
-
-    let rec iter f tbl =
-      Ident.iter (fun id desc -> f id (Pident id, desc)) tbl.current;
-      match tbl.opened with
-      | Some {root; using = _; next; components} ->
-          Tbl.iter
-            (fun s (x, pos) -> f (Ident.hide (Ident.create s) (* ??? *)) (Pdot (root, s, pos), x))
-            components;
-          iter f next
-      | None -> ()
-
-    let diff_keys tbl1 tbl2 =
-      let keys2 = local_keys tbl2 [] in
-      List.filter
-        (fun id ->
-           try ignore (find_same id tbl1); false
-           with Not_found -> true)
-        keys2
-
-
-  end
-
-type type_descriptions =
-    constructor_description list * label_description list
-
-let in_signature_flag = 0x01
-let implicit_coercion_flag = 0x02
-
-type t = {
-  values: value_description IdTbl.t;
-  constrs: constructor_description TycompTbl.t;
-  labels: label_description TycompTbl.t;
-  types: (type_declaration * type_descriptions) IdTbl.t;
-  modules: (Subst.t * module_declaration, module_declaration) EnvLazy.t IdTbl.t;
-  modtypes: modtype_declaration IdTbl.t;
-  components: module_components IdTbl.t;
-  classes: class_declaration IdTbl.t;
-  cltypes: class_type_declaration IdTbl.t;
-  functor_args: unit Ident.tbl;
-  summary: summary;
-  local_constraints: type_declaration PathMap.t;
-  gadt_instances: (int * TypeSet.t ref) list;
-  flags: int;
-}
-
-and module_components =
-  {
-    deprecated: string option;
-    loc: Location.t;
-    comps:
-      (t * Subst.t * Path.t * Types.module_type, module_components_repr option)
-        EnvLazy.t;
-  }
-
-and module_components_repr =
-    Structure_comps of structure_components
-  | Functor_comps of functor_components
-
-and 'a comp_tbl = (string, ('a * int)) Tbl.t
-
-and structure_components = {
-  mutable comp_values: value_description comp_tbl;
-  mutable comp_constrs: (string, constructor_description list) Tbl.t;
-  mutable comp_labels: (string, label_description list) Tbl.t;
-  mutable comp_types: (type_declaration * type_descriptions) comp_tbl;
-  mutable comp_modules:
-   (Subst.t * module_declaration, module_declaration) EnvLazy.t comp_tbl;
-  mutable comp_modtypes: modtype_declaration comp_tbl;
-  mutable comp_components: module_components comp_tbl;
-  mutable comp_classes: class_declaration comp_tbl;
-  mutable comp_cltypes: class_type_declaration comp_tbl;
-}
-
-and functor_components = {
-  fcomp_param: Ident.t;                 (* Formal parameter *)
-  fcomp_arg: module_type option;        (* Argument signature *)
-  fcomp_res: module_type;               (* Result signature *)
-  fcomp_cache: (Path.t, module_components) Hashtbl.t;  (* For memoization *)
-  fcomp_subst_cache: (Path.t, module_type) Hashtbl.t
-}
-
-let copy_local ~from env =
-  { env with
-    local_constraints = from.local_constraints;
-    gadt_instances = from.gadt_instances;
-    flags = from.flags }
-
-let same_constr = ref (fun _ _ _ -> assert false)
-
-(* Helper to decide whether to report an identifier shadowing
-   by some 'open'. For labels and constructors, we do not report
-   if the two elements are from the same re-exported declaration.
-
-   Later, one could also interpret some attributes on value and
-   type declarations to silence the shadowing warnings. *)
-
-let check_shadowing env = function
-  | `Constructor (Some (c1, c2))
-    when not (!same_constr env c1.cstr_res c2.cstr_res) ->
-      Some "constructor"
-  | `Label (Some (l1, l2))
-    when not (!same_constr env l1.lbl_res l2.lbl_res) ->
-      Some "label"
-  | `Value (Some _) -> Some "value"
-  | `Type (Some _) -> Some "type"
-  | `Module (Some _) | `Component (Some _) -> Some "module"
-  | `Module_type (Some _) -> Some "module type"
-  | `Class (Some _) -> Some "class"
-  | `Class_type (Some _) -> Some "class type"
-  | `Constructor _ | `Label _
-  | `Value None | `Type None | `Module None | `Module_type None
-  | `Class None | `Class_type None | `Component None ->
-      None
-
-let subst_modtype_maker (subst, md) =
-  if subst == Subst.identity then md
-  else {md with md_type = Subst.modtype subst md.md_type}
-
-let empty = {
-  values = IdTbl.empty; constrs = TycompTbl.empty;
-  labels = TycompTbl.empty; types = IdTbl.empty;
-  modules = IdTbl.empty; modtypes = IdTbl.empty;
-  components = IdTbl.empty; classes = IdTbl.empty;
-  cltypes = IdTbl.empty;
-  summary = Env_empty; local_constraints = PathMap.empty; gadt_instances = [];
-  flags = 0;
-  functor_args = Ident.empty;
- }
-
-let in_signature b env =
-  let flags =
-    if b then env.flags lor in_signature_flag
-    else env.flags land (lnot in_signature_flag)
-  in
-  {env with flags}
-
-let implicit_coercion env =
-  {env with flags = env.flags lor implicit_coercion_flag}
-
-let is_in_signature env = env.flags land in_signature_flag <> 0
-let is_implicit_coercion env = env.flags land implicit_coercion_flag <> 0
-
-let is_ident = function
-    Pident _ -> true
-  | Pdot _ | Papply _ -> false
-
-let is_local_ext = function
-  | {cstr_tag = Cstr_extension(p, _)} -> is_ident p
-  | _ -> false
-
-let diff env1 env2 =
-  IdTbl.diff_keys env1.values env2.values @
-  TycompTbl.diff_keys is_local_ext env1.constrs env2.constrs @
-  IdTbl.diff_keys env1.modules env2.modules @
-  IdTbl.diff_keys env1.classes env2.classes
-
-type can_load_cmis =
-  | Can_load_cmis
-  | Cannot_load_cmis of EnvLazy.log
-
-let can_load_cmis = ref Can_load_cmis
-
-let without_cmis f x =
-  let log = EnvLazy.log () in
-  let res =
-    Misc.(protect_refs
-            [R (can_load_cmis, Cannot_load_cmis log)]
-            (fun () -> f x))
-  in
-  EnvLazy.backtrack log;
-  res
-
-(* Forward declarations *)
-
-let components_of_module' =
-  ref ((fun ~deprecated:_ ~loc:_ _env _sub _path _mty -> assert false) :
-         deprecated:string option -> loc:Location.t -> t -> Subst.t ->
-       Path.t -> module_type ->
-       module_components)
-let components_of_module_maker' =
-  ref ((fun (_env, _sub, _path, _mty) -> assert false) :
-          t * Subst.t * Path.t * module_type -> module_components_repr option)
-let components_of_functor_appl' =
-  ref ((fun _f _env _p1 _p2 -> assert false) :
-          functor_components -> t -> Path.t -> Path.t -> module_components)
-let check_modtype_inclusion =
-  (* to be filled with Includemod.check_modtype_inclusion *)
-  ref ((fun ~loc:_ _env _mty1 _path1 _mty2 -> assert false) :
-          loc:Location.t -> t -> module_type -> Path.t -> module_type -> unit)
-let strengthen =
-  (* to be filled with Mtype.strengthen *)
-  ref ((fun ~aliasable:_ _env _mty _path -> assert false) :
-         aliasable:bool -> t -> module_type -> Path.t -> module_type)
-
-let md md_type =
-  {md_type; md_attributes=[]; md_loc=Location.none}
-
-let get_components_opt c =
-  match !can_load_cmis with
-  | Can_load_cmis ->
-    EnvLazy.force !components_of_module_maker' c.comps
-  | Cannot_load_cmis log ->
-    EnvLazy.force_logged log !components_of_module_maker' c.comps
-
-let empty_structure =
-  Structure_comps {
-    comp_values = Tbl.empty;
-    comp_constrs = Tbl.empty;
-    comp_labels = Tbl.empty;
-    comp_types = Tbl.empty;
-    comp_modules = Tbl.empty; comp_modtypes = Tbl.empty;
-    comp_components = Tbl.empty; comp_classes = Tbl.empty;
-    comp_cltypes = Tbl.empty }
-
-let get_components c =
-  match get_components_opt c with
-  | None -> empty_structure
-  | Some c -> c
-
-(* The name of the compilation unit currently compiled.
-   "" if outside a compilation unit. *)
-
-let current_unit = ref ""
-
-(* Persistent structure descriptions *)
-
-type pers_struct =
-  { ps_name: string;
-    ps_sig: signature Lazy.t;
-    ps_comps: module_components;
-    ps_crcs: (string * Digest.t option) list;
-    ps_filename: string;
-    ps_flags: pers_flags list }
-
-let persistent_structures =
-  (Hashtbl.create 17 : (string, pers_struct option) Hashtbl.t)
-
-(* Consistency between persistent structures *)
-
-let crc_units = Consistbl.create()
-
-module StringSet =
-  Set.Make(struct type t = string let compare = String.compare end)
-
-let imported_units = ref StringSet.empty
-
-let add_import s =
-  imported_units := StringSet.add s !imported_units
-
-let imported_opaque_units = ref StringSet.empty
-
-let add_imported_opaque s =
-  imported_opaque_units := StringSet.add s !imported_opaque_units
-
-let clear_imports () =
-  Consistbl.clear crc_units;
-  imported_units := StringSet.empty;
-  imported_opaque_units := StringSet.empty
-
-let check_consistency ps =
-  try
-    List.iter
-      (fun (name, crco) ->
-         match crco with
-            None -> ()
-          | Some crc ->
-              add_import name;
-              Consistbl.check crc_units name crc ps.ps_filename)
-      ps.ps_crcs;
-  with Consistbl.Inconsistency(name, source, auth) ->
-    error (Inconsistent_import(name, auth, source))
-
-(* Reading persistent structures from .cmi files *)
-
-let save_pers_struct crc ps =
-  let modname = ps.ps_name in
-  Hashtbl.add persistent_structures modname (Some ps);
-  List.iter
-    (function
-        | Rectypes -> ()
-        | Deprecated _ -> ()
-        | Unsafe_string -> ()
-        | Opaque -> add_imported_opaque modname)
-    ps.ps_flags;
-  Consistbl.set crc_units modname crc ps.ps_filename;
-  add_import modname
-
-module Persistent_signature = struct
-  type t =
-    { filename : string;
-      cmi : Cmi_format.cmi_infos }
-
-  let load = ref (fun ~unit_name ->
-    match find_in_path_uncap !load_path (unit_name ^ ".cmi") with
-    | filename -> Some { filename; cmi = read_cmi filename }
-    | exception Not_found -> None)
-end
-
-let acknowledge_pers_struct check modname
-      { Persistent_signature.filename; cmi } =
-  let name = cmi.cmi_name in
-  let sign = cmi.cmi_sign in
-  let crcs = cmi.cmi_crcs in
-  let flags = cmi.cmi_flags in
-  let deprecated =
-    List.fold_left (fun acc -> function Deprecated s -> Some s | _ -> acc) None
-      flags
-  in
-  let comps =
-      !components_of_module' ~deprecated ~loc:Location.none
-        empty Subst.identity
-                             (Pident(Ident.create_persistent name))
-                             (Mty_signature sign)
-  in
-  let ps = { ps_name = name;
-             ps_sig = lazy (Subst.signature Subst.identity sign);
-             ps_comps = comps;
-             ps_crcs = crcs;
-             ps_filename = filename;
-             ps_flags = flags;
-           } in
-  if ps.ps_name <> modname then
-    error (Illegal_renaming(modname, ps.ps_name, filename));
-
-  List.iter
-    (function
-        | Rectypes ->
-              error (Need_recursive_types(ps.ps_name, !current_unit))
-        | Unsafe_string ->
-              error (Depend_on_unsafe_string_unit (ps.ps_name, !current_unit));
-        | Deprecated _ -> ()
-        | Opaque -> add_imported_opaque modname)
-    ps.ps_flags;
-  if check then check_consistency ps;
-  Hashtbl.add persistent_structures modname (Some ps);
-  ps
-
-let read_pers_struct check modname filename =
-  add_import modname;
-  let cmi = read_cmi filename in
-  acknowledge_pers_struct check modname
-    { Persistent_signature.filename; cmi }
-
-let find_pers_struct check name =
-  if name = "*predef*" then raise Not_found;
-  match Hashtbl.find persistent_structures name with
-  | Some ps -> ps
-  | None -> raise Not_found
-  | exception Not_found ->
-    match !can_load_cmis with
-    | Cannot_load_cmis _ -> raise Not_found
-    | Can_load_cmis ->
-        let ps =
-          match !Persistent_signature.load ~unit_name:name with
-          | Some ps -> ps
-          | None ->
-            Hashtbl.add persistent_structures name None;
-            raise Not_found
-        in
-        add_import name;
-        acknowledge_pers_struct check name ps
-
-(* Emits a warning if there is no valid cmi for name *)
-let check_pers_struct name =
-  try
-    ignore (find_pers_struct false name)
-  with
-  | Not_found ->
-      let warn = Warnings.No_cmi_file(name, None) in
-        Location.prerr_warning Location.none warn
-  | Cmi_format.Error err ->
-      let msg = Format.asprintf "%a" Cmi_format.report_error err in
-      let warn = Warnings.No_cmi_file(name, Some msg) in
-        Location.prerr_warning Location.none warn
-  | Error err ->
-      let msg =
-        match err with
-        | Illegal_renaming(name, ps_name, filename) ->
-            Format.asprintf
-              " %a@ contains the compiled interface for @ \
-               %s when %s was expected"
-              Location.print_filename filename ps_name name
-        | Inconsistent_import _ -> assert false
-        | Need_recursive_types(name, _) ->
-            Format.sprintf
-              "%s uses recursive types"
-              name
-        | Depend_on_unsafe_string_unit (name, _) ->
-            Printf.sprintf "%s uses -unsafe-string"
-              name
-        | Missing_module _ -> assert false
-        | Illegal_value_name _ -> assert false
-      in
-      let warn = Warnings.No_cmi_file(name, Some msg) in
-        Location.prerr_warning Location.none warn
-
-let read_pers_struct modname filename =
-  read_pers_struct true modname filename
-
-let find_pers_struct name =
-  find_pers_struct true name
-
-let check_pers_struct name =
-  if not (Hashtbl.mem persistent_structures name) then begin
-    (* PR#6843: record the weak dependency ([add_import]) regardless of
-       whether the check succeeds, to help make builds more
-       deterministic. *)
-    add_import name;
-    if (Warnings.is_active (Warnings.No_cmi_file("", None))) then
-      !add_delayed_check_forward
-        (fun () -> check_pers_struct name)
-  end
-
-let reset_cache () =
-  current_unit := "";
-  Hashtbl.clear persistent_structures;
-  clear_imports ();
-  Hashtbl.clear value_declarations;
-  Hashtbl.clear type_declarations;
-  Hashtbl.clear module_declarations;
-  Hashtbl.clear used_constructors;
-  Hashtbl.clear prefixed_sg
-
-let reset_cache_toplevel () =
-  (* Delete 'missing cmi' entries from the cache. *)
-  let l =
-    Hashtbl.fold
-      (fun name r acc -> if r = None then name :: acc else acc)
-      persistent_structures []
-  in
-  List.iter (Hashtbl.remove persistent_structures) l;
-  Hashtbl.clear value_declarations;
-  Hashtbl.clear type_declarations;
-  Hashtbl.clear module_declarations;
-  Hashtbl.clear used_constructors;
-  Hashtbl.clear prefixed_sg
-
-
-let set_unit_name name =
-  current_unit := name
-
-let get_unit_name () =
-  !current_unit
-
-(* Lookup by identifier *)
-
-let rec find_module_descr path env =
-  match path with
-    Pident id ->
-      begin try
-        IdTbl.find_same id env.components
-      with Not_found ->
-        if Ident.persistent id && not (Ident.name id = !current_unit)
-        then (find_pers_struct (Ident.name id)).ps_comps
-        else raise Not_found
-      end
-  | Pdot(p, s, _pos) ->
-      begin match get_components (find_module_descr p env) with
-        Structure_comps c ->
-          let (descr, _pos) = Tbl.find_str s c.comp_components in
-          descr
-      | Functor_comps _ ->
-         raise Not_found
-      end
-  | Papply(p1, p2) ->
-      begin match get_components (find_module_descr p1 env) with
-        Functor_comps f ->
-          !components_of_functor_appl' f env p1 p2
-      | Structure_comps _ ->
-          raise Not_found
-      end
-
-let find proj1 proj2 path env =
-  match path with
-    Pident id ->
-      IdTbl.find_same id (proj1 env)
-  | Pdot(p, s, _pos) ->
-      begin match get_components (find_module_descr p env) with
-        Structure_comps c ->
-          let (data, _pos) = Tbl.find_str s (proj2 c) in data
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Papply _ ->
-      raise Not_found
-
-let find_value =
-  find (fun env -> env.values) (fun sc -> sc.comp_values)
-and find_type_full =
-  find (fun env -> env.types) (fun sc -> sc.comp_types)
-and find_modtype =
-  find (fun env -> env.modtypes) (fun sc -> sc.comp_modtypes)
-and find_class =
-  find (fun env -> env.classes) (fun sc -> sc.comp_classes)
-and find_cltype =
-  find (fun env -> env.cltypes) (fun sc -> sc.comp_cltypes)
-
-let type_of_cstr path = function
-  | {cstr_inlined = Some d; _} ->
-      (d, ([], List.map snd (Datarepr.labels_of_type path d)))
-  | _ ->
-      assert false
-
-let find_type_full path env =
-  match Path.constructor_typath path with
-  | Regular p ->
-      (try (PathMap.find p env.local_constraints, ([], []))
-       with Not_found -> find_type_full p env)
-  | Cstr (ty_path, s) ->
-      let (_, (cstrs, _)) =
-        try find_type_full ty_path env
-        with Not_found -> assert false
-      in
-      let cstr =
-        try List.find (fun cstr -> cstr.cstr_name = s) cstrs
-        with Not_found -> assert false
-      in
-      type_of_cstr path cstr
-  | LocalExt id ->
-      let cstr =
-        try TycompTbl.find_same id env.constrs
-        with Not_found -> assert false
-      in
-      type_of_cstr path cstr
-  | Ext (mod_path, s) ->
-      let comps =
-        try find_module_descr mod_path env
-        with Not_found -> assert false
-      in
-      let comps =
-        match get_components comps with
-        | Structure_comps c -> c
-        | Functor_comps _ -> assert false
-      in
-      let exts =
-        List.filter
-          (function {cstr_tag=Cstr_extension _} -> true | _ -> false)
-          (try Tbl.find_str s comps.comp_constrs
-           with Not_found -> assert false)
-      in
-      match exts with
-      | [cstr] -> type_of_cstr path cstr
-      | _ -> assert false
-
-let find_type p env =
-  fst (find_type_full p env)
-let find_type_descrs p env =
-  snd (find_type_full p env)
-
-let find_module ~alias path env =
-  match path with
-    Pident id ->
-      begin try
-        let data = IdTbl.find_same id env.modules in
-        EnvLazy.force subst_modtype_maker data
-      with Not_found ->
-        if Ident.persistent id && not (Ident.name id = !current_unit) then
-          let ps = find_pers_struct (Ident.name id) in
-          md (Mty_signature(Lazy.force ps.ps_sig))
-        else raise Not_found
-      end
-  | Pdot(p, s, _pos) ->
-      begin match get_components (find_module_descr p env) with
-        Structure_comps c ->
-          let (data, _pos) = Tbl.find_str s c.comp_modules in
-          EnvLazy.force subst_modtype_maker data
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Papply(p1, p2) ->
-      let desc1 = find_module_descr p1 env in
-      begin match get_components desc1 with
-        Functor_comps f ->
-          md begin match f.fcomp_res with
-          | Mty_alias _ as mty -> mty
-          | mty ->
-              if alias then mty else
-              try
-                Hashtbl.find f.fcomp_subst_cache p2
-              with Not_found ->
-                let mty =
-                  Subst.modtype
-                    (Subst.add_module f.fcomp_param p2 Subst.identity)
-                    f.fcomp_res in
-                Hashtbl.add f.fcomp_subst_cache p2 mty;
-                mty
-          end
-      | Structure_comps _ ->
-          raise Not_found
-      end
-
-let required_globals = ref []
-let reset_required_globals () = required_globals := []
-let get_required_globals () = !required_globals
-let add_required_global id =
-  if Ident.global id && not !Clflags.transparent_modules
-  && not (List.exists (Ident.same id) !required_globals)
-  then required_globals := id :: !required_globals
-
-let rec normalize_path lax env path =
-  let path =
-    match path with
-      Pdot(p, s, pos) ->
-        Pdot(normalize_path lax env p, s, pos)
-    | Papply(p1, p2) ->
-        Papply(normalize_path lax env p1, normalize_path true env p2)
-    | _ -> path
-  in
-  try match find_module ~alias:true path env with
-    {md_type=Mty_alias(_, path1)} ->
-      let path' = normalize_path lax env path1 in
-      if lax || !Clflags.transparent_modules then path' else
-      let id = Path.head path in
-      if Ident.global id && not (Ident.same id (Path.head path'))
-      then add_required_global id;
-      path'
-  | _ -> path
-  with Not_found when lax
-  || (match path with Pident id -> not (Ident.persistent id) | _ -> true) ->
-      path
-
-let normalize_path oloc env path =
-  try normalize_path (oloc = None) env path
-  with Not_found ->
-    match oloc with None -> assert false
-    | Some loc ->
-        raise (Error(Missing_module(loc, path, normalize_path true env path)))
-
-let normalize_path_prefix oloc env path =
-  match path with
-    Pdot(p, s, pos) ->
-      Pdot(normalize_path oloc env p, s, pos)
-  | Pident _ ->
-      path
-  | Papply _ ->
-      assert false
-
-
-let find_module = find_module ~alias:false
-
-(* Find the manifest type associated to a type when appropriate:
-   - the type should be public or should have a private row,
-   - the type should have an associated manifest type. *)
-let find_type_expansion path env =
-  let decl = find_type path env in
-  match decl.type_manifest with
-  | Some body when decl.type_private = Public
-              || decl.type_kind <> Type_abstract
-              || Btype.has_constr_row body ->
-                  (decl.type_params, body, may_map snd decl.type_newtype_level)
-  (* The manifest type of Private abstract data types without
-     private row are still considered unknown to the type system.
-     Hence, this case is caught by the following clause that also handles
-     purely abstract data types without manifest type definition. *)
-  | _ -> raise Not_found
-
-(* Find the manifest type information associated to a type, i.e.
-   the necessary information for the compiler's type-based optimisations.
-   In particular, the manifest type associated to a private abstract type
-   is revealed for the sake of compiler's type-based optimisations. *)
-let find_type_expansion_opt path env =
-  let decl = find_type path env in
-  match decl.type_manifest with
-  (* The manifest type of Private abstract data types can still get
-     an approximation using their manifest type. *)
-  | Some body -> (decl.type_params, body, may_map snd decl.type_newtype_level)
-  | _ -> raise Not_found
-
-let find_modtype_expansion path env =
-  match (find_modtype path env).mtd_type with
-  | None -> raise Not_found
-  | Some mty -> mty
-
-let rec is_functor_arg path env =
-  match path with
-    Pident id ->
-      begin try Ident.find_same id env.functor_args; true
-      with Not_found -> false
-      end
-  | Pdot (p, _s, _) -> is_functor_arg p env
-  | Papply _ -> true
-
-(* Lookup by name *)
-
-exception Recmodule
-
-let report_deprecated ?loc p deprecated =
-  match loc, deprecated with
-  | Some loc, Some txt ->
-      let txt = if txt = "" then "" else "\n" ^ txt in
-      Location.deprecated loc (Printf.sprintf "module %s%s" (Path.name p) txt)
-  | _ -> ()
-
-let mark_module_used env name loc =
-  if not (is_implicit_coercion env) then
-    try Hashtbl.find module_declarations (name, loc) ()
-    with Not_found -> ()
-
-let rec lookup_module_descr_aux ?loc lid env =
-  match lid with
-    Lident s ->
-      begin try
-        IdTbl.find_name s env.components
-      with Not_found ->
-        if s = !current_unit then raise Not_found;
-        let ps = find_pers_struct s in
-        (Pident(Ident.create_persistent s), ps.ps_comps)
-      end
-  | Ldot(l, s) ->
-      let (p, descr) = lookup_module_descr ?loc l env in
-      begin match get_components descr with
-        Structure_comps c ->
-          let (descr, pos) = Tbl.find_str s c.comp_components in
-          (Pdot(p, s, pos), descr)
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Lapply(l1, l2) ->
-      let (p1, desc1) = lookup_module_descr ?loc l1 env in
-      let p2 = lookup_module ~load:true ?loc l2 env in
-      let {md_type=mty2} = find_module p2 env in
-      begin match get_components desc1 with
-        Functor_comps f ->
-          let loc = match loc with Some l -> l | None -> Location.none in
-          Misc.may (!check_modtype_inclusion ~loc env mty2 p2) f.fcomp_arg;
-          (Papply(p1, p2), !components_of_functor_appl' f env p1 p2)
-      | Structure_comps _ ->
-          raise Not_found
-      end
-
-and lookup_module_descr ?loc lid env =
-  let (p, comps) as res = lookup_module_descr_aux ?loc lid env in
-  mark_module_used env (Path.last p) comps.loc;
-(*
-  Format.printf "USE module %s at %a@." (Path.last p)
-    Location.print comps.loc;
-*)
-  report_deprecated ?loc p comps.deprecated;
-  res
-
-and lookup_module ~load ?loc lid env : Path.t =
-  match lid with
-    Lident s ->
-      begin try
-        let (p, data) = IdTbl.find_name s env.modules in
-        let {md_loc; md_attributes; md_type} =
-          EnvLazy.force subst_modtype_maker data
-        in
-        mark_module_used env s md_loc;
-        begin match md_type with
-        | Mty_ident (Path.Pident id) when Ident.name id = "#recmod#" ->
-          (* see #5965 *)
-          raise Recmodule
-        | Mty_alias (_, Path.Pident id) ->   
-          if !Config.bs_only && not !Clflags.transparent_modules && Ident.persistent id then 
-            find_pers_struct (Ident.name id) |> ignore 
-        | _ -> ()
-        end;
-        report_deprecated ?loc p
-          (Builtin_attributes.deprecated_of_attrs md_attributes);
-        p
-      with Not_found ->
-        if s = !current_unit then raise Not_found;
-        let p = Pident(Ident.create_persistent s) in
-        if !Clflags.transparent_modules && not load then check_pers_struct s
-        else begin
-          let ps = find_pers_struct s in
-          report_deprecated ?loc p ps.ps_comps.deprecated
-        end;
-        p
-      end
-  | Ldot(l, s) ->
-      let (p, descr) = lookup_module_descr ?loc l env in
-      begin match get_components descr with
-        Structure_comps c ->
-          let (_data, pos) = Tbl.find_str s c.comp_modules in
-          let (comps, _) = Tbl.find_str s c.comp_components in
-          mark_module_used env s comps.loc;
-          let p = Pdot(p, s, pos) in
-          report_deprecated ?loc p comps.deprecated;
-          p
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Lapply(l1, l2) ->
-      let (p1, desc1) = lookup_module_descr ?loc l1 env in
-      let p2 = lookup_module ~load:true ?loc l2 env in
-      let {md_type=mty2} = find_module p2 env in
-      let p = Papply(p1, p2) in
-      begin match get_components desc1 with
-        Functor_comps f ->
-          let loc = match loc with Some l -> l | None -> Location.none in
-          Misc.may (!check_modtype_inclusion ~loc env mty2 p2) f.fcomp_arg;
-          p
-      | Structure_comps _ ->
-          raise Not_found
-      end
-
-let lookup proj1 proj2 ?loc lid env =
-  match lid with
-    Lident s ->
-      IdTbl.find_name s (proj1 env)
-  | Ldot(l, s) ->
-      let (p, desc) = lookup_module_descr ?loc l env in
-      begin match get_components desc with
-        Structure_comps c ->
-          let (data, pos) = Tbl.find_str s (proj2 c) in
-          (Pdot(p, s, pos), data)
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Lapply _ ->
-      raise Not_found
-
-let lookup_all_simple proj1 proj2 shadow ?loc lid env =
-  match lid with
-    Lident s ->
-      let xl = TycompTbl.find_all s (proj1 env) in
-      let rec do_shadow =
-        function
-        | [] -> []
-        | ((x, f) :: xs) ->
-            (x, f) ::
-              (do_shadow (List.filter (fun (y, _) -> not (shadow x y)) xs))
-      in
-        do_shadow xl
-  | Ldot(l, s) ->
-      let (_p, desc) = lookup_module_descr ?loc l env in
-      begin match get_components desc with
-        Structure_comps c ->
-          let comps =
-            try Tbl.find_str s (proj2 c) with Not_found -> []
-          in
-          List.map
-            (fun data -> (data, (fun () -> ())))
-            comps
-      | Functor_comps _ ->
-          raise Not_found
-      end
-  | Lapply _ ->
-      raise Not_found
-
-let has_local_constraints env = not (PathMap.is_empty env.local_constraints)
-
-let cstr_shadow cstr1 cstr2 =
-  match cstr1.cstr_tag, cstr2.cstr_tag with
-  | Cstr_extension _, Cstr_extension _ -> true
-  | _ -> false
-
-let lbl_shadow _lbl1 _lbl2 = false
-
-let lookup_value =
-  lookup (fun env -> env.values) (fun sc -> sc.comp_values)
-let lookup_all_constructors =
-  lookup_all_simple (fun env -> env.constrs) (fun sc -> sc.comp_constrs)
-    cstr_shadow
-let lookup_all_labels =
-  lookup_all_simple (fun env -> env.labels) (fun sc -> sc.comp_labels)
-    lbl_shadow
-let lookup_type =
-  lookup (fun env -> env.types) (fun sc -> sc.comp_types)
-let lookup_modtype =
-  lookup (fun env -> env.modtypes) (fun sc -> sc.comp_modtypes)
-let lookup_class =
-  lookup (fun env -> env.classes) (fun sc -> sc.comp_classes)
-let lookup_cltype =
-  lookup (fun env -> env.cltypes) (fun sc -> sc.comp_cltypes)
-
-let copy_types l env =
-  let f desc = {desc with val_type = Subst.type_expr Subst.identity desc.val_type} in
-  let values = List.fold_left (fun env s -> IdTbl.update s f env) env.values l in
-  {env with values; summary = Env_copy_types (env.summary, l)}
-
-let mark_value_used env name vd =
-  if not (is_implicit_coercion env) then
-    try Hashtbl.find value_declarations (name, vd.val_loc) ()
-    with Not_found -> ()
-
-let mark_type_used env name vd =
-  if not (is_implicit_coercion env) then
-    try Hashtbl.find type_declarations (name, vd.type_loc) ()
-    with Not_found -> ()
-
-let mark_constructor_used usage env name vd constr =
-  if not (is_implicit_coercion env) then
-    try Hashtbl.find used_constructors (name, vd.type_loc, constr) usage
-    with Not_found -> ()
-
-let mark_extension_used usage env ext name =
-  if not (is_implicit_coercion env) then
-    let ty_name = Path.last ext.ext_type_path in
-    try Hashtbl.find used_constructors (ty_name, ext.ext_loc, name) usage
-    with Not_found -> ()
-
-let set_value_used_callback name vd callback =
-  let key = (name, vd.val_loc) in
-  try
-    let old = Hashtbl.find value_declarations key in
-    Hashtbl.replace value_declarations key (fun () -> old (); callback ())
-      (* this is to support cases like:
-               let x = let x = 1 in x in x
-         where the two declarations have the same location
-         (e.g. resulting from Camlp4 expansion of grammar entries) *)
-  with Not_found ->
-    Hashtbl.add value_declarations key callback
-
-let set_type_used_callback name td callback =
-  let loc = td.type_loc in
-  if loc.Location.loc_ghost then ()
-  else let key = (name, loc) in
-  let old =
-    try Hashtbl.find type_declarations key
-    with Not_found -> assert false
-  in
-  Hashtbl.replace type_declarations key (fun () -> callback old)
-
-let lookup_value ?loc lid env =
-  let (_, desc) as r = lookup_value ?loc lid env in
-  mark_value_used env (Longident.last lid) desc;
-  r
-
-let lookup_type ?loc lid env =
-  let (path, (decl, _)) = lookup_type ?loc lid env in
-  mark_type_used env (Longident.last lid) decl;
-  path
-
-let mark_type_path env path =
-  try
-    let decl = find_type path env in
-    mark_type_used env (Path.last path) decl
-  with Not_found -> ()
-
-let ty_path t =
-  match repr t with
-  | {desc=Tconstr(path, _, _)} -> path
-  | _ -> assert false
-
-let lookup_constructor ?loc lid env =
-  match lookup_all_constructors ?loc lid env with
-    [] -> raise Not_found
-  | (desc, use) :: _ ->
-      mark_type_path env (ty_path desc.cstr_res);
-      use ();
-      desc
-
-let is_lident = function
-    Lident _ -> true
-  | _ -> false
-
-let lookup_all_constructors ?loc lid env =
-  try
-    let cstrs = lookup_all_constructors ?loc lid env in
-    let wrap_use desc use () =
-      mark_type_path env (ty_path desc.cstr_res);
-      use ()
-    in
-    List.map (fun (cstr, use) -> (cstr, wrap_use cstr use)) cstrs
-  with
-    Not_found when is_lident lid -> []
-
-let mark_constructor usage env name desc =
-  if not (is_implicit_coercion env)
-  then match desc.cstr_tag with
-  | Cstr_extension _ ->
-      begin
-        let ty_path = ty_path desc.cstr_res in
-        let ty_name = Path.last ty_path in
-        try Hashtbl.find used_constructors (ty_name, desc.cstr_loc, name) usage
-        with Not_found -> ()
-      end
-  | _ ->
-      let ty_path = ty_path desc.cstr_res in
-      let ty_decl = try find_type ty_path env with Not_found -> assert false in
-      let ty_name = Path.last ty_path in
-      mark_constructor_used usage env ty_name ty_decl name
-
-let lookup_label ?loc lid env =
-  match lookup_all_labels ?loc lid env with
-    [] -> raise Not_found
-  | (desc, use) :: _ ->
-      mark_type_path env (ty_path desc.lbl_res);
-      use ();
-      desc
-
-let lookup_all_labels ?loc lid env =
-  try
-    let lbls = lookup_all_labels ?loc lid env in
-    let wrap_use desc use () =
-      mark_type_path env (ty_path desc.lbl_res);
-      use ()
-    in
-    List.map (fun (lbl, use) -> (lbl, wrap_use lbl use)) lbls
-  with
-    Not_found when is_lident lid -> []
-
-let lookup_class ?loc lid env =
-  let (_, desc) as r = lookup_class ?loc lid env in
-  (* special support for Typeclass.unbound_class *)
-  if Path.name desc.cty_path = "" then ignore (lookup_type ?loc lid env)
-  else mark_type_path env desc.cty_path;
-  r
-
-let lookup_cltype ?loc lid env =
-  let (_, desc) as r = lookup_cltype ?loc lid env in
-  if Path.name desc.clty_path = "" then ignore (lookup_type ?loc lid env)
-  else mark_type_path env desc.clty_path;
-  mark_type_path env desc.clty_path;
-  r
-
-(* Iter on an environment (ignoring the body of functors and
-   not yet evaluated structures) *)
-
-type iter_cont = unit -> unit
-let iter_env_cont = ref []
-
-let rec scrape_alias_for_visit env mty =
-  match mty with
-  | Mty_alias(_, Pident id)
-    when Ident.persistent id
-      && not (Hashtbl.mem persistent_structures (Ident.name id)) -> false
-  | Mty_alias(_, path) -> (* PR#6600: find_module may raise Not_found *)
-      begin try scrape_alias_for_visit env (find_module path env).md_type
-      with Not_found -> false
-      end
-  | _ -> true
-
-let iter_env proj1 proj2 f env () =
-  IdTbl.iter (fun id x -> f (Pident id) x) (proj1 env);
-  let rec iter_components path path' mcomps =
-    let cont () =
-      let visit =
-        match EnvLazy.get_arg mcomps.comps with
-        | None -> true
-        | Some (env, _sub, _path, mty) -> scrape_alias_for_visit env mty
-      in
-      if not visit then () else
-      match get_components mcomps with
-        Structure_comps comps ->
-          Tbl.iter
-            (fun s (d, n) -> f (Pdot (path, s, n)) (Pdot (path', s, n), d))
-            (proj2 comps);
-          Tbl.iter
-            (fun s (c, n) ->
-              iter_components (Pdot (path, s, n)) (Pdot (path', s, n)) c)
-            comps.comp_components
-      | Functor_comps _ -> ()
-    in iter_env_cont := (path, cont) :: !iter_env_cont
-  in
-  Hashtbl.iter
-    (fun s pso ->
-      match pso with None -> ()
-      | Some ps ->
-          let id = Pident (Ident.create_persistent s) in
-          iter_components id id ps.ps_comps)
-    persistent_structures;
-  IdTbl.iter
-    (fun id (path, comps) -> iter_components (Pident id) path comps)
-    env.components
-
-let run_iter_cont l =
-  iter_env_cont := [];
-  List.iter (fun c -> c ()) l;
-  let cont = List.rev !iter_env_cont in
-  iter_env_cont := [];
-  cont
-
-let iter_types f = iter_env (fun env -> env.types) (fun sc -> sc.comp_types) f
-
-let same_types env1 env2 =
-  env1.types == env2.types && env1.components == env2.components
-
-let used_persistent () =
-  let r = ref Concr.empty in
-  Hashtbl.iter (fun s pso -> if pso != None then r := Concr.add s !r)
-    persistent_structures;
-  !r
-
-let find_all_comps proj s (p,mcomps) =
-  match get_components mcomps with
-    Functor_comps _ -> []
-  | Structure_comps comps ->
-      try let (c,n) = Tbl.find_str s (proj comps) in [Pdot(p,s,n), c]
-      with Not_found -> []
-
-let rec find_shadowed_comps path env =
-  match path with
-    Pident id ->
-      IdTbl.find_all (Ident.name id) env.components
-  | Pdot (p, s, _) ->
-      let l = find_shadowed_comps p env in
-      let l' =
-        List.map (find_all_comps (fun comps -> comps.comp_components) s) l in
-      List.flatten l'
-  | Papply _ -> []
-
-let find_shadowed proj1 proj2 path env =
-  match path with
-    Pident id ->
-      IdTbl.find_all (Ident.name id) (proj1 env)
-  | Pdot (p, s, _) ->
-      let l = find_shadowed_comps p env in
-      let l' = List.map (find_all_comps proj2 s) l in
-      List.flatten l'
-  | Papply _ -> []
-
-let find_shadowed_types path env =
-  List.map fst
-    (find_shadowed
-       (fun env -> env.types) (fun comps -> comps.comp_types) path env)
-
-
-(* GADT instance tracking *)
-
-let add_gadt_instance_level lv env =
-  {env with
-   gadt_instances = (lv, ref TypeSet.empty) :: env.gadt_instances}
-
-let is_Tlink = function {desc = Tlink _} -> true | _ -> false
-
-let gadt_instance_level env t =
-  let rec find_instance = function
-      [] -> None
-    | (lv, r) :: rem ->
-        if TypeSet.exists is_Tlink !r then
-          (* Should we use set_typeset ? *)
-          r := TypeSet.fold (fun ty -> TypeSet.add (repr ty)) !r TypeSet.empty;
-        if TypeSet.mem t !r then Some lv else find_instance rem
-  in find_instance env.gadt_instances
-
-let add_gadt_instances env lv tl =
-  let r =
-    try List.assoc lv env.gadt_instances with Not_found -> assert false in
-  (* Format.eprintf "Added";
-  List.iter (fun ty -> Format.eprintf "@ %a" !Btype.print_raw ty) tl;
-  Format.eprintf "@."; *)
-  set_typeset r (List.fold_right TypeSet.add tl !r)
-
-(* Only use this after expand_head! *)
-let add_gadt_instance_chain env lv t =
-  let r =
-    try List.assoc lv env.gadt_instances with Not_found -> assert false in
-  let rec add_instance t =
-    let t = repr t in
-    if not (TypeSet.mem t !r) then begin
-      (* Format.eprintf "@ %a" !Btype.print_raw t; *)
-      set_typeset r (TypeSet.add t !r);
-      match t.desc with
-        Tconstr (p, _, memo) ->
-          may add_instance (find_expans Private p !memo)
-      | _ -> ()
-    end
-  in
-  (* Format.eprintf "Added chain"; *)
-  add_instance t
-  (* Format.eprintf "@." *)
-
-(* Expand manifest module type names at the top of the given module type *)
-
-let rec scrape_alias env ?path mty =
-  match mty, path with
-    Mty_ident p, _ ->
-      begin try
-        scrape_alias env (find_modtype_expansion p env) ?path
-      with Not_found ->
-        mty
-      end
-  | Mty_alias(_, path), _ ->
-      begin try
-        scrape_alias env (find_module path env).md_type ~path
-      with Not_found ->
-        (*Location.prerr_warning Location.none
-          (Warnings.No_cmi_file (Path.name path));*)
-        mty
-      end
-  | mty, Some path ->
-      !strengthen ~aliasable:true env mty path
-  | _ -> mty
-
-let scrape_alias env mty = scrape_alias env mty
-
-(* Given a signature and a root path, prefix all idents in the signature
-   by the root path and build the corresponding substitution. *)
-
-let rec prefix_idents root pos sub = function
-    [] -> ([], sub)
-  | Sig_value(id, decl) :: rem ->
-      let p = Pdot(root, Ident.name id, pos) in
-      let nextpos = match decl.val_kind with Val_prim _ -> pos | _ -> pos+1 in
-      let (pl, final_sub) = prefix_idents root nextpos sub rem in
-      (p::pl, final_sub)
-  | Sig_type(id, _, _) :: rem ->
-      let p = Pdot(root, Ident.name id, nopos) in
-      let (pl, final_sub) =
-        prefix_idents root pos (Subst.add_type id p sub) rem in
-      (p::pl, final_sub)
-  | Sig_typext(id, _, _) :: rem ->
-      let p = Pdot(root, Ident.name id, pos) in
-      (* we extend the substitution in case of an inlined record *)
-      let (pl, final_sub) =
-        prefix_idents root (pos+1) (Subst.add_type id p sub) rem in
-      (p::pl, final_sub)
-  | Sig_module(id, _, _) :: rem ->
-      let p = Pdot(root, Ident.name id, pos) in
-      let (pl, final_sub) =
-        prefix_idents root (pos+1) (Subst.add_module id p sub) rem in
-      (p::pl, final_sub)
-  | Sig_modtype(id, _) :: rem ->
-      let p = Pdot(root, Ident.name id, nopos) in
-      let (pl, final_sub) =
-        prefix_idents root pos
-                      (Subst.add_modtype id (Mty_ident p) sub) rem in
-      (p::pl, final_sub)
-  | Sig_class(id, _, _) :: rem ->
-      (* pretend this is a type, cf. PR#6650 *)
-      let p = Pdot(root, Ident.name id, pos) in
-      let (pl, final_sub) =
-        prefix_idents root (pos + 1) (Subst.add_type id p sub) rem in
-      (p::pl, final_sub)
-  | Sig_class_type(id, _, _) :: rem ->
-      let p = Pdot(root, Ident.name id, nopos) in
-      let (pl, final_sub) =
-        prefix_idents root pos (Subst.add_type id p sub) rem in
-      (p::pl, final_sub)
-
-let prefix_idents root sub sg =
-  if sub = Subst.identity then
-    let sgs =
-      try
-        Hashtbl.find prefixed_sg root
-      with Not_found ->
-        let sgs = ref [] in
-        Hashtbl.add prefixed_sg root sgs;
-        sgs
-    in
-    try
-      List.assq sg !sgs
-    with Not_found ->
-      let r = prefix_idents root 0 sub sg in
-      sgs := (sg, r) :: !sgs;
-      r
-  else
-    prefix_idents root 0 sub sg
-
-(* Compute structure descriptions *)
-
-let add_to_tbl id decl tbl =
-  let decls =
-    try Tbl.find_str id tbl with Not_found -> [] in
-  Tbl.add id (decl :: decls) tbl
-
-let rec components_of_module ~deprecated ~loc env sub path mty =
-  {
-    deprecated;
-    loc;
-    comps = EnvLazy.create (env, sub, path, mty)
-  }
-
-and components_of_module_maker (env, sub, path, mty) =
-  match scrape_alias env mty with
-    Mty_signature sg ->
-      let c =
-        { comp_values = Tbl.empty;
-          comp_constrs = Tbl.empty;
-          comp_labels = Tbl.empty; comp_types = Tbl.empty;
-          comp_modules = Tbl.empty; comp_modtypes = Tbl.empty;
-          comp_components = Tbl.empty; comp_classes = Tbl.empty;
-          comp_cltypes = Tbl.empty } in
-      let pl, sub = prefix_idents path sub sg in
-      let env = ref env in
-      let pos = ref 0 in
-      List.iter2 (fun item path ->
-        match item with
-          Sig_value(id, decl) ->
-            let decl' = Subst.value_description sub decl in
-            c.comp_values <-
-              Tbl.add (Ident.name id) (decl', !pos) c.comp_values;
-            begin match decl.val_kind with
-              Val_prim _ -> () | _ -> incr pos
-            end
-        | Sig_type(id, decl, _) ->
-            let decl' = Subst.type_declaration sub decl in
-            Datarepr.set_row_name decl' (Subst.type_path sub (Path.Pident id));
-            let constructors =
-              List.map snd (Datarepr.constructors_of_type path decl') in
-            let labels =
-              List.map snd (Datarepr.labels_of_type path decl') in
-            c.comp_types <-
-              Tbl.add (Ident.name id)
-                ((decl', (constructors, labels)), nopos)
-                  c.comp_types;
-            List.iter
-              (fun descr ->
-                c.comp_constrs <-
-                  add_to_tbl descr.cstr_name descr c.comp_constrs)
-              constructors;
-            List.iter
-              (fun descr ->
-                c.comp_labels <-
-                  add_to_tbl descr.lbl_name descr c.comp_labels)
-              labels;
-            env := store_type_infos id decl !env
-        | Sig_typext(id, ext, _) ->
-            let ext' = Subst.extension_constructor sub ext in
-            let descr = Datarepr.extension_descr path ext' in
-            c.comp_constrs <-
-              add_to_tbl (Ident.name id) descr c.comp_constrs;
-            incr pos
-        | Sig_module(id, md, _) ->
-            let md' = EnvLazy.create (sub, md) in
-            c.comp_modules <-
-              Tbl.add (Ident.name id) (md', !pos) c.comp_modules;
-            let deprecated =
-              Builtin_attributes.deprecated_of_attrs md.md_attributes
-            in
-            let comps =
-              components_of_module ~deprecated ~loc:md.md_loc !env sub path
-                md.md_type
-            in
-            c.comp_components <-
-              Tbl.add (Ident.name id) (comps, !pos) c.comp_components;
-            env := store_module ~check:false id md !env;
-            incr pos
-        | Sig_modtype(id, decl) ->
-            let decl' = Subst.modtype_declaration sub decl in
-            c.comp_modtypes <-
-              Tbl.add (Ident.name id) (decl', nopos) c.comp_modtypes;
-            env := store_modtype id decl !env
-        | Sig_class(id, decl, _) ->
-            let decl' = Subst.class_declaration sub decl in
-            c.comp_classes <-
-              Tbl.add (Ident.name id) (decl', !pos) c.comp_classes;
-            incr pos
-        | Sig_class_type(id, decl, _) ->
-            let decl' = Subst.cltype_declaration sub decl in
-            c.comp_cltypes <-
-              Tbl.add (Ident.name id) (decl', !pos) c.comp_cltypes)
-        sg pl;
-        Some (Structure_comps c)
-  | Mty_functor(param, ty_arg, ty_res) ->
-        Some (Functor_comps {
-          fcomp_param = param;
-          (* fcomp_arg and fcomp_res must be prefixed eagerly, because
-             they are interpreted in the outer environment *)
-          fcomp_arg = may_map (Subst.modtype sub) ty_arg;
-          fcomp_res = Subst.modtype sub ty_res;
-          fcomp_cache = Hashtbl.create 17;
-          fcomp_subst_cache = Hashtbl.create 17 })
-  | Mty_ident _
-  | Mty_alias _ -> None
-
-(* Insertion of bindings by identifier + path *)
-
-and check_usage loc id warn tbl =
-  if not loc.Location.loc_ghost && Warnings.is_active (warn "") then begin
-    let name = Ident.name id in
-    let key = (name, loc) in
-    if Hashtbl.mem tbl key then ()
-    else let used = ref false in
-    Hashtbl.add tbl key (fun () -> used := true);
-    if not (name = "" || name.[0] = '_' || name.[0] = '#')
-    then
-      !add_delayed_check_forward
-        (fun () -> if not !used then Location.prerr_warning loc (warn name))
-  end;
-
-and check_value_name name loc =
-  (* Note: we could also check here general validity of the
-     identifier, to protect against bad identifiers forged by -pp or
-     -ppx preprocessors. *)
-  if name = "|." then raise (Error(Illegal_value_name(loc, name)))  
-  else if String.length name > 0 && (name.[0] = '#') then
-    for i = 1 to String.length name - 1 do
-      if name.[i] = '#' then
-        raise (Error(Illegal_value_name(loc, name)))
-    done
-
-
-and store_value ?check id decl env =
-  check_value_name (Ident.name id) decl.val_loc;
-  may (fun f -> check_usage decl.val_loc id f value_declarations) check;
-  { env with
-    values = IdTbl.add id decl env.values;
-    summary = Env_value(env.summary, id, decl) }
-
-and store_type ~check id info env =
-  let loc = info.type_loc in
-  if check then
-    check_usage loc id (fun s -> Warnings.Unused_type_declaration s)
-      type_declarations;
-  let path = Pident id in
-  let constructors = Datarepr.constructors_of_type path info in
-  let labels = Datarepr.labels_of_type path info in
-  let descrs = (List.map snd constructors, List.map snd labels) in
-
-  if check && not loc.Location.loc_ghost &&
-    Warnings.is_active (Warnings.Unused_constructor ("", false, false))
-  then begin
-    let ty = Ident.name id in
-    List.iter
-      begin fun (_, {cstr_name = c; _}) ->
-        let k = (ty, loc, c) in
-        if not (Hashtbl.mem used_constructors k) then
-          let used = constructor_usages () in
-          Hashtbl.add used_constructors k (add_constructor_usage used);
-          if not (ty = "" || ty.[0] = '_')
-          then !add_delayed_check_forward
-              (fun () ->
-                if not (is_in_signature env) && not used.cu_positive then
-                  Location.prerr_warning loc
-                    (Warnings.Unused_constructor
-                       (c, used.cu_pattern, used.cu_privatize)))
-      end
-      constructors
-  end;
-  { env with
-    constrs =
-      List.fold_right
-        (fun (id, descr) constrs -> TycompTbl.add id descr constrs)
-        constructors
-        env.constrs;
-    labels =
-      List.fold_right
-        (fun (id, descr) labels -> TycompTbl.add id descr labels)
-        labels
-        env.labels;
-    types =
-      IdTbl.add id (info, descrs) env.types;
-    summary = Env_type(env.summary, id, info) }
-
-and store_type_infos id info env =
-  (* Simplified version of store_type that doesn't compute and store
-     constructor and label infos, but simply record the arity and
-     manifest-ness of the type.  Used in components_of_module to
-     keep track of type abbreviations (e.g. type t = float) in the
-     computation of label representations. *)
-  { env with
-    types = IdTbl.add id (info,([],[]))
-        env.types;
-    summary = Env_type(env.summary, id, info) }
-
-and store_extension ~check id ext env =
-  let loc = ext.ext_loc in
-  if check && not loc.Location.loc_ghost &&
-    Warnings.is_active (Warnings.Unused_extension ("", false, false, false))
-  then begin
-    let is_exception = Path.same ext.ext_type_path Predef.path_exn in
-    let ty = Path.last ext.ext_type_path in
-    let n = Ident.name id in
-    let k = (ty, loc, n) in
-    if not (Hashtbl.mem used_constructors k) then begin
-      let used = constructor_usages () in
-      Hashtbl.add used_constructors k (add_constructor_usage used);
-      !add_delayed_check_forward
-        (fun () ->
-          if not (is_in_signature env) && not used.cu_positive then
-            Location.prerr_warning loc
-              (Warnings.Unused_extension
-                 (n, is_exception, used.cu_pattern, used.cu_privatize)
-              )
-        )
-    end;
-  end;
-  { env with
-    constrs = TycompTbl.add id
-                (Datarepr.extension_descr (Pident id) ext)
-                env.constrs;
-    summary = Env_extension(env.summary, id, ext) }
-
-and store_module ~check id md env =
-  let loc = md.md_loc in
-  if check then
-    check_usage loc id (fun s -> Warnings.Unused_module s)
-      module_declarations;
-
-  let deprecated = Builtin_attributes.deprecated_of_attrs md.md_attributes in
-  { env with
-    modules = IdTbl.add id (EnvLazy.create (Subst.identity, md)) env.modules;
-    components =
-      IdTbl.add id
-        (components_of_module ~deprecated ~loc:md.md_loc
-           env Subst.identity (Pident id) md.md_type)
-        env.components;
-    summary = Env_module(env.summary, id, md) }
-
-and store_modtype id info env =
-  { env with
-    modtypes = IdTbl.add id info env.modtypes;
-    summary = Env_modtype(env.summary, id, info) }
-
-and store_class id desc env =
-  { env with
-    classes = IdTbl.add id desc env.classes;
-    summary = Env_class(env.summary, id, desc) }
-
-and store_cltype id desc env =
-  { env with
-    cltypes = IdTbl.add id desc env.cltypes;
-    summary = Env_cltype(env.summary, id, desc) }
-
-(* Compute the components of a functor application in a path. *)
-
-let components_of_functor_appl f env p1 p2 =
-  try
-    Hashtbl.find f.fcomp_cache p2
-  with Not_found ->
-    let p = Papply(p1, p2) in
-    let sub = Subst.add_module f.fcomp_param p2 Subst.identity in
-    let mty = Subst.modtype sub f.fcomp_res in
-    let comps = components_of_module ~deprecated:None ~loc:Location.none
-        (*???*)
-        env Subst.identity p mty in
-    Hashtbl.add f.fcomp_cache p2 comps;
-    comps
-
-(* Define forward functions *)
-
-let _ =
-  components_of_module' := components_of_module;
-  components_of_functor_appl' := components_of_functor_appl;
-  components_of_module_maker' := components_of_module_maker
-
-(* Insertion of bindings by identifier *)
-
-let add_functor_arg id env =
-  {env with
-   functor_args = Ident.add id () env.functor_args;
-   summary = Env_functor_arg (env.summary, id)}
-
-let add_value ?check id desc env =
-  store_value ?check id desc env
-
-let add_type ~check id info env =
-  store_type ~check id info env
-
-and add_extension ~check id ext env =
-  store_extension ~check id ext env
-
-and add_module_declaration ?(arg=false) ~check id md env =
-  let env = store_module ~check id md env in
-  if arg then add_functor_arg id env else env
-
-and add_modtype id info env =
-  store_modtype id info env
-
-and add_class id ty env =
-  store_class id ty env
-
-and add_cltype id ty env =
-  store_cltype id ty env
-
-let add_module ?arg id mty env =
-  add_module_declaration ~check:false ?arg id (md mty) env
-
-let add_local_type path info env =
-  { env with
-    local_constraints = PathMap.add path info env.local_constraints }
-
-let add_local_constraint path info elv env =
-  match info with
-    {type_manifest = Some _; type_newtype_level = Some (lv, _)} ->
-      (* elv is the expansion level, lv is the definition level *)
-      let info = {info with type_newtype_level = Some (lv, elv)} in
-      add_local_type path info env
-  | _ -> assert false
-
-
-(* Insertion of bindings by name *)
-
-let enter store_fun name data env =
-  let id = Ident.create name in (id, store_fun id data env)
-
-let enter_value ?check = enter (store_value ?check)
-and enter_type = enter (store_type ~check:true)
-and enter_extension = enter (store_extension ~check:true)
-and enter_module_declaration ?arg id md env =
-  add_module_declaration ?arg ~check:true id md env
-  (* let (id, env) = enter store_module name md env in
-  (id, add_functor_arg ?arg id env) *)
-and enter_modtype = enter store_modtype
-and enter_class = enter store_class
-and enter_cltype = enter store_cltype
-
-let enter_module ?arg s mty env =
-  let id = Ident.create s in
-  (id, enter_module_declaration ?arg id (md mty) env)
-
-(* Insertion of all components of a signature *)
-
-let add_item comp env =
-  match comp with
-    Sig_value(id, decl)     -> add_value id decl env
-  | Sig_type(id, decl, _)   -> add_type ~check:false id decl env
-  | Sig_typext(id, ext, _)  -> add_extension ~check:false id ext env
-  | Sig_module(id, md, _)   -> add_module_declaration ~check:false id md env
-  | Sig_modtype(id, decl)   -> add_modtype id decl env
-  | Sig_class(id, decl, _)  -> add_class id decl env
-  | Sig_class_type(id, decl, _) -> add_cltype id decl env
-
-let rec add_signature sg env =
-  match sg with
-    [] -> env
-  | comp :: rem -> add_signature rem (add_item comp env)
-
-(* Open a signature path *)
-
-let add_components slot root env0 comps =
-  let add_l w comps env0 =
-    TycompTbl.add_open slot w comps env0
-  in
-
-  let add w comps env0 = IdTbl.add_open slot w root comps env0 in
-
-  let constrs =
-    add_l (fun x -> `Constructor x) comps.comp_constrs env0.constrs
-  in
-  let labels =
-    add_l (fun x -> `Label x) comps.comp_labels env0.labels
-  in
-
-  let values =
-    add (fun x -> `Value x) comps.comp_values env0.values
-  in
-  let types =
-    add (fun x -> `Type x) comps.comp_types env0.types
-  in
-  let modtypes =
-    add (fun x -> `Module_type x) comps.comp_modtypes env0.modtypes
-  in
-  let classes =
-    add (fun x -> `Class x) comps.comp_classes env0.classes
-  in
-  let cltypes =
-    add (fun x -> `Class_type x) comps.comp_cltypes env0.cltypes
-  in
-  let components =
-    add (fun x -> `Component x) comps.comp_components env0.components
-  in
-
-  let modules =
-    add (fun x -> `Module x) comps.comp_modules env0.modules
-  in
-
-  { env0 with
-    summary = Env_open(env0.summary, root);
-    constrs;
-    labels;
-    values;
-    types;
-    modtypes;
-    classes;
-    cltypes;
-    components;
-    modules;
-  }
-
-let open_signature slot root env0 =
-  match get_components (find_module_descr root env0) with
-  | Functor_comps _ -> None
-  | Structure_comps comps -> Some (add_components slot root env0 comps)
-
-
-(* Open a signature from a file *)
-
-let open_pers_signature name env =
-  match open_signature None (Pident(Ident.create_persistent name)) env with
-  | Some env -> env
-  | None -> assert false (* a compilation unit cannot refer to a functor *)
-
-let open_signature
-    ?(used_slot = ref false)
-    ?(loc = Location.none) ?(toplevel = false) ovf root env =
-  if not toplevel && ovf = Asttypes.Fresh && not loc.Location.loc_ghost
-     && (Warnings.is_active (Warnings.Unused_open "")
-         || Warnings.is_active (Warnings.Open_shadow_identifier ("", ""))
-         || Warnings.is_active (Warnings.Open_shadow_label_constructor ("","")))
-  then begin
-    let used = used_slot in
-    !add_delayed_check_forward
-      (fun () ->
-         if not !used then begin
-           used := true;
-           Location.prerr_warning loc (Warnings.Unused_open (Path.name root))
-         end
-      );
-    let shadowed = ref [] in
-    let slot s b =
-      begin match check_shadowing env b with
-      | Some kind when not (List.mem (kind, s) !shadowed) ->
-          shadowed := (kind, s) :: !shadowed;
-          let w =
-            match kind with
-            | "label" | "constructor" ->
-                Warnings.Open_shadow_label_constructor (kind, s)
-            | _ -> Warnings.Open_shadow_identifier (kind, s)
-          in
-          Location.prerr_warning loc w
-      | _ -> ()
-      end;
-      used := true
-    in
-    open_signature (Some slot) root env
-  end
-  else open_signature None root env
-
-(* Read a signature from a file *)
-
-let read_signature modname filename =
-  let ps = read_pers_struct modname filename in
-  Lazy.force ps.ps_sig
-
-(* Return the CRC of the interface of the given compilation unit *)
-
-let crc_of_unit name =
-  let ps = find_pers_struct name in
-  let crco =
-    try
-      List.assoc name ps.ps_crcs
-    with Not_found ->
-      assert false
-  in
-    match crco with
-      None -> assert false
-    | Some crc -> crc
-
-(* Return the list of imported interfaces with their CRCs *)
-
-let imports () =
-  let dont_record_crc_unit = !Clflags.dont_record_crc_unit in 
-  match dont_record_crc_unit with 
-  | None -> Consistbl.extract (StringSet.elements !imported_units) crc_units
-  | Some x -> 
-    Consistbl.extract 
-      (StringSet.fold 
-      (fun m acc -> if m = x then acc else m::acc) 
-      !imported_units []) crc_units
-(* Returns true if [s] is an opaque imported module  *)
-let is_imported_opaque s =
-  StringSet.mem s !imported_opaque_units
-
-(* Save a signature to a file *)
-
-let save_signature_with_imports ?check_exists ~deprecated sg modname filename imports =
-  (*prerr_endline filename;
-  List.iter (fun (name, crc) -> prerr_endline name) imports;*)
-  Btype.cleanup_abbrev ();
-  Subst.reset_for_saving ();
-  let sg = Subst.signature (Subst.for_saving Subst.identity) sg in
-  let flags =
-      (match deprecated with Some s -> [Deprecated s] | None -> [])
-  in
-  try
-    let cmi = {
-      cmi_name = modname;
-      cmi_sign = sg;
-      cmi_crcs = imports;
-      cmi_flags = flags;
-    } in
-    let crc =
-      create_cmi ?check_exists filename cmi in
-    (* Enter signature in persistent table so that imported_unit()
-       will also return its crc *)
-    let comps =
-      components_of_module ~deprecated ~loc:Location.none
-        empty Subst.identity
-        (Pident(Ident.create_persistent modname)) (Mty_signature sg) in
-    let ps =
-      { ps_name = modname;
-        ps_sig = lazy (Subst.signature Subst.identity sg);
-        ps_comps = comps;
-        ps_crcs = (cmi.cmi_name, Some crc) :: imports;
-        ps_filename = filename;
-        ps_flags = cmi.cmi_flags;
-      } in
-    save_pers_struct crc ps;
-    cmi
-  with exn ->
-    remove_file filename;
-    raise exn
-
-let save_signature ?check_exists ~deprecated sg modname filename =
-  save_signature_with_imports ?check_exists ~deprecated sg modname filename (imports())
-
-(* Folding on environments *)
-
-let find_all proj1 proj2 f lid env acc =
-  match lid with
-    | None ->
-      IdTbl.fold_name
-        (fun name (p, data) acc -> f name p data acc)
-        (proj1 env) acc
-    | Some l ->
-      let p, desc = lookup_module_descr l env in
-      begin match get_components desc with
-          Structure_comps c ->
-            Tbl.fold
-              (fun s (data, pos) acc -> f s (Pdot (p, s, pos)) data acc)
-              (proj2 c) acc
-        | Functor_comps _ ->
-            acc
-      end
-
-let find_all_simple_list proj1 proj2 f lid env acc =
-  match lid with
-    | None ->
-      TycompTbl.fold_name
-        (fun data acc -> f data acc)
-        (proj1 env) acc
-    | Some l ->
-      let (_p, desc) = lookup_module_descr l env in
-      begin match get_components desc with
-          Structure_comps c ->
-            Tbl.fold
-              (fun _s comps acc ->
-                match comps with
-                  [] -> acc
-                | data :: _ ->
-                  f data acc)
-              (proj2 c) acc
-        | Functor_comps _ ->
-            acc
-      end
-
-let fold_modules f lid env acc =
-  match lid with
-    | None ->
-      let acc =
-        IdTbl.fold_name
-          (fun name (p, data) acc ->
-             let data = EnvLazy.force subst_modtype_maker data in
-             f name p data acc
-          )
-          env.modules
-          acc
-      in
-      Hashtbl.fold
-        (fun name ps acc ->
-          match ps with
-              None -> acc
-            | Some ps ->
-              f name (Pident(Ident.create_persistent name))
-                     (md (Mty_signature (Lazy.force ps.ps_sig))) acc)
-        persistent_structures
-        acc
-    | Some l ->
-      let p, desc = lookup_module_descr l env in
-      begin match get_components desc with
-          Structure_comps c ->
-            Tbl.fold
-              (fun s (data, pos) acc ->
-                f s (Pdot (p, s, pos))
-                    (EnvLazy.force subst_modtype_maker data) acc)
-              c.comp_modules
-              acc
-        | Functor_comps _ ->
-            acc
-      end
-
-let fold_values f =
-  find_all (fun env -> env.values) (fun sc -> sc.comp_values) f
-and fold_constructors f =
-  find_all_simple_list (fun env -> env.constrs) (fun sc -> sc.comp_constrs) f
-and fold_labels f =
-  find_all_simple_list (fun env -> env.labels) (fun sc -> sc.comp_labels) f
-and fold_types f =
-  find_all (fun env -> env.types) (fun sc -> sc.comp_types) f
-and fold_modtypes f =
-  find_all (fun env -> env.modtypes) (fun sc -> sc.comp_modtypes) f
-and fold_classs f =
-  find_all (fun env -> env.classes) (fun sc -> sc.comp_classes) f
-and fold_cltypes f =
-  find_all (fun env -> env.cltypes) (fun sc -> sc.comp_cltypes) f
-
-
-(* Make the initial environment *)
-let initial_safe_string =
-  Predef.build_initial_env
-    (add_type ~check:false)
-    (add_extension ~check:false)
-    empty
-
-(* Return the environment summary *)
-
-let summary env =
-  if PathMap.is_empty env.local_constraints then env.summary
-  else Env_constraints (env.summary, env.local_constraints)
-
-let last_env = ref empty
-let last_reduced_env = ref empty
-
-let keep_only_summary env =
-  if !last_env == env then !last_reduced_env
-  else begin
-    let new_env =
-      {
-       empty with
-       summary = env.summary;
-       local_constraints = env.local_constraints;
-       flags = env.flags;
-      }
-    in
-    last_env := env;
-    last_reduced_env := new_env;
-    new_env
-  end
-
-
-let env_of_only_summary env_from_summary env =
-  let new_env = env_from_summary env.summary Subst.identity in
-  { new_env with
-    local_constraints = env.local_constraints;
-    flags = env.flags;
-  }
-
-(* Error report *)
-
-open Format
-
-let report_error ppf = function
-  | Illegal_renaming(modname, ps_name, filename) -> fprintf ppf
-      "Wrong file naming: %a@ contains the compiled interface for @ \
-       %s when %s was expected"
-      Location.print_filename filename ps_name modname
-  | Inconsistent_import(name, source1, source2) -> fprintf ppf
-      "@[<hov>The files %a@ and %a@ \
-              make inconsistent assumptions@ over interface %s@]"
-      Location.print_filename source1 Location.print_filename source2 name
-  | Need_recursive_types(import, export) ->
-      fprintf ppf
-        "@[<hov>Unit %s imports from %s, which uses recursive types.@ %s@]"
-        export import "The compilation flag -rectypes is required"
-  | Depend_on_unsafe_string_unit(import, export) ->
-      fprintf ppf
-        "@[<hov>Unit %s imports from %s, compiled with -unsafe-string.@ %s@]"
-        export import "This compiler has been configured in strict \
-                       safe-string mode (-force-safe-string)"
-  | Missing_module(_, path1, path2) ->
-      fprintf ppf "@[@[<hov>";
-      if Path.same path1 path2 then
-        fprintf ppf "Internal path@ %s@ is dangling." (Path.name path1)
-      else
-        fprintf ppf "Internal path@ %s@ expands to@ %s@ which is dangling."
-          (Path.name path1) (Path.name path2);
-      fprintf ppf "@]@ @[%s@ %s@ %s.@]@]"
-        "The compiled interface for module" (Ident.name (Path.head path2))
-        "was not found"
-  | Illegal_value_name(_loc, name) ->
-      fprintf ppf "'%s' is not a valid value identifier."
-        name
-
-let () =
-  Location.register_error_of_exn
-    (function
-      | Error (Missing_module (loc, _, _)
-              | Illegal_value_name (loc, _)
-               as err) when loc <> Location.none ->
-          Some (Location.error_of_printer loc report_error err)
-      | Error err -> Some (Location.error_of_printer_file report_error err)
-      | _ -> None
-    )
diff --git a/src/compiler-libs-406/env.mli b/src/compiler-libs-406/env.mli
deleted file mode 100644
index 7bde230a..00000000
--- a/src/compiler-libs-406/env.mli
+++ /dev/null
@@ -1,326 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Environment handling *)
-
-open Types
-
-module PathMap : Map.S with type key = Path.t
-                        and type 'a t = 'a Map.Make(Path).t
-
-type summary =
-    Env_empty
-  | Env_value of summary * Ident.t * value_description
-  | Env_type of summary * Ident.t * type_declaration
-  | Env_extension of summary * Ident.t * extension_constructor
-  | Env_module of summary * Ident.t * module_declaration
-  | Env_modtype of summary * Ident.t * modtype_declaration
-  | Env_class of summary * Ident.t * class_declaration
-  | Env_cltype of summary * Ident.t * class_type_declaration
-  | Env_open of summary * Path.t
-  | Env_functor_arg of summary * Ident.t
-  | Env_constraints of summary * type_declaration PathMap.t
-  | Env_copy_types of summary * string list
-
-type t
-
-val empty: t
-val initial_safe_string: t
-
-val diff: t -> t -> Ident.t list
-val copy_local: from:t -> t -> t
-
-type type_descriptions =
-    constructor_description list * label_description list
-
-(* For short-paths *)
-type iter_cont
-val iter_types:
-    (Path.t -> Path.t * (type_declaration * type_descriptions) -> unit) ->
-    t -> iter_cont
-val run_iter_cont: iter_cont list -> (Path.t * iter_cont) list
-val same_types: t -> t -> bool
-val used_persistent: unit -> Concr.t
-val find_shadowed_types: Path.t -> t -> Path.t list
-val without_cmis: ('a -> 'b) -> 'a -> 'b
-        (* [without_cmis f arg] applies [f] to [arg], but does not
-           allow opening cmis during its execution *)
-
-(* Lookup by paths *)
-
-val find_value: Path.t -> t -> value_description
-val find_type: Path.t -> t -> type_declaration
-val find_type_descrs: Path.t -> t -> type_descriptions
-val find_module: Path.t -> t -> module_declaration
-val find_modtype: Path.t -> t -> modtype_declaration
-val find_class: Path.t -> t -> class_declaration
-val find_cltype: Path.t -> t -> class_type_declaration
-
-val find_type_expansion:
-    Path.t -> t -> type_expr list * type_expr * int option
-val find_type_expansion_opt:
-    Path.t -> t -> type_expr list * type_expr * int option
-(* Find the manifest type information associated to a type for the sake
-   of the compiler's type-based optimisations. *)
-val find_modtype_expansion: Path.t -> t -> module_type
-val add_functor_arg: Ident.t -> t -> t
-val is_functor_arg: Path.t -> t -> bool
-val normalize_path: Location.t option -> t -> Path.t -> Path.t
-(* Normalize the path to a concrete value or module.
-   If the option is None, allow returning dangling paths.
-   Otherwise raise a Missing_module error, and may add forgotten
-   head as required global. *)
-val normalize_path_prefix: Location.t option -> t -> Path.t -> Path.t
-(* Only normalize the prefix part of the path *)
-val reset_required_globals: unit -> unit
-val get_required_globals: unit -> Ident.t list
-val add_required_global: Ident.t -> unit
-
-val has_local_constraints: t -> bool
-val add_gadt_instance_level: int -> t -> t
-val gadt_instance_level: t -> type_expr -> int option
-val add_gadt_instances: t -> int -> type_expr list -> unit
-val add_gadt_instance_chain: t -> int -> type_expr -> unit
-
-(* Lookup by long identifiers *)
-
-(* ?loc is used to report 'deprecated module' warnings *)
-
-val lookup_value:
-  ?loc:Location.t -> Longident.t -> t -> Path.t * value_description
-val lookup_constructor:
-  ?loc:Location.t -> Longident.t -> t -> constructor_description
-val lookup_all_constructors:
-  ?loc:Location.t ->
-  Longident.t -> t -> (constructor_description * (unit -> unit)) list
-val lookup_label:
-  ?loc:Location.t -> Longident.t -> t -> label_description
-val lookup_all_labels:
-  ?loc:Location.t ->
-  Longident.t -> t -> (label_description * (unit -> unit)) list
-val lookup_type:
-  ?loc:Location.t -> Longident.t -> t -> Path.t
-  (* Since 4.04, this function no longer returns [type_description].
-     To obtain it, you should either call [Env.find_type], or replace
-     it by [Typetexp.find_type] *)
-val lookup_module:
-  load:bool -> ?loc:Location.t -> Longident.t -> t -> Path.t
-val lookup_modtype:
-  ?loc:Location.t -> Longident.t -> t -> Path.t * modtype_declaration
-val lookup_class:
-  ?loc:Location.t -> Longident.t -> t -> Path.t * class_declaration
-val lookup_cltype:
-  ?loc:Location.t -> Longident.t -> t -> Path.t * class_type_declaration
-
-val copy_types: string list -> t -> t
-  (* Used only in Typecore.duplicate_ident_types. *)
-
-exception Recmodule
-  (* Raise by lookup_module when the identifier refers
-     to one of the modules of a recursive definition
-     during the computation of its approximation (see #5965). *)
-
-(* Insertion by identifier *)
-
-val add_value:
-    ?check:(string -> Warnings.t) -> Ident.t -> value_description -> t -> t
-val add_type: check:bool -> Ident.t -> type_declaration -> t -> t
-val add_extension: check:bool -> Ident.t -> extension_constructor -> t -> t
-val add_module: ?arg:bool -> Ident.t -> module_type -> t -> t
-val add_module_declaration: ?arg:bool -> check:bool -> Ident.t ->
-  module_declaration -> t -> t
-val add_modtype: Ident.t -> modtype_declaration -> t -> t
-val add_class: Ident.t -> class_declaration -> t -> t
-val add_cltype: Ident.t -> class_type_declaration -> t -> t
-val add_local_constraint: Path.t -> type_declaration -> int -> t -> t
-val add_local_type: Path.t -> type_declaration -> t -> t
-
-(* Insertion of all fields of a signature. *)
-
-val add_item: signature_item -> t -> t
-val add_signature: signature -> t -> t
-
-(* Insertion of all fields of a signature, relative to the given path.
-   Used to implement open. Returns None if the path refers to a functor,
-   not a structure. *)
-val open_signature:
-    ?used_slot:bool ref ->
-    ?loc:Location.t -> ?toplevel:bool -> Asttypes.override_flag -> Path.t ->
-      t -> t option
-
-val open_pers_signature: string -> t -> t
-
-(* Insertion by name *)
-
-val enter_value:
-    ?check:(string -> Warnings.t) ->
-    string -> value_description -> t -> Ident.t * t
-val enter_type: string -> type_declaration -> t -> Ident.t * t
-val enter_extension: string -> extension_constructor -> t -> Ident.t * t
-val enter_module: ?arg:bool -> string -> module_type -> t -> Ident.t * t
-val enter_module_declaration:
-    ?arg:bool -> Ident.t -> module_declaration -> t -> t
-val enter_modtype: string -> modtype_declaration -> t -> Ident.t * t
-val enter_class: string -> class_declaration -> t -> Ident.t * t
-val enter_cltype: string -> class_type_declaration -> t -> Ident.t * t
-
-(* Initialize the cache of in-core module interfaces. *)
-val reset_cache: unit -> unit
-
-(* To be called before each toplevel phrase. *)
-val reset_cache_toplevel: unit -> unit
-
-(* Remember the name of the current compilation unit. *)
-val set_unit_name: string -> unit
-val get_unit_name: unit -> string
-
-(* Read, save a signature to/from a file *)
-
-val read_signature: string -> string -> signature
-        (* Arguments: module name, file name. Results: signature. *)
-val save_signature:
-  ?check_exists:unit ->
-  deprecated:string option -> signature -> string -> string -> Cmi_format.cmi_infos
-        (* Arguments: signature, module name, file name. *)
-val save_signature_with_imports:
-  ?check_exists:unit -> 
-  deprecated:string option ->
-  signature -> string -> string -> (string * Digest.t option) list
-  -> Cmi_format.cmi_infos
-        (* Arguments: signature, module name, file name,
-           imported units with their CRCs. *)
-
-(* Return the CRC of the interface of the given compilation unit *)
-
-val crc_of_unit: string -> Digest.t
-
-(* Return the set of compilation units imported, with their CRC *)
-
-val imports: unit -> (string * Digest.t option) list
-
-(* [is_imported_opaque md] returns true if [md] is an opaque imported module  *)
-val is_imported_opaque: string -> bool
-
-(* Direct access to the table of imported compilation units with their CRC *)
-
-val crc_units: Consistbl.t
-val add_import: string -> unit
-
-(* Summaries -- compact representation of an environment, to be
-   exported in debugging information. *)
-
-val summary: t -> summary
-
-(* Return an equivalent environment where all fields have been reset,
-   except the summary. The initial environment can be rebuilt from the
-   summary, using Envaux.env_of_only_summary. *)
-
-val keep_only_summary : t -> t
-val env_of_only_summary : (summary -> Subst.t -> t) -> t -> t
-
-(* Error report *)
-
-type error =
-  | Illegal_renaming of string * string * string
-  | Inconsistent_import of string * string * string
-  | Need_recursive_types of string * string
-  | Depend_on_unsafe_string_unit of string * string
-  | Missing_module of Location.t * Path.t * Path.t
-  | Illegal_value_name of Location.t * string
-
-exception Error of error
-
-open Format
-
-val report_error: formatter -> error -> unit
-
-
-val mark_value_used: t -> string -> value_description -> unit
-val mark_module_used: t -> string -> Location.t -> unit
-val mark_type_used: t -> string -> type_declaration -> unit
-
-type constructor_usage = Positive | Pattern | Privatize
-val mark_constructor_used:
-    constructor_usage -> t -> string -> type_declaration -> string -> unit
-val mark_constructor:
-    constructor_usage -> t -> string -> constructor_description -> unit
-val mark_extension_used:
-    constructor_usage -> t -> extension_constructor -> string -> unit
-
-val in_signature: bool -> t -> t
-val implicit_coercion: t -> t
-
-val is_in_signature: t -> bool
-
-val set_value_used_callback:
-    string -> value_description -> (unit -> unit) -> unit
-val set_type_used_callback:
-    string -> type_declaration -> ((unit -> unit) -> unit) -> unit
-
-(* Forward declaration to break mutual recursion with Includemod. *)
-val check_modtype_inclusion:
-      (loc:Location.t -> t -> module_type -> Path.t -> module_type -> unit) ref
-(* Forward declaration to break mutual recursion with Typecore. *)
-val add_delayed_check_forward: ((unit -> unit) -> unit) ref
-(* Forward declaration to break mutual recursion with Mtype. *)
-val strengthen:
-    (aliasable:bool -> t -> module_type -> Path.t -> module_type) ref
-(* Forward declaration to break mutual recursion with Ctype. *)
-val same_constr: (t -> type_expr -> type_expr -> bool) ref
-
-(** Folding over all identifiers (for analysis purpose) *)
-
-val fold_values:
-  (string -> Path.t -> value_description -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-val fold_types:
-  (string -> Path.t -> type_declaration * type_descriptions -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-val fold_constructors:
-  (constructor_description -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-val fold_labels:
-  (label_description -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-
-(** Persistent structures are only traversed if they are already loaded. *)
-val fold_modules:
-  (string -> Path.t -> module_declaration -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-
-val fold_modtypes:
-  (string -> Path.t -> modtype_declaration -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-val fold_classs:
-  (string -> Path.t -> class_declaration -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-val fold_cltypes:
-  (string -> Path.t -> class_type_declaration -> 'a -> 'a) ->
-  Longident.t option -> t -> 'a -> 'a
-
-(** Utilities *)
-val scrape_alias: t -> module_type -> module_type
-val check_value_name: string -> Location.t -> unit
-
-module Persistent_signature : sig
-  type t =
-    { filename : string; (** Name of the file containing the signature. *)
-      cmi : Cmi_format.cmi_infos }
-
-  (** Function used to load a persistent signature. The default is to look for
-      the .cmi file in the load path. This function can be overridden to load
-      it from memory, for instance to build a self-contained toplevel. *)
-  val load : (unit_name:string -> t option) ref
-end
diff --git a/src/compiler-libs-406/ext_pervasives.ml b/src/compiler-libs-406/ext_pervasives.ml
deleted file mode 100644
index 8682641a..00000000
--- a/src/compiler-libs-406/ext_pervasives.ml
+++ /dev/null
@@ -1,109 +0,0 @@
-(* Copyright (C) 2015-2016 Bloomberg Finance L.P.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * In addition to the permissions granted to you by the LGPL, you may combine
- * or link a "work that uses the Library" with a publicly distributed version
- * of this file to produce a combined library or application, then distribute
- * that combined work under the terms of your choosing, with no requirement
- * to comply with the obligations normally placed on you by section 4 of the
- * LGPL version 3 (or the corresponding section of a later version of the LGPL
- * should you choose to use a later version).
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *)
-
-
-
-
-
-
-external reraise: exn -> 'a = "%reraise"
-
-let finally v ~clean:action f   = 
-  match f v with
-  | exception e -> 
-    action v ;
-    reraise e 
-  | e ->  action v ; e 
-
-(* let try_it f  =   
-   try ignore (f ()) with _ -> () *)
-
-let with_file_as_chan filename f = 
-  finally (open_out_bin filename) ~clean:close_out f 
-
-
-let max_int (x : int) y =
-    if x >= y then x else y
-
-let min_int (x : int) y = 
-  if x < y then x else y 
-  
-let max_int_option (x : int option) y = 
-  match x, y with 
-  | None, _ -> y 
-  | Some _, None ->  x 
-  | Some x0 , Some y0 -> 
-      if x0 >= y0 then x else y
-
-
-(* external id : 'a -> 'a = "%identity" *)
-
-(* 
-let hash_variant s =
-  let accu = ref 0 in
-  for i = 0 to String.length s - 1 do
-    accu := 223 * !accu + Char.code s.[i]
-  done;
-  (* reduce to 31 bits *)
-  accu := !accu land (1 lsl 31 - 1);
-  (* make it signed for 64 bits architectures *)
-  if !accu > 0x3FFFFFFF then !accu - (1 lsl 31) else !accu *)
-
-(* let todo loc = 
-   failwith (loc ^ " Not supported yet")
-*)
-
-
-
-let rec int_of_string_aux s acc off len =  
-  if off >= len then acc 
-  else 
-    let d = (Char.code (String.unsafe_get s off) - 48) in 
-    if d >=0 && d <= 9 then 
-      int_of_string_aux s (10*acc + d) (off + 1) len
-    else -1 (* error *)
-
-let nat_of_string_exn (s : string) = 
-  let acc = int_of_string_aux s 0 0 (String.length s) in 
-  if acc < 0 then invalid_arg s 
-  else acc 
-
-
-(** return index *)
-let parse_nat_of_string (s : string) (cursor : int ref) =  
-  let current = !cursor in 
-  assert (current >= 0);
-  let acc = ref 0 in 
-  let s_len = String.length s in 
-  let todo = ref true in 
-  let cur = ref current in 
-  while !todo && !cursor < s_len do 
-    let d = Char.code (String.unsafe_get s !cur) - 48 in 
-    if d >=0 && d <= 9 then begin 
-      acc := 10* !acc + d;
-      incr cur
-    end else todo := false
-  done ;
-  cursor := !cur;
-  !acc 
\ No newline at end of file
diff --git a/src/compiler-libs-406/ident.ml b/src/compiler-libs-406/ident.ml
deleted file mode 100644
index 70828ed2..00000000
--- a/src/compiler-libs-406/ident.ml
+++ /dev/null
@@ -1,249 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Format
-
-type t = { stamp: int; name: string; mutable flags: int }
-
-let global_flag = 1
-let predef_exn_flag = 2
-
-(* A stamp of 0 denotes a persistent identifier *)
-
-let currentstamp = ref 0
-
-let create s =
-  incr currentstamp;
-  { name = s; stamp = !currentstamp; flags = 0 }
-
-let create_predef_exn s =
-  incr currentstamp;
-  { name = s; stamp = !currentstamp; flags = predef_exn_flag }
-
-let create_persistent s =
-  { name = s; stamp = 0; flags = global_flag }
-
-let rename i =
-  incr currentstamp;
-  { i with stamp = !currentstamp }
-
-let name i = i.name
-
-let unique_name i = i.name ^ "_" ^ string_of_int i.stamp
-
-let unique_toplevel_name i = i.name ^ "/" ^ string_of_int i.stamp
-
-let persistent i = (i.stamp = 0)
-
-let equal i1 i2 = i1.name = i2.name
-
-let same i1 i2 = i1 = i2
-  (* Possibly more efficient version (with a real compiler, at least):
-       if i1.stamp <> 0
-       then i1.stamp = i2.stamp
-       else i2.stamp = 0 && i1.name = i2.name *)
-
-let compare i1 i2 = compare i1 i2
-
-let binding_time i = i.stamp
-
-let current_time() = !currentstamp
-let set_current_time t = currentstamp := max !currentstamp t
-
-let reinit_level = ref (-1)
-
-let reinit () =
-  if !reinit_level < 0
-  then reinit_level := !currentstamp
-  else currentstamp := !reinit_level
-
-let hide i =
-  { i with stamp = -1 }
-
-let make_global i =
-  i.flags <- i.flags lor global_flag
-
-let global i =
-  (i.flags land global_flag) <> 0
-
-let is_predef_exn i =
-  (i.flags land predef_exn_flag) <> 0
-
-let print ppf i =
-  match i.stamp with
-  | 0 -> fprintf ppf "%s!" i.name
-  | -1 -> fprintf ppf "%s#" i.name
-  | n -> fprintf ppf "%s/%i%s" i.name n (if global i then "g" else "")
-
-type 'a tbl =
-    Empty
-  | Node of 'a tbl * 'a data * 'a tbl * int
-
-and 'a data =
-  { ident: t;
-    data: 'a;
-    previous: 'a data option }
-
-let empty = Empty
-
-(* Inline expansion of height for better speed
- * let height = function
- *     Empty -> 0
- *   | Node(_,_,_,h) -> h
- *)
-
-let mknode l d r =
-  let hl = match l with Empty -> 0 | Node(_,_,_,h) -> h
-  and hr = match r with Empty -> 0 | Node(_,_,_,h) -> h in
-  Node(l, d, r, (if hl >= hr then hl + 1 else hr + 1))
-
-let balance l d r =
-  let hl = match l with Empty -> 0 | Node(_,_,_,h) -> h
-  and hr = match r with Empty -> 0 | Node(_,_,_,h) -> h in
-  if hl > hr + 1 then
-    match l with
-    | Node (ll, ld, lr, _)
-      when (match ll with Empty -> 0 | Node(_,_,_,h) -> h) >=
-           (match lr with Empty -> 0 | Node(_,_,_,h) -> h) ->
-        mknode ll ld (mknode lr d r)
-    | Node (ll, ld, Node(lrl, lrd, lrr, _), _) ->
-        mknode (mknode ll ld lrl) lrd (mknode lrr d r)
-    | _ -> assert false
-  else if hr > hl + 1 then
-    match r with
-    | Node (rl, rd, rr, _)
-      when (match rr with Empty -> 0 | Node(_,_,_,h) -> h) >=
-           (match rl with Empty -> 0 | Node(_,_,_,h) -> h) ->
-        mknode (mknode l d rl) rd rr
-    | Node (Node (rll, rld, rlr, _), rd, rr, _) ->
-        mknode (mknode l d rll) rld (mknode rlr rd rr)
-    | _ -> assert false
-  else
-    mknode l d r
-
-let rec add id data = function
-    Empty ->
-      Node(Empty, {ident = id; data = data; previous = None}, Empty, 1)
-  | Node(l, k, r, h) ->
-      let c = compare id.name k.ident.name in
-      if c = 0 then
-        Node(l, {ident = id; data = data; previous = Some k}, r, h)
-      else if c < 0 then
-        balance (add id data l) k r
-      else
-        balance l k (add id data r)
-
-let rec find_stamp s = function
-    None ->
-      raise Not_found
-  | Some k ->
-      if k.ident.stamp = s then k.data else find_stamp s k.previous
-
-let rec find_same id = function
-    Empty ->
-      raise Not_found
-  | Node(l, k, r, _) ->
-      let c = compare id.name k.ident.name in
-      if c = 0 then
-        if id.stamp = k.ident.stamp
-        then k.data
-        else find_stamp id.stamp k.previous
-      else
-        find_same id (if c < 0 then l else r)
-
-let rec find_name name = function
-    Empty ->
-      raise Not_found
-  | Node(l, k, r, _) ->
-      let c = compare name k.ident.name in
-      if c = 0 then
-        k.ident, k.data
-      else
-        find_name name (if c < 0 then l else r)
-
-let rec get_all = function
-  | None -> []
-  | Some k -> (k.ident, k.data) :: get_all k.previous
-
-let rec find_all name = function
-    Empty ->
-      []
-  | Node(l, k, r, _) ->
-      let c = compare name k.ident.name in
-      if c = 0 then
-        (k.ident, k.data) :: get_all k.previous
-      else
-        find_all name (if c < 0 then l else r)
-
-let rec fold_aux f stack accu = function
-    Empty ->
-      begin match stack with
-        [] -> accu
-      | a :: l -> fold_aux f l accu a
-      end
-  | Node(l, k, r, _) ->
-      fold_aux f (l :: stack) (f k accu) r
-
-let fold_name f tbl accu = fold_aux (fun k -> f k.ident k.data) [] accu tbl
-
-let rec fold_data f d accu =
-  match d with
-    None -> accu
-  | Some k -> f k.ident k.data (fold_data f k.previous accu)
-
-let fold_all f tbl accu =
-  fold_aux (fun k -> fold_data f (Some k)) [] accu tbl
-
-(* let keys tbl = fold_name (fun k _ accu -> k::accu) tbl [] *)
-
-let rec iter f = function
-    Empty -> ()
-  | Node(l, k, r, _) ->
-      iter f l; f k.ident k.data; iter f r
-
-(* Idents for sharing keys *)
-
-(* They should be 'totally fresh' -> neg numbers *)
-let key_name = ""
-
-let make_key_generator () =
-  let c = ref 1 in
-  fun id ->
-    let stamp = !c in
-    decr c ;
-    { id with name = key_name; stamp = stamp; }
-
-let compare x y =
-  let c = x.stamp - y.stamp in
-  if c <> 0 then c
-  else
-    let c = compare x.name y.name in
-    if c <> 0 then c
-    else
-      compare x.flags y.flags
-
-let output oc id = output_string oc (unique_name id)
-let hash i = (Char.code i.name.[0]) lxor i.stamp
-
-let original_equal = equal
-include Identifiable.Make (struct
-  type nonrec t = t
-  let compare = compare
-  let output = output
-  let print = print
-  let hash = hash
-  let equal = same
-end)
-let equal = original_equal
diff --git a/src/compiler-libs-406/ident.mli b/src/compiler-libs-406/ident.mli
deleted file mode 100644
index c2983edb..00000000
--- a/src/compiler-libs-406/ident.mli
+++ /dev/null
@@ -1,73 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Identifiers (unique names) *)
-
-type t = { stamp: int; name: string; mutable flags: int }
-
-include Identifiable.S with type t := t
-(* Notes:
-   - [equal] compares identifiers by name
-   - [compare x y] is 0 if [same x y] is true.
-   - [compare] compares identifiers by binding location
-*)
-
-
-val create: string -> t
-val create_persistent: string -> t
-val create_predef_exn: string -> t
-val rename: t -> t
-val name: t -> string
-val unique_name: t -> string
-val unique_toplevel_name: t -> string
-val persistent: t -> bool
-val same: t -> t -> bool
-        (* Compare identifiers by binding location.
-           Two identifiers are the same either if they are both
-           non-persistent and have been created by the same call to
-           [new], or if they are both persistent and have the same
-           name. *)
-val compare: t -> t -> int
-val hide: t -> t
-        (* Return an identifier with same name as the given identifier,
-           but stamp different from any stamp returned by new.
-           When put in a 'a tbl, this identifier can only be looked
-           up by name. *)
-
-val make_global: t -> unit
-val global: t -> bool
-val is_predef_exn: t -> bool
-
-val binding_time: t -> int
-val current_time: unit -> int
-val set_current_time: int -> unit
-val reinit: unit -> unit
-
-type 'a tbl
-        (* Association tables from identifiers to type 'a. *)
-
-val empty: 'a tbl
-val add: t -> 'a -> 'a tbl -> 'a tbl
-val find_same: t -> 'a tbl -> 'a
-val find_name: string -> 'a tbl -> t * 'a
-val find_all: string -> 'a tbl -> (t * 'a) list
-val fold_name: (t -> 'a -> 'b -> 'b) -> 'a tbl -> 'b -> 'b
-val fold_all: (t -> 'a -> 'b -> 'b) -> 'a tbl -> 'b -> 'b
-val iter: (t -> 'a -> unit) -> 'a tbl -> unit
-
-
-(* Idents for sharing keys *)
-
-val make_key_generator : unit -> (t -> t)
diff --git a/src/compiler-libs-406/identifiable.ml b/src/compiler-libs-406/identifiable.ml
deleted file mode 100644
index 6ee0519a..00000000
--- a/src/compiler-libs-406/identifiable.ml
+++ /dev/null
@@ -1,254 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                       Pierre Chambart, OCamlPro                        *)
-(*           Mark Shinwell and Leo White, Jane Street Europe              *)
-(*                                                                        *)
-(*   Copyright 2013--2016 OCamlPro SAS                                    *)
-(*   Copyright 2014--2016 Jane Street Group LLC                           *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-module type Thing = sig
-  type t
-
-  include Hashtbl.HashedType with type t := t
-  include Map.OrderedType with type t := t
-
-  val output : out_channel -> t -> unit
-  val print : Format.formatter -> t -> unit
-end
-
-module type Set = sig
-  module T : Set.OrderedType
-  include Set.S
-    with type elt = T.t
-     and type t = Set.Make (T).t
-
-  val output : out_channel -> t -> unit
-  val print : Format.formatter -> t -> unit
-  val to_string : t -> string
-  val of_list : elt list -> t
-  val map : (elt -> elt) -> t -> t
-end
-
-module type Map = sig
-  module T : Map.OrderedType
-  include Map.S
-    with type key = T.t
-     and type 'a t = 'a Map.Make (T).t
-
-  val filter_map : (key -> 'a -> 'b option) -> 'a t -> 'b t
-  val of_list : (key * 'a) list -> 'a t
-
-  val disjoint_union : ?eq:('a -> 'a -> bool) -> ?print:(Format.formatter -> 'a -> unit) -> 'a t -> 'a t -> 'a t
-
-  val union_right : 'a t -> 'a t -> 'a t
-
-  val union_left : 'a t -> 'a t -> 'a t
-
-  val union_merge : ('a -> 'a -> 'a) -> 'a t -> 'a t -> 'a t
-  val rename : key t -> key -> key
-  val map_keys : (key -> key) -> 'a t -> 'a t
-  val keys : 'a t -> Set.Make(T).t
-  val data : 'a t -> 'a list
-  val of_set : (key -> 'a) -> Set.Make(T).t -> 'a t
-  val transpose_keys_and_data : key t -> key t
-  val transpose_keys_and_data_set : key t -> Set.Make(T).t t
-  val print :
-    (Format.formatter -> 'a -> unit) -> Format.formatter -> 'a t -> unit
-end
-
-module type Tbl = sig
-  module T : sig
-    type t
-    include Map.OrderedType with type t := t
-    include Hashtbl.HashedType with type t := t
-  end
-  include Hashtbl.S
-    with type key = T.t
-     and type 'a t = 'a Hashtbl.Make (T).t
-
-  val to_list : 'a t -> (T.t * 'a) list
-  val of_list : (T.t * 'a) list -> 'a t
-
-  val to_map : 'a t -> 'a Map.Make(T).t
-  val of_map : 'a Map.Make(T).t -> 'a t
-  val memoize : 'a t -> (key -> 'a) -> key -> 'a
-  val map : 'a t -> ('a -> 'b) -> 'b t
-end
-
-module Pair (A : Thing) (B : Thing) : Thing with type t = A.t * B.t = struct
-  type t = A.t * B.t
-
-  let compare (a1, b1) (a2, b2) =
-    let c = A.compare a1 a2 in
-    if c <> 0 then c
-    else B.compare b1 b2
-
-  let output oc (a, b) = Printf.fprintf oc " (%a, %a)" A.output a B.output b
-  let hash (a, b) = Hashtbl.hash (A.hash a, B.hash b)
-  let equal (a1, b1) (a2, b2) = A.equal a1 a2 && B.equal b1 b2
-  let print ppf (a, b) = Format.fprintf ppf " (%a, @ %a)" A.print a B.print b
-end
-
-module Make_map (T : Thing) = struct
-  include Map.Make (T)
-
-  let filter_map f t  =
-    fold (fun id v map ->
-        match f id v with
-        | None -> map
-        | Some r -> add id r map) t empty
-
-  let of_list l =
-    List.fold_left (fun map (id, v) -> add id v map) empty l
-
-  let disjoint_union ?eq ?print m1 m2 =
-    union (fun id v1 v2 ->
-        let ok = match eq with
-          | None -> false
-          | Some eq -> eq v1 v2
-        in
-        if not ok then
-          let err =
-            match print with
-            | None ->
-              Format.asprintf "Map.disjoint_union %a" T.print id
-            | Some print ->
-              Format.asprintf "Map.disjoint_union %a => %a <> %a"
-                T.print id print v1 print v2
-          in
-          Misc.fatal_error err
-        else Some v1)
-      m1 m2
-
-  let union_right m1 m2 =
-    merge (fun _id x y -> match x, y with
-        | None, None -> None
-        | None, Some v
-        | Some v, None
-        | Some _, Some v -> Some v)
-      m1 m2
-
-  let union_left m1 m2 = union_right m2 m1
-
-  let union_merge f m1 m2 =
-    let aux _ m1 m2 =
-      match m1, m2 with
-      | None, m | m, None -> m
-      | Some m1, Some m2 -> Some (f m1 m2)
-    in
-    merge aux m1 m2
-
-  let rename m v =
-    try find v m
-    with Not_found -> v
-
-  let map_keys f m =
-    of_list (List.map (fun (k, v) -> f k, v) (bindings m))
-
-  let print f ppf s =
-    let elts ppf s = iter (fun id v ->
-        Format.fprintf ppf "@ (@[%a@ %a@])" T.print id f v) s in
-    Format.fprintf ppf "@[<1>{@[%a@ @]}@]" elts s
-
-  module T_set = Set.Make (T)
-
-  let keys map = fold (fun k _ set -> T_set.add k set) map T_set.empty
-
-  let data t = List.map snd (bindings t)
-
-  let of_set f set = T_set.fold (fun e map -> add e (f e) map) set empty
-
-  let transpose_keys_and_data map = fold (fun k v m -> add v k m) map empty
-  let transpose_keys_and_data_set map =
-    fold (fun k v m ->
-        let set =
-          match find v m with
-          | exception Not_found ->
-            T_set.singleton k
-          | set ->
-            T_set.add k set
-        in
-        add v set m)
-      map empty
-end
-
-module Make_set (T : Thing) = struct
-  include Set.Make (T)
-
-  let output oc s =
-    Printf.fprintf oc " ( ";
-    iter (fun v -> Printf.fprintf oc "%a " T.output v) s;
-    Printf.fprintf oc ")"
-
-  let print ppf s =
-    let elts ppf s = iter (fun e -> Format.fprintf ppf "@ %a" T.print e) s in
-    Format.fprintf ppf "@[<1>{@[%a@ @]}@]" elts s
-
-  let to_string s = Format.asprintf "%a" print s
-
-  let of_list l = match l with
-    | [] -> empty
-    | [t] -> singleton t
-    | t :: q -> List.fold_left (fun acc e -> add e acc) (singleton t) q
-
-  let map f s = of_list (List.map f (elements s))
-end
-
-module Make_tbl (T : Thing) = struct
-  include Hashtbl.Make (T)
-
-  module T_map = Make_map (T)
-
-  let to_list t =
-    fold (fun key datum elts -> (key, datum)::elts) t []
-
-  let of_list elts =
-    let t = create 42 in
-    List.iter (fun (key, datum) -> add t key datum) elts;
-    t
-
-  let to_map v = fold T_map.add v T_map.empty
-
-  let of_map m =
-    let t = create (T_map.cardinal m) in
-    T_map.iter (fun k v -> add t k v) m;
-    t
-
-  let memoize t f = fun key ->
-    try find t key with
-    | Not_found ->
-      let r = f key in
-      add t key r;
-      r
-
-  let map t f =
-    of_map (T_map.map f (to_map t))
-end
-
-module type S = sig
-  type t
-
-  module T : Thing with type t = t
-  include Thing with type t := T.t
-
-  module Set : Set with module T := T
-  module Map : Map with module T := T
-  module Tbl : Tbl with module T := T
-end
-
-module Make (T : Thing) = struct
-  module T = T
-  include T
-
-  module Set = Make_set (T)
-  module Map = Make_map (T)
-  module Tbl = Make_tbl (T)
-end
diff --git a/src/compiler-libs-406/identifiable.mli b/src/compiler-libs-406/identifiable.mli
deleted file mode 100644
index 46e14545..00000000
--- a/src/compiler-libs-406/identifiable.mli
+++ /dev/null
@@ -1,107 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                       Pierre Chambart, OCamlPro                        *)
-(*           Mark Shinwell and Leo White, Jane Street Europe              *)
-(*                                                                        *)
-(*   Copyright 2013--2016 OCamlPro SAS                                    *)
-(*   Copyright 2014--2016 Jane Street Group LLC                           *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Uniform interface for common data structures over various things. *)
-
-module type Thing = sig
-  type t
-
-  include Hashtbl.HashedType with type t := t
-  include Map.OrderedType with type t := t
-
-  val output : out_channel -> t -> unit
-  val print : Format.formatter -> t -> unit
-end
-
-module Pair : functor (A : Thing) (B : Thing) -> Thing with type t = A.t * B.t
-
-module type Set = sig
-  module T : Set.OrderedType
-  include Set.S
-    with type elt = T.t
-     and type t = Set.Make (T).t
-
-  val output : out_channel -> t -> unit
-  val print : Format.formatter -> t -> unit
-  val to_string : t -> string
-  val of_list : elt list -> t
-  val map : (elt -> elt) -> t -> t
-end
-
-module type Map = sig
-  module T : Map.OrderedType
-  include Map.S
-    with type key = T.t
-     and type 'a t = 'a Map.Make (T).t
-
-  val filter_map : (key -> 'a -> 'b option) -> 'a t -> 'b t
-  val of_list : (key * 'a) list -> 'a t
-
-  (** [disjoint_union m1 m2] contains all bindings from [m1] and
-      [m2]. If some binding is present in both and the associated
-      value is not equal, a Fatal_error is raised *)
-  val disjoint_union : ?eq:('a -> 'a -> bool) -> ?print:(Format.formatter -> 'a -> unit) -> 'a t -> 'a t -> 'a t
-
-  (** [union_right m1 m2] contains all bindings from [m1] and [m2]. If
-      some binding is present in both, the one from [m2] is taken *)
-  val union_right : 'a t -> 'a t -> 'a t
-
-  (** [union_left m1 m2 = union_right m2 m1] *)
-  val union_left : 'a t -> 'a t -> 'a t
-
-  val union_merge : ('a -> 'a -> 'a) -> 'a t -> 'a t -> 'a t
-  val rename : key t -> key -> key
-  val map_keys : (key -> key) -> 'a t -> 'a t
-  val keys : 'a t -> Set.Make(T).t
-  val data : 'a t -> 'a list
-  val of_set : (key -> 'a) -> Set.Make(T).t -> 'a t
-  val transpose_keys_and_data : key t -> key t
-  val transpose_keys_and_data_set : key t -> Set.Make(T).t t
-  val print :
-    (Format.formatter -> 'a -> unit) -> Format.formatter -> 'a t -> unit
-end
-
-module type Tbl = sig
-  module T : sig
-    type t
-    include Map.OrderedType with type t := t
-    include Hashtbl.HashedType with type t := t
-  end
-  include Hashtbl.S
-    with type key = T.t
-     and type 'a t = 'a Hashtbl.Make (T).t
-
-  val to_list : 'a t -> (T.t * 'a) list
-  val of_list : (T.t * 'a) list -> 'a t
-
-  val to_map : 'a t -> 'a Map.Make(T).t
-  val of_map : 'a Map.Make(T).t -> 'a t
-  val memoize : 'a t -> (key -> 'a) -> key -> 'a
-  val map : 'a t -> ('a -> 'b) -> 'b t
-end
-
-module type S = sig
-  type t
-
-  module T : Thing with type t = t
-  include Thing with type t := T.t
-
-  module Set : Set with module T := T
-  module Map : Map with module T := T
-  module Tbl : Tbl with module T := T
-end
-
-module Make (T : Thing) : S with type t := T.t
diff --git a/src/compiler-libs-406/lexer.ml b/src/compiler-libs-406/lexer.ml
deleted file mode 100644
index c615b58e..00000000
--- a/src/compiler-libs-406/lexer.ml
+++ /dev/null
@@ -1,3105 +0,0 @@
-# 18 "ml/lexer.mll"
- 
-open Lexing
-open Misc
-open Parser
-
-type directive_value =
-  | Dir_bool of bool 
-  | Dir_float of float
-  | Dir_int of int
-  | Dir_string of string
-  | Dir_null 
-
-type directive_type = 
-  | Dir_type_bool 
-  | Dir_type_float 
-  | Dir_type_int 
-  | Dir_type_string 
-  | Dir_type_null 
-
-let type_of_directive x =
-  match x with 
-  | Dir_bool _ -> Dir_type_bool
-  | Dir_float _ -> Dir_type_float
-  | Dir_int _ -> Dir_type_int
-  | Dir_string _ -> Dir_type_string
-  | Dir_null -> Dir_type_null
-
-let string_of_type_directive x = 
-  match x with 
-  | Dir_type_bool  -> "bool"
-  | Dir_type_float  -> "float"
-  | Dir_type_int  -> "int"
-  | Dir_type_string  -> "string"
-  | Dir_type_null -> "null"
-
-type error =
-  | Illegal_character of char
-  | Illegal_escape of string
-  | Unterminated_comment of Location.t
-  | Unterminated_string
-  | Unterminated_string_in_comment of Location.t * Location.t
-  | Keyword_as_label of string
-  | Invalid_literal of string
-  | Invalid_directive of string * string option
-  | Unterminated_paren_in_conditional
-  | Unterminated_if
-  | Unterminated_else 
-  | Unexpected_token_in_conditional 
-  | Expect_hash_then_in_conditional
-  | Illegal_semver of string
-  | Unexpected_directive 
-  | Conditional_expr_expected_type of directive_type * directive_type
-                           
-;;
-
-exception Error of error * Location.t;;
-
-let assert_same_type  lexbuf x y = 
-  let lhs = type_of_directive x in let rhs =  type_of_directive y  in
-  if lhs <> rhs then 
-    raise (Error(Conditional_expr_expected_type(lhs,rhs), Location.curr lexbuf))
-  else y
-
-let directive_built_in_values  =
-  Hashtbl.create 51
-
-
-let replace_directive_built_in_value k v = 
-  Hashtbl.replace directive_built_in_values k v 
-
-let remove_directive_built_in_value k  = 
-  Hashtbl.replace directive_built_in_values k Dir_null
-
-let replace_directive_int k v = 
-  Hashtbl.replace directive_built_in_values k (Dir_int v)
-
-let replace_directive_bool k v = 
-  Hashtbl.replace directive_built_in_values k (Dir_bool v)
-
-let replace_directive_string k v = 
-  Hashtbl.replace directive_built_in_values k (Dir_string v)
-
-let () =
-  (* Note we use {!Config} instead of {!Sys} becasue 
-     we want to overwrite in some cases with the 
-     same stdlib
-  *)
-  let version = 
-    Config.version (* so that it can be overridden*)
-  in
-  replace_directive_built_in_value "OCAML_VERSION" 
-    (Dir_string version);
-  replace_directive_built_in_value "OS_TYPE" 
-    (Dir_string Sys.os_type);
-  replace_directive_built_in_value "BIG_ENDIAN" 
-    (Dir_bool Sys.big_endian)
-
-let find_directive_built_in_value k =
-  Hashtbl.find directive_built_in_values k 
-
-let iter_directive_built_in_value f = Hashtbl.iter f directive_built_in_values
-
-(*
-   {[
-     # semver 0 "12";;
-     - : int * int * int * string = (12, 0, 0, "");;
-     # semver 0 "12.3";;
-     - : int * int * int * string = (12, 3, 0, "");;
-       semver 0 "12.3.10";;
-     - : int * int * int * string = (12, 3, 10, "");;
-     # semver 0 "12.3.10+x";;
-     - : int * int * int * string = (12, 3, 10, "+x")
-   ]}
-*)    
-let zero = Char.code '0' 
-let dot = Char.code '.'
-let semantic_version_parse str start  last_index = 
-  let rec aux start  acc last_index =
-    if start <= last_index then
-      let c = Char.code (String.unsafe_get str start) in
-      if c = dot then (acc, start + 1) (* consume [4.] instead of [4]*)
-      else 
-        let v =  c - zero in
-        if v >=0 && v <= 9  then
-          aux (start + 1) (acc * 10 + v) last_index
-        else (acc , start)
-    else (acc, start)
-  in
-  let major, major_end =  aux start 0 last_index  in
-  let minor, minor_end = aux major_end 0 last_index in
-  let patch, patch_end = aux minor_end 0 last_index in 
-  let additional = String.sub str patch_end (last_index - patch_end  +1) in
-  (major, minor, patch), additional
-
-(** 
-   {[
-     semver Location.none "1.2.3" "~1.3.0" = false;;
-     semver Location.none "1.2.3" "^1.3.0" = true ;;
-     semver Location.none "1.2.3" ">1.3.0" = false ;;
-     semver Location.none "1.2.3" ">=1.3.0" = false ;;
-     semver Location.none "1.2.3" "<1.3.0" = true ;;
-     semver Location.none "1.2.3" "<=1.3.0" = true ;;
-   ]}
-*)
-let semver loc lhs str =
-  let last_index = String.length str - 1 in 
-  if last_index < 0 then raise (Error(Illegal_semver str, loc))
-  else 
-    let pred, ((major, minor, _patch) as version, _) = 
-      let v = String.unsafe_get str 0 in 
-      match v with
-      | '>' -> 
-          if last_index = 0 then raise (Error(Illegal_semver str, loc)) else 
-          if String.unsafe_get str 1 = '=' then 
-            `Ge, semantic_version_parse str 2 last_index
-          else `Gt, semantic_version_parse str 1 last_index
-      | '<' 
-        ->
-          if last_index = 0 then raise (Error(Illegal_semver str, loc)) else 
-          if String.unsafe_get str 1 = '=' then 
-            `Le, semantic_version_parse str 2 last_index
-          else `Lt, semantic_version_parse str 1 last_index
-      | '^' 
-        -> `Compatible, semantic_version_parse str 1 last_index
-      | '~' ->  `Approximate, semantic_version_parse str 1 last_index
-      | _ -> `Exact, semantic_version_parse str 0 last_index 
-    in 
-    let ((l_major, l_minor, _l_patch) as lversion,_) =
-      semantic_version_parse lhs 0 (String.length lhs - 1) in 
-    match pred with 
-    | `Ge -> lversion >= version 
-    | `Gt -> lversion > version 
-    | `Le -> lversion <= version
-    | `Lt -> lversion < version 
-    | `Approximate -> major = l_major && minor = l_minor 
-    |  `Compatible -> major = l_major
-    | `Exact -> lversion = version 
-
-
-let pp_directive_value fmt (x : directive_value) =
-  match x with
-  | Dir_bool b -> Format.pp_print_bool fmt b
-  | Dir_int b -> Format.pp_print_int fmt b
-  | Dir_float b -> Format.pp_print_float fmt b
-  | Dir_string s  -> Format.fprintf fmt "%S" s
-  | Dir_null -> Format.pp_print_string fmt "null"    
-
-let list_variables fmt = 
-  iter_directive_built_in_value 
-    (fun s  dir_value ->
-       Format.fprintf
-         fmt "@[%s@ %a@]@."
-         s pp_directive_value dir_value
-    )
-
-let defined str =
-  begin match  find_directive_built_in_value str with 
-  |  Dir_null -> false 
-  | _ ->  true
-  | exception _ -> 
-      try ignore @@ Sys.getenv str; true with _ ->  false 
-  end
-
-let query _loc str =
-  begin match find_directive_built_in_value str with
-  | Dir_null -> Dir_bool false
-  | v -> v
-  | exception Not_found ->
-      begin match Sys.getenv str with 
-      | v -> 
-          begin 
-            try Dir_bool (bool_of_string v) with 
-              _ -> 
-                begin 
-                  try Dir_int (int_of_string v )
-                  with 
-                    _ -> 
-                      begin try (Dir_float (float_of_string v)) 
-                      with _ -> Dir_string v
-                      end
-                end
-          end
-      | exception Not_found -> 
-          Dir_bool false
-      end
-  end
-
-
-let define_key_value key v  =
-  if String.length key > 0
-      && Char.uppercase_ascii (key.[0]) = key.[0] then 
-    begin 
-      replace_directive_built_in_value key
-      begin
-        (* NEED Sync up across {!lexer.mll} {!bspp.ml} and here,
-           TODO: put it in {!lexer.mll}
-        *)
-        try Dir_bool (bool_of_string v) with 
-          _ -> 
-          begin 
-            try Dir_int (int_of_string v )
-            with 
-              _ -> 
-              begin try (Dir_float (float_of_string v)) 
-                with _ -> Dir_string v
-              end
-          end
-      end;
-    true
-    end
-  else false 
-
-let cvt_int_literal s =
-  - int_of_string ("-" ^ s)
-  
-let value_of_token loc (t : Parser.token)  = 
-  match t with 
-  | INT (i,None) -> Dir_int (cvt_int_literal i) 
-  | STRING (s,_) -> Dir_string s 
-  | FLOAT (s,None)  -> Dir_float (float_of_string s)
-  | TRUE -> Dir_bool true
-  | FALSE -> Dir_bool false
-  | UIDENT s -> query loc s 
-  | _ -> raise (Error (Unexpected_token_in_conditional, loc))
-
-
-let directive_parse token_with_comments lexbuf =
-  let look_ahead = ref None in
-  let token () : Parser.token =
-    let v = !look_ahead in
-    match v with 
-    | Some v -> 
-        look_ahead := None ;
-        v
-    | None ->
-       let rec skip () = 
-        match token_with_comments lexbuf  with
-        | COMMENT _ 
-        | DOCSTRING _ -> skip ()
-        | EOF -> raise (Error (Unterminated_if, Location.curr lexbuf)) 
-        | t -> t 
-        in  skip ()
-  in
-  let push e =
-    (* INVARIANT: only look at most one token *)
-    assert (!look_ahead = None);
-    look_ahead := Some e 
-  in
-  let rec
-    token_op calc   ~no  lhs   =
-    match token () with 
-    | (LESS 
-    | GREATER 
-    | INFIXOP0 "<=" 
-    | INFIXOP0 ">=" 
-    | EQUAL
-    | INFIXOP0 "<>" as op) ->
-        let f =  
-          match op with 
-          | LESS -> (<) 
-          | GREATER -> (>)
-          | INFIXOP0 "<=" -> (<=)
-          | EQUAL -> (=)
-          | INFIXOP0 "<>" -> (<>) 
-          | _ -> assert false
-        in 
-        let curr_loc = Location.curr lexbuf in 
-        let rhs = value_of_token curr_loc (token ()) in 
-        not calc ||
-        f lhs (assert_same_type lexbuf lhs rhs)
-    | INFIXOP0 "=~" -> 
-        not calc ||
-        begin match lhs with 
-        | Dir_string s ->
-            let curr_loc = Location.curr lexbuf in 
-            let rhs = value_of_token curr_loc (token ()) in 
-            begin match rhs with 
-            | Dir_string rhs -> 
-                semver curr_loc s rhs
-            | _ -> 
-                raise
-                  (Error
-                     ( Conditional_expr_expected_type
-                         (Dir_type_string, type_of_directive lhs), Location.curr lexbuf))
-            end
-        | _ -> raise
-                 (Error
-                    ( Conditional_expr_expected_type
-                        (Dir_type_string, type_of_directive lhs), Location.curr lexbuf))
-        end
-    | e -> no e 
-  and
-    parse_or calc : bool =
-    parse_or_aux calc (parse_and calc)
-  and  (* a || (b || (c || d))*)
-    parse_or_aux calc v : bool =
-    (* let l = v  in *)
-    match token () with
-    | BARBAR ->
-        let b =   parse_or (calc && not v)  in
-        v || b 
-    | e -> push e ; v
-  and parse_and calc = 
-    parse_and_aux calc (parse_relation calc)
-  and parse_and_aux calc v = (* a && (b && (c && d)) *)
-    (* let l = v  in *)
-    match token () with
-    | AMPERAMPER ->
-        let b =  parse_and (calc && v) in
-        v && b
-    | e -> push e ; v
-  and parse_relation (calc : bool) : bool  =
-    let curr_token = token () in
-    let curr_loc = Location.curr lexbuf in
-    match curr_token with
-    | TRUE -> true 
-    | FALSE -> false
-    | UIDENT v ->
-        let value_v = query curr_loc v in
-        token_op calc 
-          ~no:(fun e -> push e ;
-                match value_v with 
-                | Dir_bool b -> b 
-                | _ -> 
-                    let ty = type_of_directive value_v in
-                    raise
-                      (Error(Conditional_expr_expected_type (Dir_type_bool, ty),
-                             curr_loc)))
-          value_v
-    | INT (v,None) -> 
-      let num_v = cvt_int_literal v in 
-      token_op calc
-          ~no:(fun e -> 
-                push e; 
-                num_v <> 0
-              )
-          (Dir_int num_v)
-    | FLOAT (v,None) -> 
-        token_op calc
-          ~no:(fun _e -> 
-              raise (Error(Conditional_expr_expected_type(Dir_type_bool, Dir_type_float),
-                           curr_loc)))
-          (Dir_float (float_of_string v))
-    | STRING (v,_) -> 
-        token_op calc
-          ~no:(fun _e ->
-              raise (Error
-                       (Conditional_expr_expected_type(Dir_type_bool, Dir_type_string),
-                        curr_loc)))
-          (Dir_string v)
-    | LIDENT ("defined" | "undefined" as r) ->
-        let t = token () in 
-        let loc = Location.curr lexbuf in
-        begin match t with
-        | UIDENT s -> 
-            not calc || 
-            if r.[0] = 'u' then 
-              not @@ defined s
-            else defined s 
-        | _ -> raise (Error (Unexpected_token_in_conditional, loc))
-        end
-    | LPAREN ->
-        let v = parse_or calc in
-        begin match token () with
-        | RPAREN ->  v
-        | _ -> raise (Error(Unterminated_paren_in_conditional, Location.curr lexbuf))
-        end 
-
-    | _ -> raise (Error (Unexpected_token_in_conditional, curr_loc))
-  in
-  let v = parse_or true in
-  begin match token () with
-  | THEN | EOL ->  v 
-  | _ -> raise (Error (Expect_hash_then_in_conditional, Location.curr lexbuf))
-  end
-
-
-type dir_conditional =
-  | Dir_if_true
-  | Dir_if_false
-  | Dir_out 
-
-(* let string_of_dir_conditional (x : dir_conditional) = *)
-(*   match x with  *)
-(*   | Dir_if_true -> "Dir_if_true" *)
-(*   | Dir_if_false -> "Dir_if_false" *)
-(*   | Dir_out -> "Dir_out" *)
-
-let is_elif (i : Parser.token ) =
-  match i with
-  | LIDENT "elif" -> true
-  | _ -> false (* avoid polymorphic equal *)
-
-
-(* The table of keywords *)
-
-let keyword_table =
-  create_hashtable 149 [
-    "and", AND;
-    "as", AS;
-    "assert", ASSERT;
-    "begin", BEGIN;
-    "class", CLASS;
-    "constraint", CONSTRAINT;
-    "do", DO;
-    "done", DONE;
-    "downto", DOWNTO;
-    "else", ELSE;
-    "end", END;
-    "exception", EXCEPTION;
-    "external", EXTERNAL;
-    "false", FALSE;
-    "for", FOR;
-    "fun", FUN;
-    "function", FUNCTION;
-    "functor", FUNCTOR;
-    "if", IF;
-    "in", IN;
-    "include", INCLUDE;
-    "inherit", INHERIT;
-    "initializer", INITIALIZER;
-    "lazy", LAZY;
-    "let", LET;
-    "match", MATCH;
-    "method", METHOD;
-    "module", MODULE;
-    "mutable", MUTABLE;
-    "new", NEW;
-    "nonrec", NONREC;
-    "object", OBJECT;
-    "of", OF;
-    "open", OPEN;
-    "or", OR;
-(*  "parser", PARSER; *)
-    "private", PRIVATE;
-    "rec", REC;
-    "sig", SIG;
-    "struct", STRUCT;
-    "then", THEN;
-    "to", TO;
-    "true", TRUE;
-    "try", TRY;
-    "type", TYPE;
-    "val", VAL;
-    "virtual", VIRTUAL;
-    "when", WHEN;
-    "while", WHILE;
-    "with", WITH;
-
-    "lor", INFIXOP3("lor"); (* Should be INFIXOP2 *)
-    "lxor", INFIXOP3("lxor"); (* Should be INFIXOP2 *)
-    "mod", INFIXOP3("mod");
-    "land", INFIXOP3("land");
-    "lsl", INFIXOP4("lsl");
-    "lsr", INFIXOP4("lsr");
-    "asr", INFIXOP4("asr")
-]
-
-(* To buffer string literals *)
-
-let string_buffer = Buffer.create 256
-let reset_string_buffer () = Buffer.reset string_buffer
-let get_stored_string () = Buffer.contents string_buffer
-
-let store_string_char c = Buffer.add_char string_buffer c
-let store_string_utf_8_uchar u = Buffer.add_utf_8_uchar string_buffer u
-let store_string s = Buffer.add_string string_buffer s
-let store_lexeme lexbuf = store_string (Lexing.lexeme lexbuf)
-
-(* To store the position of the beginning of a string and comment *)
-let string_start_loc = ref Location.none;;
-let comment_start_loc = ref [];;
-let in_comment () = !comment_start_loc <> [];;
-let is_in_string = ref false
-let in_string () = !is_in_string
-let print_warnings = ref true
-let if_then_else = ref Dir_out
-let sharp_look_ahead = ref None
-let update_if_then_else v = 
-  (* Format.fprintf Format.err_formatter "@[update %s \n@]@." (string_of_dir_conditional v); *)
-  if_then_else := v
-
-(* Escaped chars are interpreted in strings unless they are in comments. *)
-let store_escaped_char lexbuf c =
-  if in_comment () then store_lexeme lexbuf else store_string_char c
-
-let store_escaped_uchar lexbuf u =
-  if in_comment () then store_lexeme lexbuf else store_string_utf_8_uchar u
-
-let with_comment_buffer comment lexbuf =
-  let start_loc = Location.curr lexbuf  in
-  comment_start_loc := [start_loc];
-  reset_string_buffer ();
-  let end_loc = comment lexbuf in
-  let s = get_stored_string () in
-  reset_string_buffer ();
-  let loc = { start_loc with Location.loc_end = end_loc.Location.loc_end } in
-  s, loc
-
-(* To translate escape sequences *)
-
-let hex_digit_value d = (* assert (d in '0'..'9' 'a'..'f' 'A'..'F') *)
-  let d = Char.code d in
-  if d >= 97 then d - 87 else
-  if d >= 65 then d - 55 else
-  d - 48
-
-let hex_num_value lexbuf ~first ~last =
-  let rec loop acc i = match i > last with
-  | true -> acc
-  | false ->
-      let value = hex_digit_value (Lexing.lexeme_char lexbuf i) in
-      loop (16 * acc + value) (i + 1)
-  in
-  loop 0 first
-
-let char_for_backslash = function
-  | 'n' -> '\010'
-  | 'r' -> '\013'
-  | 'b' -> '\008'
-  | 't' -> '\009'
-  | c   -> c
-
-let char_for_decimal_code lexbuf i =
-  let c = 100 * (Char.code(Lexing.lexeme_char lexbuf i) - 48) +
-           10 * (Char.code(Lexing.lexeme_char lexbuf (i+1)) - 48) +
-                (Char.code(Lexing.lexeme_char lexbuf (i+2)) - 48) in
-  if not (Uchar.is_valid c ) then
-    if in_comment ()
-    then 'x'
-    else raise (Error(Illegal_escape (Lexing.lexeme lexbuf),
-                      Location.curr lexbuf))
-  else (Obj.magic (c : int) : char)
-
-let char_for_octal_code lexbuf i =
-  let c = 64 * (Char.code(Lexing.lexeme_char lexbuf i) - 48) +
-           8 * (Char.code(Lexing.lexeme_char lexbuf (i+1)) - 48) +
-               (Char.code(Lexing.lexeme_char lexbuf (i+2)) - 48) in
-  Char.chr c
-
-let char_for_hexadecimal_code lexbuf i =
-  let byte = hex_num_value lexbuf ~first:i ~last:(i+1) in
-  Char.chr byte
-
-let uchar_for_uchar_escape lexbuf =
-  let err e =
-    raise
-      (Error (Illegal_escape (Lexing.lexeme lexbuf ^ e), Location.curr lexbuf))
-  in
-  let len = Lexing.lexeme_end lexbuf - Lexing.lexeme_start lexbuf in
-  let first = 3 (* skip opening \u{ *) in
-  let last = len - 2 (* skip closing } *) in
-  let digit_count = last - first + 1 in
-  match digit_count > 6 with
-  | true -> err ", too many digits, expected 1 to 6 hexadecimal digits"
-  | false ->
-      let cp = hex_num_value lexbuf ~first ~last in
-      if Uchar.is_valid cp then Uchar.unsafe_of_int cp else
-      err (", " ^ Printf.sprintf "%X" cp ^ " is not a Unicode scalar value")
-
-(* recover the name from a LABEL or OPTLABEL token *)
-
-let get_label_name lexbuf =
-  let s = Lexing.lexeme lexbuf in
-  let name = String.sub s 1 (String.length s - 2) in
-  if Hashtbl.mem keyword_table name then
-    raise (Error(Keyword_as_label name, Location.curr lexbuf));
-  name
-;;
-
-(* Update the current location with file name and line number. *)
-
-let update_loc lexbuf file line absolute chars =
-  let pos = lexbuf.lex_curr_p in
-  let new_file = match file with
-                 | None -> pos.pos_fname
-                 | Some s -> s
-  in
-  lexbuf.lex_curr_p <- { pos with
-    pos_fname = new_file;
-    pos_lnum = if absolute then line else pos.pos_lnum + line;
-    pos_bol = pos.pos_cnum - chars;
-  }
-;;
-
-let preprocessor = ref None
-
-let escaped_newlines = ref false
-
-
-let handle_docstrings = ref true
-let comment_list = ref []
-
-let add_comment com =
-  comment_list := com :: !comment_list
-
-let add_docstring_comment ds =
-  let com =
-    ("*" ^ Docstrings.docstring_body ds, Docstrings.docstring_loc ds)
-  in
-    add_comment com
-
-let comments () = List.rev !comment_list
-
-(* Error report *)
-
-open Format
-
-let report_error ppf = function
-  | Illegal_character c ->
-      fprintf ppf "Illegal character (%s)" (Char.escaped c)
-  | Illegal_escape s ->
-      fprintf ppf "Illegal backslash escape in string or character (%s)" s
-  | Unterminated_comment _ ->
-      fprintf ppf "Comment not terminated"
-  | Unterminated_string ->
-      fprintf ppf "String literal not terminated"
-  | Unterminated_string_in_comment (_, loc) ->
-      fprintf ppf "This comment contains an unterminated string literal@.\
-                   %aString literal begins here"
-              Location.print_error loc
-  | Keyword_as_label kwd ->
-      fprintf ppf "`%s' is a keyword, it cannot be used as label name" kwd
-  | Invalid_literal s ->
-      fprintf ppf "Invalid literal %s" s
-  | Invalid_directive (dir, explanation) ->
-      fprintf ppf "Invalid lexer directive %S" dir;
-      begin match explanation with
-        | None -> ()
-        | Some expl -> fprintf ppf ": %s" expl
-      end
-  | Unterminated_if -> 
-      fprintf ppf "#if not terminated"
-  | Unterminated_else -> 
-      fprintf ppf "#else not terminated"
-  | Unexpected_directive -> fprintf ppf "Unexpected directive"
-  | Unexpected_token_in_conditional -> 
-      fprintf ppf "Unexpected token in conditional predicate"
-  | Unterminated_paren_in_conditional ->
-    fprintf ppf "Unterminated parens in conditional predicate"
-  | Expect_hash_then_in_conditional -> 
-      fprintf ppf "Expect `then` after conditional predicate"
-  | Conditional_expr_expected_type (a,b) -> 
-      fprintf ppf "Conditional expression type mismatch (%s,%s)" 
-        (string_of_type_directive a )
-        (string_of_type_directive b )
-  | Illegal_semver s -> 
-      fprintf ppf "Illegal semantic version string %s" s
-
-let () =
-  Location.register_error_of_exn
-    (function
-      | Error (err, loc) ->
-          Some (Location.error_of_printer loc report_error err)
-      | _ ->
-          None
-    )
-
-
-# 702 "ml/lexer.ml"
-let __ocaml_lex_tables = {
-  Lexing.lex_base =
-   "\000\000\166\255\167\255\094\000\129\000\164\000\199\000\234\000\
-    \013\001\190\255\048\001\085\001\198\255\041\001\124\001\159\001\
-    \069\000\084\000\193\001\228\001\216\255\218\255\221\255\007\002\
-    \102\002\137\002\087\000\125\000\167\002\240\255\251\002\079\003\
-    \163\003\247\003\081\004\173\004\001\005\138\000\254\255\001\000\
-    \005\000\255\255\006\000\007\000\091\005\121\005\250\255\205\005\
-    \248\255\033\006\117\006\201\006\029\007\113\007\197\007\025\008\
-    \109\008\193\008\021\009\105\009\129\000\189\009\017\010\101\010\
-    \185\010\013\011\024\002\196\255\239\255\135\002\104\011\094\000\
-    \095\000\011\000\238\255\237\255\232\255\138\011\164\000\034\002\
-    \104\000\236\255\064\002\105\000\235\255\054\002\074\002\109\000\
-    \234\255\177\011\110\000\233\255\118\000\228\255\127\000\227\255\
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-    \121\012\156\012\191\012\213\255\208\255\209\255\210\255\206\255\
-    \226\012\114\000\089\000\199\255\200\255\201\255\097\000\186\255\
-    \184\255\193\255\005\013\189\255\191\255\040\013\075\013\110\013\
-    \145\013\125\004\243\255\244\255\186\000\245\255\141\001\143\013\
-    \253\255\122\000\131\000\255\255\254\255\252\255\175\013\010\014\
-    \159\000\164\000\195\000\251\255\250\255\249\255\044\014\154\002\
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-    \220\000\142\001\245\255\246\255\247\255\221\000\154\014\255\255\
-    \248\255\098\000\188\014\199\000\098\004\253\255\220\000\230\000\
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-    \250\014\032\015\249\255\018\001\051\001\252\255\061\015\254\255\
-    \255\255\034\001\035\001\253\255\090\015\203\000\206\000\012\001\
-    \016\001\231\000\025\001\231\000\019\000\255\255";
-  Lexing.lex_backtrk =
-   "\255\255\255\255\255\255\086\000\085\000\082\000\081\000\074\000\
-    \072\000\255\255\063\000\060\000\255\255\053\000\052\000\050\000\
-    \048\000\044\000\041\000\077\000\255\255\255\255\255\255\032\000\
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-    \089\000\255\255\255\255\255\255\080\000\255\255\255\255\255\255\
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-    \010\000\012\000\255\255\255\255\255\255\255\255\255\255\255\255\
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-    \001\000\255\255\255\255\255\255\255\255\255\255";
-  Lexing.lex_default =
-   "\001\000\000\000\000\000\255\255\255\255\255\255\255\255\255\255\
-    \255\255\000\000\255\255\255\255\000\000\255\255\255\255\255\255\
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-    \210\000\255\255\210\000\255\255\255\255\000\000";
-  Lexing.lex_trans =
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-    \198\000\198\000\198\000\198\000\198\000\198\000\198\000\198\000\
-    \198\000\198\000\198\000\198\000\198\000\198\000\198\000\198\000\
-    \255\255\204\000\198\000\204\000\204\000\204\000\204\000\204\000\
-    \204\000\204\000\204\000\204\000\204\000\204\000\204\000\204\000\
-    \204\000\204\000\204\000\204\000\204\000\204\000\204\000\204\000\
-    \204\000\204\000\204\000\204\000\204\000\255\255\255\255\204\000\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255";
-  Lexing.lex_base_code =
-   "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\010\000\036\000\022\000\000\000\
-    \000\000\000\000\005\000\000\000\039\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\001\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\002\000\
-    \005\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000";
-  Lexing.lex_backtrk_code =
-   "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\053\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000";
-  Lexing.lex_default_code =
-   "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\031\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000";
-  Lexing.lex_trans_code =
-   "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\001\000\000\000\050\000\050\000\000\000\009\000\050\000\
-    \000\000\000\000\000\000\009\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \001\000\000\000\009\000\001\000\000\000\009\000\000\000\034\000\
-    \000\000\000\000\009\000\000\000\012\000\001\000\000\000\000\000\
-    \004\000\004\000\004\000\004\000\004\000\004\000\004\000\004\000\
-    \004\000\004\000\017\000\017\000\017\000\017\000\017\000\017\000\
-    \017\000\017\000\017\000\017\000\001\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\017\000\017\000\017\000\017\000\
-    \017\000\017\000\017\000\017\000\017\000\017\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-    \000\000\000\000\000\000\000\000\000\000";
-  Lexing.lex_check_code =
-   "\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\024\000\105\000\174\000\183\000\105\000\106\000\184\000\
-    \255\255\255\255\255\255\100\000\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \024\000\255\255\105\000\000\000\255\255\106\000\255\255\106\000\
-    \255\255\255\255\100\000\255\255\100\000\101\000\255\255\255\255\
-    \024\000\024\000\024\000\024\000\024\000\024\000\024\000\024\000\
-    \024\000\024\000\100\000\100\000\100\000\100\000\100\000\100\000\
-    \100\000\100\000\100\000\100\000\101\000\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\101\000\101\000\101\000\101\000\
-    \101\000\101\000\101\000\101\000\101\000\101\000\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \105\000\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\255\
-    \255\255\255\255\255\255\255\255\255\255";
-  Lexing.lex_code =
-   "\255\005\255\255\007\255\006\255\255\007\255\255\009\255\008\255\
-    \255\006\255\007\255\255\004\255\000\005\001\006\002\007\255\009\
-    \255\255\008\255\009\255\255\000\005\001\006\004\008\003\009\002\
-    \007\255\001\255\255\000\001\255";
-}
-
-let rec token lexbuf =
-  lexbuf.Lexing.lex_mem <- Array.make 10 (-1); __ocaml_lex_token_rec lexbuf 0
-and __ocaml_lex_token_rec lexbuf __ocaml_lex_state =
-  match Lexing.new_engine __ocaml_lex_tables __ocaml_lex_state lexbuf with
-      | 0 ->
-# 751 "ml/lexer.mll"
-                 (
-      if not !escaped_newlines then
-        raise (Error(Illegal_character (Lexing.lexeme_char lexbuf 0),
-                     Location.curr lexbuf));
-      update_loc lexbuf None 1 false 0;
-      token lexbuf )
-# 2017 "ml/lexer.ml"
-
-  | 1 ->
-# 758 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false 0;
-        EOL )
-# 2023 "ml/lexer.ml"
-
-  | 2 ->
-# 761 "ml/lexer.mll"
-      ( token lexbuf )
-# 2028 "ml/lexer.ml"
-
-  | 3 ->
-# 763 "ml/lexer.mll"
-      ( UNDERSCORE )
-# 2033 "ml/lexer.ml"
-
-  | 4 ->
-# 765 "ml/lexer.mll"
-      ( TILDE )
-# 2038 "ml/lexer.ml"
-
-  | 5 ->
-# 767 "ml/lexer.mll"
-      ( LABEL (get_label_name lexbuf) )
-# 2043 "ml/lexer.ml"
-
-  | 6 ->
-# 769 "ml/lexer.mll"
-      ( QUESTION )
-# 2048 "ml/lexer.ml"
-
-  | 7 ->
-# 771 "ml/lexer.mll"
-      ( OPTLABEL (get_label_name lexbuf) )
-# 2053 "ml/lexer.ml"
-
-  | 8 ->
-# 773 "ml/lexer.mll"
-      ( let s = Lexing.lexeme lexbuf in
-        try Hashtbl.find keyword_table s
-        with Not_found -> LIDENT s )
-# 2060 "ml/lexer.ml"
-
-  | 9 ->
-# 777 "ml/lexer.mll"
-      ( UIDENT(Lexing.lexeme lexbuf) )
-# 2065 "ml/lexer.ml"
-
-  | 10 ->
-# 778 "ml/lexer.mll"
-                ( INT (Lexing.lexeme lexbuf, None) )
-# 2070 "ml/lexer.ml"
-
-  | 11 ->
-let
-# 779 "ml/lexer.mll"
-                    lit
-# 2076 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf lexbuf.Lexing.lex_start_pos (lexbuf.Lexing.lex_curr_pos + -1)
-and
-# 779 "ml/lexer.mll"
-                                              modif
-# 2081 "ml/lexer.ml"
-= Lexing.sub_lexeme_char lexbuf (lexbuf.Lexing.lex_curr_pos + -1) in
-# 780 "ml/lexer.mll"
-      ( INT (lit, Some modif) )
-# 2085 "ml/lexer.ml"
-
-  | 12 ->
-# 782 "ml/lexer.mll"
-      ( FLOAT (Lexing.lexeme lexbuf, None) )
-# 2090 "ml/lexer.ml"
-
-  | 13 ->
-let
-# 783 "ml/lexer.mll"
-                                            lit
-# 2096 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf lexbuf.Lexing.lex_start_pos (lexbuf.Lexing.lex_curr_pos + -1)
-and
-# 783 "ml/lexer.mll"
-                                                                      modif
-# 2101 "ml/lexer.ml"
-= Lexing.sub_lexeme_char lexbuf (lexbuf.Lexing.lex_curr_pos + -1) in
-# 784 "ml/lexer.mll"
-      ( FLOAT (lit, Some modif) )
-# 2105 "ml/lexer.ml"
-
-  | 14 ->
-# 786 "ml/lexer.mll"
-      ( raise (Error(Invalid_literal (Lexing.lexeme lexbuf),
-                     Location.curr lexbuf)) )
-# 2111 "ml/lexer.ml"
-
-  | 15 ->
-# 789 "ml/lexer.mll"
-      ( reset_string_buffer();
-        is_in_string := true;
-        let string_start = lexbuf.lex_start_p in
-        string_start_loc := Location.curr lexbuf;
-        string lexbuf;
-        is_in_string := false;
-        lexbuf.lex_start_p <- string_start;
-        STRING (get_stored_string(), None) )
-# 2123 "ml/lexer.ml"
-
-  | 16 ->
-# 798 "ml/lexer.mll"
-      ( reset_string_buffer();
-        let delim = Lexing.lexeme lexbuf in
-        let delim = String.sub delim 1 (String.length delim - 2) in
-        is_in_string := true;
-        let string_start = lexbuf.lex_start_p in
-        string_start_loc := Location.curr lexbuf;
-        quoted_string delim lexbuf;
-        is_in_string := false;
-        lexbuf.lex_start_p <- string_start;
-        STRING (get_stored_string(), Some delim) )
-# 2137 "ml/lexer.ml"
-
-  | 17 ->
-# 809 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false 1;
-        CHAR (Lexing.lexeme_char lexbuf 1) )
-# 2143 "ml/lexer.ml"
-
-  | 18 ->
-# 812 "ml/lexer.mll"
-      ( CHAR(Lexing.lexeme_char lexbuf 1) )
-# 2148 "ml/lexer.ml"
-
-  | 19 ->
-# 814 "ml/lexer.mll"
-      ( CHAR(char_for_backslash (Lexing.lexeme_char lexbuf 2)) )
-# 2153 "ml/lexer.ml"
-
-  | 20 ->
-# 816 "ml/lexer.mll"
-      ( CHAR(char_for_decimal_code lexbuf 2) )
-# 2158 "ml/lexer.ml"
-
-  | 21 ->
-# 818 "ml/lexer.mll"
-      ( CHAR(char_for_octal_code lexbuf 3) )
-# 2163 "ml/lexer.ml"
-
-  | 22 ->
-# 820 "ml/lexer.mll"
-      ( CHAR(char_for_hexadecimal_code lexbuf 3) )
-# 2168 "ml/lexer.ml"
-
-  | 23 ->
-# 822 "ml/lexer.mll"
-      ( let l = Lexing.lexeme lexbuf in
-        let esc = String.sub l 1 (String.length l - 1) in
-        raise (Error(Illegal_escape esc, Location.curr lexbuf))
-      )
-# 2176 "ml/lexer.ml"
-
-  | 24 ->
-# 827 "ml/lexer.mll"
-      ( let s, loc = with_comment_buffer comment lexbuf in
-        COMMENT (s, loc) )
-# 2182 "ml/lexer.ml"
-
-  | 25 ->
-# 830 "ml/lexer.mll"
-      ( let s, loc = with_comment_buffer comment lexbuf in
-        if !handle_docstrings then
-          DOCSTRING (Docstrings.docstring s loc)
-        else
-          COMMENT ("*" ^ s, loc)
-      )
-# 2192 "ml/lexer.ml"
-
-  | 26 ->
-let
-# 836 "ml/lexer.mll"
-                     stars
-# 2198 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf (lexbuf.Lexing.lex_start_pos + 3) lexbuf.Lexing.lex_curr_pos in
-# 837 "ml/lexer.mll"
-      ( let s, loc =
-          with_comment_buffer
-            (fun lexbuf ->
-               store_string ("*" ^ stars);
-               comment lexbuf)
-            lexbuf
-        in
-        COMMENT (s, loc) )
-# 2209 "ml/lexer.ml"
-
-  | 27 ->
-# 846 "ml/lexer.mll"
-      ( if !print_warnings then
-          Location.prerr_warning (Location.curr lexbuf) Warnings.Comment_start;
-        let s, loc = with_comment_buffer comment lexbuf in
-        COMMENT (s, loc) )
-# 2217 "ml/lexer.ml"
-
-  | 28 ->
-let
-# 850 "ml/lexer.mll"
-                    stars
-# 2223 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf (lexbuf.Lexing.lex_start_pos + 2) (lexbuf.Lexing.lex_curr_pos + -2) in
-# 851 "ml/lexer.mll"
-      ( if !handle_docstrings && stars="" then
-         (* (**) is an empty docstring *)
-          DOCSTRING(Docstrings.docstring "" (Location.curr lexbuf))
-        else
-          COMMENT (stars, Location.curr lexbuf) )
-# 2231 "ml/lexer.ml"
-
-  | 29 ->
-# 857 "ml/lexer.mll"
-      ( let loc = Location.curr lexbuf in
-        Location.prerr_warning loc Warnings.Comment_not_end;
-        lexbuf.Lexing.lex_curr_pos <- lexbuf.Lexing.lex_curr_pos - 1;
-        let curpos = lexbuf.lex_curr_p in
-        lexbuf.lex_curr_p <- { curpos with pos_cnum = curpos.pos_cnum - 1 };
-        STAR
-      )
-# 2242 "ml/lexer.ml"
-
-  | 30 ->
-let
-# 864 "ml/lexer.mll"
-                                    num
-# 2248 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf lexbuf.Lexing.lex_mem.(0) lexbuf.Lexing.lex_mem.(1)
-and
-# 865 "ml/lexer.mll"
-                                            name
-# 2253 "ml/lexer.ml"
-= Lexing.sub_lexeme_opt lexbuf lexbuf.Lexing.lex_mem.(4) lexbuf.Lexing.lex_mem.(3)
-and
-# 865 "ml/lexer.mll"
-                                                             directive
-# 2258 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf lexbuf.Lexing.lex_start_pos lexbuf.Lexing.lex_mem.(2) in
-# 867 "ml/lexer.mll"
-      (
-        match int_of_string num with
-        | exception _ ->
-            (* PR#7165 *)
-            let loc = Location.curr lexbuf in
-            let explanation = "line number out of range" in
-            let error = Invalid_directive (directive, Some explanation) in
-            raise (Error (error, loc))
-        | line_num ->
-           (* Documentation says that the line number should be
-              positive, but we have never guarded against this and it
-              might have useful hackish uses. *)
-            update_loc lexbuf name line_num true 0;
-            token lexbuf
-      )
-# 2276 "ml/lexer.ml"
-
-  | 31 ->
-# 882 "ml/lexer.mll"
-         ( HASH )
-# 2281 "ml/lexer.ml"
-
-  | 32 ->
-# 883 "ml/lexer.mll"
-         ( AMPERSAND )
-# 2286 "ml/lexer.ml"
-
-  | 33 ->
-# 884 "ml/lexer.mll"
-         ( AMPERAMPER )
-# 2291 "ml/lexer.ml"
-
-  | 34 ->
-# 885 "ml/lexer.mll"
-         ( BACKQUOTE )
-# 2296 "ml/lexer.ml"
-
-  | 35 ->
-# 886 "ml/lexer.mll"
-         ( QUOTE )
-# 2301 "ml/lexer.ml"
-
-  | 36 ->
-# 887 "ml/lexer.mll"
-         ( LPAREN )
-# 2306 "ml/lexer.ml"
-
-  | 37 ->
-# 888 "ml/lexer.mll"
-         ( RPAREN )
-# 2311 "ml/lexer.ml"
-
-  | 38 ->
-# 889 "ml/lexer.mll"
-         ( STAR )
-# 2316 "ml/lexer.ml"
-
-  | 39 ->
-# 890 "ml/lexer.mll"
-         ( COMMA )
-# 2321 "ml/lexer.ml"
-
-  | 40 ->
-# 891 "ml/lexer.mll"
-         ( MINUSGREATER )
-# 2326 "ml/lexer.ml"
-
-  | 41 ->
-# 892 "ml/lexer.mll"
-         ( DOT )
-# 2331 "ml/lexer.ml"
-
-  | 42 ->
-# 893 "ml/lexer.mll"
-         ( DOTDOT )
-# 2336 "ml/lexer.ml"
-
-  | 43 ->
-let
-# 894 "ml/lexer.mll"
-                                      s
-# 2342 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf (lexbuf.Lexing.lex_start_pos + 1) lexbuf.Lexing.lex_curr_pos in
-# 894 "ml/lexer.mll"
-                                         ( DOTOP s )
-# 2346 "ml/lexer.ml"
-
-  | 44 ->
-# 895 "ml/lexer.mll"
-         ( COLON )
-# 2351 "ml/lexer.ml"
-
-  | 45 ->
-# 896 "ml/lexer.mll"
-         ( COLONCOLON )
-# 2356 "ml/lexer.ml"
-
-  | 46 ->
-# 897 "ml/lexer.mll"
-         ( COLONEQUAL )
-# 2361 "ml/lexer.ml"
-
-  | 47 ->
-# 898 "ml/lexer.mll"
-         ( COLONGREATER )
-# 2366 "ml/lexer.ml"
-
-  | 48 ->
-# 899 "ml/lexer.mll"
-         ( SEMI )
-# 2371 "ml/lexer.ml"
-
-  | 49 ->
-# 900 "ml/lexer.mll"
-         ( SEMISEMI )
-# 2376 "ml/lexer.ml"
-
-  | 50 ->
-# 901 "ml/lexer.mll"
-         ( LESS )
-# 2381 "ml/lexer.ml"
-
-  | 51 ->
-# 902 "ml/lexer.mll"
-         ( LESSMINUS )
-# 2386 "ml/lexer.ml"
-
-  | 52 ->
-# 903 "ml/lexer.mll"
-         ( EQUAL )
-# 2391 "ml/lexer.ml"
-
-  | 53 ->
-# 904 "ml/lexer.mll"
-         ( LBRACKET )
-# 2396 "ml/lexer.ml"
-
-  | 54 ->
-# 905 "ml/lexer.mll"
-         ( LBRACKETBAR )
-# 2401 "ml/lexer.ml"
-
-  | 55 ->
-# 906 "ml/lexer.mll"
-         ( LBRACKETLESS )
-# 2406 "ml/lexer.ml"
-
-  | 56 ->
-# 907 "ml/lexer.mll"
-         ( LBRACKETGREATER )
-# 2411 "ml/lexer.ml"
-
-  | 57 ->
-# 908 "ml/lexer.mll"
-         ( RBRACKET )
-# 2416 "ml/lexer.ml"
-
-  | 58 ->
-# 909 "ml/lexer.mll"
-         ( LBRACE )
-# 2421 "ml/lexer.ml"
-
-  | 59 ->
-# 910 "ml/lexer.mll"
-         ( LBRACELESS )
-# 2426 "ml/lexer.ml"
-
-  | 60 ->
-# 911 "ml/lexer.mll"
-         ( BAR )
-# 2431 "ml/lexer.ml"
-
-  | 61 ->
-# 912 "ml/lexer.mll"
-         ( BARBAR )
-# 2436 "ml/lexer.ml"
-
-  | 62 ->
-# 913 "ml/lexer.mll"
-         ( BARRBRACKET )
-# 2441 "ml/lexer.ml"
-
-  | 63 ->
-# 914 "ml/lexer.mll"
-         ( GREATER )
-# 2446 "ml/lexer.ml"
-
-  | 64 ->
-# 915 "ml/lexer.mll"
-         ( GREATERRBRACKET )
-# 2451 "ml/lexer.ml"
-
-  | 65 ->
-# 916 "ml/lexer.mll"
-         ( RBRACE )
-# 2456 "ml/lexer.ml"
-
-  | 66 ->
-# 917 "ml/lexer.mll"
-         ( GREATERRBRACE )
-# 2461 "ml/lexer.ml"
-
-  | 67 ->
-# 918 "ml/lexer.mll"
-         ( LBRACKETAT )
-# 2466 "ml/lexer.ml"
-
-  | 68 ->
-# 919 "ml/lexer.mll"
-           ( LBRACKETATAT )
-# 2471 "ml/lexer.ml"
-
-  | 69 ->
-# 920 "ml/lexer.mll"
-           ( LBRACKETATATAT )
-# 2476 "ml/lexer.ml"
-
-  | 70 ->
-# 921 "ml/lexer.mll"
-           ( LBRACKETPERCENT )
-# 2481 "ml/lexer.ml"
-
-  | 71 ->
-# 922 "ml/lexer.mll"
-           ( LBRACKETPERCENTPERCENT )
-# 2486 "ml/lexer.ml"
-
-  | 72 ->
-# 923 "ml/lexer.mll"
-         ( BANG )
-# 2491 "ml/lexer.ml"
-
-  | 73 ->
-# 924 "ml/lexer.mll"
-         ( INFIXOP0 "!=" )
-# 2496 "ml/lexer.ml"
-
-  | 74 ->
-# 925 "ml/lexer.mll"
-         ( PLUS )
-# 2501 "ml/lexer.ml"
-
-  | 75 ->
-# 926 "ml/lexer.mll"
-         ( PLUSDOT )
-# 2506 "ml/lexer.ml"
-
-  | 76 ->
-# 927 "ml/lexer.mll"
-         ( PLUSEQ )
-# 2511 "ml/lexer.ml"
-
-  | 77 ->
-# 928 "ml/lexer.mll"
-         ( MINUS )
-# 2516 "ml/lexer.ml"
-
-  | 78 ->
-# 929 "ml/lexer.mll"
-         ( MINUSDOT )
-# 2521 "ml/lexer.ml"
-
-  | 79 ->
-# 932 "ml/lexer.mll"
-            ( PREFIXOP(Lexing.lexeme lexbuf) )
-# 2526 "ml/lexer.ml"
-
-  | 80 ->
-# 934 "ml/lexer.mll"
-            ( PREFIXOP(Lexing.lexeme lexbuf) )
-# 2531 "ml/lexer.ml"
-
-  | 81 ->
-# 936 "ml/lexer.mll"
-            ( INFIXOP0(Lexing.lexeme lexbuf) )
-# 2536 "ml/lexer.ml"
-
-  | 82 ->
-# 938 "ml/lexer.mll"
-            ( INFIXOP1(Lexing.lexeme lexbuf) )
-# 2541 "ml/lexer.ml"
-
-  | 83 ->
-# 940 "ml/lexer.mll"
-            ( INFIXOP2(Lexing.lexeme lexbuf) )
-# 2546 "ml/lexer.ml"
-
-  | 84 ->
-# 942 "ml/lexer.mll"
-            ( INFIXOP4(Lexing.lexeme lexbuf) )
-# 2551 "ml/lexer.ml"
-
-  | 85 ->
-# 943 "ml/lexer.mll"
-            ( PERCENT )
-# 2556 "ml/lexer.ml"
-
-  | 86 ->
-# 945 "ml/lexer.mll"
-            ( INFIXOP3(Lexing.lexeme lexbuf) )
-# 2561 "ml/lexer.ml"
-
-  | 87 ->
-# 947 "ml/lexer.mll"
-            ( HASHOP(Lexing.lexeme lexbuf) )
-# 2566 "ml/lexer.ml"
-
-  | 88 ->
-# 948 "ml/lexer.mll"
-        (
-    if !if_then_else <> Dir_out then
-      if !if_then_else = Dir_if_true then
-        raise (Error (Unterminated_if, Location.curr lexbuf))
-      else raise (Error(Unterminated_else, Location.curr lexbuf))
-    else 
-      EOF
-
-  )
-# 2579 "ml/lexer.ml"
-
-  | 89 ->
-# 958 "ml/lexer.mll"
-      ( raise (Error(Illegal_character (Lexing.lexeme_char lexbuf 0),
-                     Location.curr lexbuf))
-      )
-# 2586 "ml/lexer.ml"
-
-  | __ocaml_lex_state -> lexbuf.Lexing.refill_buff lexbuf;
-      __ocaml_lex_token_rec lexbuf __ocaml_lex_state
-
-and comment lexbuf =
-   __ocaml_lex_comment_rec lexbuf 137
-and __ocaml_lex_comment_rec lexbuf __ocaml_lex_state =
-  match Lexing.engine __ocaml_lex_tables __ocaml_lex_state lexbuf with
-      | 0 ->
-# 964 "ml/lexer.mll"
-      ( comment_start_loc := (Location.curr lexbuf) :: !comment_start_loc;
-        store_lexeme lexbuf;
-        comment lexbuf
-      )
-# 2601 "ml/lexer.ml"
-
-  | 1 ->
-# 969 "ml/lexer.mll"
-      ( match !comment_start_loc with
-        | [] -> assert false
-        | [_] -> comment_start_loc := []; Location.curr lexbuf
-        | _ :: l -> comment_start_loc := l;
-                  store_lexeme lexbuf;
-                  comment lexbuf
-       )
-# 2612 "ml/lexer.ml"
-
-  | 2 ->
-# 977 "ml/lexer.mll"
-      (
-        string_start_loc := Location.curr lexbuf;
-        store_string_char '\"';
-        is_in_string := true;
-        begin try string lexbuf
-        with Error (Unterminated_string, str_start) ->
-          match !comment_start_loc with
-          | [] -> assert false
-          | loc :: _ ->
-            let start = List.hd (List.rev !comment_start_loc) in
-            comment_start_loc := [];
-            raise (Error (Unterminated_string_in_comment (start, str_start),
-                          loc))
-        end;
-        is_in_string := false;
-        store_string_char '\"';
-        comment lexbuf )
-# 2633 "ml/lexer.ml"
-
-  | 3 ->
-# 995 "ml/lexer.mll"
-      (
-        let delim = Lexing.lexeme lexbuf in
-        let delim = String.sub delim 1 (String.length delim - 2) in
-        string_start_loc := Location.curr lexbuf;
-        store_lexeme lexbuf;
-        is_in_string := true;
-        begin try quoted_string delim lexbuf
-        with Error (Unterminated_string, str_start) ->
-          match !comment_start_loc with
-          | [] -> assert false
-          | loc :: _ ->
-            let start = List.hd (List.rev !comment_start_loc) in
-            comment_start_loc := [];
-            raise (Error (Unterminated_string_in_comment (start, str_start),
-                          loc))
-        end;
-        is_in_string := false;
-        store_string_char '|';
-        store_string delim;
-        store_string_char '}';
-        comment lexbuf )
-# 2658 "ml/lexer.ml"
-
-  | 4 ->
-# 1018 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2663 "ml/lexer.ml"
-
-  | 5 ->
-# 1020 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false 1;
-        store_lexeme lexbuf;
-        comment lexbuf
-      )
-# 2671 "ml/lexer.ml"
-
-  | 6 ->
-# 1025 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2676 "ml/lexer.ml"
-
-  | 7 ->
-# 1027 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2681 "ml/lexer.ml"
-
-  | 8 ->
-# 1029 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2686 "ml/lexer.ml"
-
-  | 9 ->
-# 1031 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2691 "ml/lexer.ml"
-
-  | 10 ->
-# 1033 "ml/lexer.mll"
-      ( match !comment_start_loc with
-        | [] -> assert false
-        | loc :: _ ->
-          let start = List.hd (List.rev !comment_start_loc) in
-          comment_start_loc := [];
-          raise (Error (Unterminated_comment start, loc))
-      )
-# 2702 "ml/lexer.ml"
-
-  | 11 ->
-# 1041 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false 0;
-        store_lexeme lexbuf;
-        comment lexbuf
-      )
-# 2710 "ml/lexer.ml"
-
-  | 12 ->
-# 1046 "ml/lexer.mll"
-      ( store_lexeme lexbuf; comment lexbuf )
-# 2715 "ml/lexer.ml"
-
-  | __ocaml_lex_state -> lexbuf.Lexing.refill_buff lexbuf;
-      __ocaml_lex_comment_rec lexbuf __ocaml_lex_state
-
-and string lexbuf =
-  lexbuf.Lexing.lex_mem <- Array.make 2 (-1); __ocaml_lex_string_rec lexbuf 169
-and __ocaml_lex_string_rec lexbuf __ocaml_lex_state =
-  match Lexing.new_engine __ocaml_lex_tables __ocaml_lex_state lexbuf with
-      | 0 ->
-# 1050 "ml/lexer.mll"
-      ( () )
-# 2727 "ml/lexer.ml"
-
-  | 1 ->
-let
-# 1051 "ml/lexer.mll"
-                                  space
-# 2733 "ml/lexer.ml"
-= Lexing.sub_lexeme lexbuf lexbuf.Lexing.lex_mem.(0) lexbuf.Lexing.lex_curr_pos in
-# 1052 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false (String.length space);
-        if in_comment () then store_lexeme lexbuf;
-        string lexbuf
-      )
-# 2740 "ml/lexer.ml"
-
-  | 2 ->
-# 1057 "ml/lexer.mll"
-      ( store_escaped_char lexbuf
-                           (char_for_backslash(Lexing.lexeme_char lexbuf 1));
-        string lexbuf )
-# 2747 "ml/lexer.ml"
-
-  | 3 ->
-# 1061 "ml/lexer.mll"
-      ( store_escaped_char lexbuf (char_for_decimal_code lexbuf 1);
-         string lexbuf )
-# 2753 "ml/lexer.ml"
-
-  | 4 ->
-# 1064 "ml/lexer.mll"
-      ( store_escaped_char lexbuf (char_for_octal_code lexbuf 2);
-         string lexbuf )
-# 2759 "ml/lexer.ml"
-
-  | 5 ->
-# 1067 "ml/lexer.mll"
-      ( store_escaped_char lexbuf (char_for_hexadecimal_code lexbuf 2);
-         string lexbuf )
-# 2765 "ml/lexer.ml"
-
-  | 6 ->
-# 1070 "ml/lexer.mll"
-        ( store_escaped_uchar lexbuf (uchar_for_uchar_escape lexbuf);
-          string lexbuf )
-# 2771 "ml/lexer.ml"
-
-  | 7 ->
-# 1073 "ml/lexer.mll"
-      ( if not (in_comment ()) then begin
-(*  Should be an error, but we are very lax.
-          raise (Error (Illegal_escape (Lexing.lexeme lexbuf),
-                        Location.curr lexbuf))
-*)
-          let loc = Location.curr lexbuf in
-          Location.prerr_warning loc Warnings.Illegal_backslash;
-        end;
-        store_lexeme lexbuf;
-        string lexbuf
-      )
-# 2786 "ml/lexer.ml"
-
-  | 8 ->
-# 1085 "ml/lexer.mll"
-      ( if not (in_comment ()) then
-          Location.prerr_warning (Location.curr lexbuf) Warnings.Eol_in_string;
-        update_loc lexbuf None 1 false 0;
-        store_lexeme lexbuf;
-        string lexbuf
-      )
-# 2796 "ml/lexer.ml"
-
-  | 9 ->
-# 1092 "ml/lexer.mll"
-      ( is_in_string := false;
-        raise (Error (Unterminated_string, !string_start_loc)) )
-# 2802 "ml/lexer.ml"
-
-  | 10 ->
-# 1095 "ml/lexer.mll"
-      ( store_string_char(Lexing.lexeme_char lexbuf 0);
-        string lexbuf )
-# 2808 "ml/lexer.ml"
-
-  | __ocaml_lex_state -> lexbuf.Lexing.refill_buff lexbuf;
-      __ocaml_lex_string_rec lexbuf __ocaml_lex_state
-
-and quoted_string delim lexbuf =
-   __ocaml_lex_quoted_string_rec delim lexbuf 196
-and __ocaml_lex_quoted_string_rec delim lexbuf __ocaml_lex_state =
-  match Lexing.engine __ocaml_lex_tables __ocaml_lex_state lexbuf with
-      | 0 ->
-# 1100 "ml/lexer.mll"
-      ( update_loc lexbuf None 1 false 0;
-        store_lexeme lexbuf;
-        quoted_string delim lexbuf
-      )
-# 2823 "ml/lexer.ml"
-
-  | 1 ->
-# 1105 "ml/lexer.mll"
-      ( is_in_string := false;
-        raise (Error (Unterminated_string, !string_start_loc)) )
-# 2829 "ml/lexer.ml"
-
-  | 2 ->
-# 1108 "ml/lexer.mll"
-      (
-        let edelim = Lexing.lexeme lexbuf in
-        let edelim = String.sub edelim 1 (String.length edelim - 2) in
-        if delim = edelim then ()
-        else (store_lexeme lexbuf; quoted_string delim lexbuf)
-      )
-# 2839 "ml/lexer.ml"
-
-  | 3 ->
-# 1115 "ml/lexer.mll"
-      ( store_string_char(Lexing.lexeme_char lexbuf 0);
-        quoted_string delim lexbuf )
-# 2845 "ml/lexer.ml"
-
-  | __ocaml_lex_state -> lexbuf.Lexing.refill_buff lexbuf;
-      __ocaml_lex_quoted_string_rec delim lexbuf __ocaml_lex_state
-
-and skip_hash_bang lexbuf =
-   __ocaml_lex_skip_hash_bang_rec lexbuf 205
-and __ocaml_lex_skip_hash_bang_rec lexbuf __ocaml_lex_state =
-  match Lexing.engine __ocaml_lex_tables __ocaml_lex_state lexbuf with
-      | 0 ->
-# 1120 "ml/lexer.mll"
-       ( update_loc lexbuf None 3 false 0 )
-# 2857 "ml/lexer.ml"
-
-  | 1 ->
-# 1122 "ml/lexer.mll"
-       ( update_loc lexbuf None 1 false 0 )
-# 2862 "ml/lexer.ml"
-
-  | 2 ->
-# 1123 "ml/lexer.mll"
-       ( () )
-# 2867 "ml/lexer.ml"
-
-  | __ocaml_lex_state -> lexbuf.Lexing.refill_buff lexbuf;
-      __ocaml_lex_skip_hash_bang_rec lexbuf __ocaml_lex_state
-
-;;
-
-# 1125 "ml/lexer.mll"
- 
-  let at_bol lexbuf = 
-    let pos = Lexing.lexeme_start_p lexbuf in 
-    pos.pos_cnum = pos.pos_bol 
-
-  let token_with_comments lexbuf =
-    match !preprocessor with
-    | None -> token lexbuf
-    | Some (_init, preprocess) -> preprocess token lexbuf
-
-  type newline_state =
-    | NoLine (* There have been no blank lines yet. *)
-    | NewLine
-        (* There have been no blank lines, and the previous
-           token was a newline. *)
-    | BlankLine (* There have been blank lines. *)
-
-  type doc_state =
-    | Initial  (* There have been no docstrings yet *)
-    | After of docstring list
-        (* There have been docstrings, none of which were
-           preceded by a blank line *)
-    | Before of docstring list * docstring list * docstring list
-        (* There have been docstrings, some of which were
-           preceded by a blank line *)
-
-  and docstring = Docstrings.docstring
-
-  let interpret_directive lexbuf cont look_ahead = 
-    let if_then_else = !if_then_else in
-    begin match token_with_comments lexbuf, if_then_else with 
-    |  IF, Dir_out  ->
-        let rec skip_from_if_false () = 
-          let token = token_with_comments lexbuf in
-          if token = EOF then 
-            raise (Error (Unterminated_if, Location.curr lexbuf)) else
-          if token = HASH && at_bol lexbuf then 
-            begin 
-              let token = token_with_comments lexbuf in
-              match token with
-              | END -> 
-                  begin
-                    update_if_then_else Dir_out;
-                    cont lexbuf
-                  end
-              | ELSE -> 
-                  begin
-                    update_if_then_else Dir_if_false;
-                    cont lexbuf
-                  end
-              | IF ->
-                  raise (Error (Unexpected_directive, Location.curr lexbuf))
-              | _ -> 
-                  if is_elif token &&
-                     directive_parse token_with_comments lexbuf then
-                    begin
-                      update_if_then_else Dir_if_true;
-                      cont lexbuf
-                    end
-                  else skip_from_if_false ()                               
-            end
-          else skip_from_if_false () in 
-        if directive_parse token_with_comments lexbuf then
-          begin 
-            update_if_then_else Dir_if_true (* Next state: ELSE *);
-            cont lexbuf
-          end
-        else
-          skip_from_if_false ()
-    | IF,  (Dir_if_false | Dir_if_true)->
-        raise (Error(Unexpected_directive, Location.curr lexbuf))
-    | LIDENT "elif", (Dir_if_false | Dir_out)
-      -> (* when the predicate is false, it will continue eating `elif` *)
-        raise (Error(Unexpected_directive, Location.curr lexbuf))
-    | (LIDENT "elif" | ELSE as token), Dir_if_true ->           
-        (* looking for #end, however, it can not see #if anymore *)
-        let rec skip_from_if_true else_seen = 
-          let token = token_with_comments lexbuf in
-          if token = EOF then 
-            raise (Error (Unterminated_else, Location.curr lexbuf)) else
-          if token = HASH && at_bol lexbuf then 
-            begin 
-              let token = token_with_comments lexbuf in 
-              match token with  
-              | END -> 
-                  begin
-                    update_if_then_else Dir_out;
-                    cont lexbuf
-                  end  
-              | IF ->  
-                  raise (Error (Unexpected_directive, Location.curr lexbuf)) 
-              | ELSE ->
-                  if else_seen then 
-                    raise (Error (Unexpected_directive, Location.curr lexbuf))
-                  else 
-                    skip_from_if_true true
-              | _ ->
-                  if else_seen && is_elif token then  
-                    raise (Error (Unexpected_directive, Location.curr lexbuf))
-                  else 
-                    skip_from_if_true else_seen
-            end
-          else skip_from_if_true else_seen in 
-        skip_from_if_true (token = ELSE)
-    | ELSE, Dir_if_false 
-    | ELSE, Dir_out -> 
-        raise (Error(Unexpected_directive, Location.curr lexbuf))
-    | END, (Dir_if_false | Dir_if_true ) -> 
-        update_if_then_else  Dir_out;
-        cont lexbuf
-    | END,  Dir_out  -> 
-        raise (Error(Unexpected_directive, Location.curr lexbuf))
-    | token, (Dir_if_true | Dir_if_false | Dir_out) ->
-        look_ahead token 
-    end
-
-  let token lexbuf =
-    let post_pos = lexeme_end_p lexbuf in
-    let attach lines docs pre_pos =
-      let open Docstrings in
-        match docs, lines with
-        | Initial, _ -> ()
-        | After a, (NoLine | NewLine) ->
-            set_post_docstrings post_pos (List.rev a);
-            set_pre_docstrings pre_pos a;
-        | After a, BlankLine ->
-            set_post_docstrings post_pos (List.rev a);
-            set_pre_extra_docstrings pre_pos (List.rev a)
-        | Before(a, f, b), (NoLine | NewLine) ->
-            set_post_docstrings post_pos (List.rev a);
-            set_post_extra_docstrings post_pos
-              (List.rev_append f (List.rev b));
-            set_floating_docstrings pre_pos (List.rev f);
-            set_pre_extra_docstrings pre_pos (List.rev a);
-            set_pre_docstrings pre_pos b
-        | Before(a, f, b), BlankLine ->
-            set_post_docstrings post_pos (List.rev a);
-            set_post_extra_docstrings post_pos
-              (List.rev_append f (List.rev b));
-            set_floating_docstrings pre_pos
-              (List.rev_append f (List.rev b));
-            set_pre_extra_docstrings pre_pos (List.rev a)
-    in
-    let rec loop lines docs lexbuf =
-      match token_with_comments lexbuf with
-      | COMMENT (s, loc) ->
-          add_comment (s, loc);
-          let lines' =
-            match lines with
-            | NoLine -> NoLine
-            | NewLine -> NoLine
-            | BlankLine -> BlankLine
-          in
-          loop lines' docs lexbuf
-      | EOL ->
-          let lines' =
-            match lines with
-            | NoLine -> NewLine
-            | NewLine -> BlankLine
-            | BlankLine -> BlankLine
-          in
-          loop lines' docs lexbuf
-      | HASH when at_bol lexbuf -> 
-          interpret_directive lexbuf 
-            (fun lexbuf -> loop lines docs lexbuf)
-            (fun token -> sharp_look_ahead := Some token; HASH)            
-      | DOCSTRING doc ->
-          Docstrings.register doc;
-          add_docstring_comment doc;
-          let docs' =
-            if Docstrings.docstring_body doc = "/*" then
-              match docs with
-              | Initial -> Before([], [doc], [])
-              | After a -> Before (a, [doc], [])
-              | Before(a, f, b) -> Before(a, doc :: b @ f, [])
-            else
-              match docs, lines with
-              | Initial, (NoLine | NewLine) -> After [doc]
-              | Initial, BlankLine -> Before([], [], [doc])
-              | After a, (NoLine | NewLine) -> After (doc :: a)
-              | After a, BlankLine -> Before (a, [], [doc])
-              | Before(a, f, b), (NoLine | NewLine) -> Before(a, f, doc :: b)
-              | Before(a, f, b), BlankLine -> Before(a, b @ f, [doc])
-          in
-          loop NoLine docs' lexbuf
-      | tok ->
-          attach lines docs (lexeme_start_p lexbuf);
-          tok
-    in
-      match !sharp_look_ahead with
-      | None -> 
-          loop NoLine Initial lexbuf
-      | Some token ->
-          sharp_look_ahead := None ;
-          token
-
-  let init () =
-    sharp_look_ahead := None;
-    update_if_then_else  Dir_out;
-    is_in_string := false;
-    comment_start_loc := [];
-    comment_list := [];
-    match !preprocessor with
-    | None -> ()
-    | Some (init, _preprocess) -> init ()
-
-  let rec filter_directive pos   acc lexbuf : (int * int ) list =
-    match token_with_comments lexbuf with
-    | HASH when at_bol lexbuf ->
-        (* ^[start_pos]#if ... #then^[end_pos] *)
-        let start_pos = Lexing.lexeme_start lexbuf in 
-        interpret_directive lexbuf 
-          (fun lexbuf -> 
-             filter_directive 
-               (Lexing.lexeme_end lexbuf)
-               ((pos, start_pos) :: acc)
-               lexbuf
-          
-          )
-          (fun _token -> filter_directive pos acc lexbuf  )
-    | EOF -> (pos, Lexing.lexeme_end lexbuf) :: acc
-    | _ -> filter_directive pos  acc lexbuf
-
-  let filter_directive_from_lexbuf lexbuf = 
-    List.rev (filter_directive 0 [] lexbuf )
-
-  let set_preprocessor init preprocess =
-    escaped_newlines := true;
-    preprocessor := Some (init, preprocess)
-
-
-# 3106 "ml/lexer.ml"
diff --git a/src/compiler-libs-406/lexer.mli b/src/compiler-libs-406/lexer.mli
deleted file mode 100644
index 16da2029..00000000
--- a/src/compiler-libs-406/lexer.mli
+++ /dev/null
@@ -1,84 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* The lexical analyzer *)
-
-val init : unit -> unit
-val token: Lexing.lexbuf -> Parser.token
-val skip_hash_bang: Lexing.lexbuf -> unit
-
-type directive_type 
-
-type error =
-  | Illegal_character of char
-  | Illegal_escape of string
-  | Unterminated_comment of Location.t
-  | Unterminated_string
-  | Unterminated_string_in_comment of Location.t * Location.t
-  | Keyword_as_label of string
-  | Invalid_literal of string
-  | Invalid_directive of string * string option
-  | Unterminated_paren_in_conditional
-  | Unterminated_if
-  | Unterminated_else 
-  | Unexpected_token_in_conditional 
-  | Expect_hash_then_in_conditional
-  | Illegal_semver of string
-  | Unexpected_directive
-  | Conditional_expr_expected_type of directive_type * directive_type                           
-;;
-
-exception Error of error * Location.t
-
-
-
-val in_comment : unit -> bool;;
-val in_string : unit -> bool;;
-
-
-val print_warnings : bool ref
-val handle_docstrings: bool ref
-val comments : unit -> (string * Location.t) list
-val token_with_comments : Lexing.lexbuf -> Parser.token
-
-(*
-  [set_preprocessor init preprocessor] registers [init] as the function
-to call to initialize the preprocessor when the lexer is initialized,
-and [preprocessor] a function that is called when a new token is needed
-by the parser, as [preprocessor lexer lexbuf] where [lexer] is the
-lexing function.
-
-When a preprocessor is configured by calling [set_preprocessor], the lexer
-changes its behavior to accept backslash-newline as a token-separating blank.
-*)
-
-val set_preprocessor :
-  (unit -> unit) ->
-  ((Lexing.lexbuf -> Parser.token) -> Lexing.lexbuf -> Parser.token) ->
-  unit
-
-(** semantic version predicate *)
-val semver : Location.t ->   string -> string -> bool
-
-val filter_directive_from_lexbuf : Lexing.lexbuf -> (int * int) list
-
-val replace_directive_int : string -> int -> unit
-val replace_directive_string : string -> string -> unit
-val replace_directive_bool : string -> bool -> unit 
-val remove_directive_built_in_value : string -> unit
-
-(** @return false means failed to define *)
-val define_key_value : string -> string -> bool
-val list_variables : Format.formatter -> unit
diff --git a/src/compiler-libs-406/location.ml b/src/compiler-libs-406/location.ml
deleted file mode 100644
index 6d13cb82..00000000
--- a/src/compiler-libs-406/location.ml
+++ /dev/null
@@ -1,330 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Lexing
-
-let absname = ref false
-    (* This reference should be in Clflags, but it would create an additional
-       dependency and make bootstrapping Camlp4 more difficult. *)
-
-type t = Warnings.loc = { loc_start: position; loc_end: position; loc_ghost: bool };;
-
-let in_file name =
-  let loc = {
-    pos_fname = name;
-    pos_lnum = 1;
-    pos_bol = 0;
-    pos_cnum = -1;
-  } in
-  { loc_start = loc; loc_end = loc; loc_ghost = true }
-;;
-
-let none = in_file "_none_";;
-
-let curr lexbuf = {
-  loc_start = lexbuf.lex_start_p;
-  loc_end = lexbuf.lex_curr_p;
-  loc_ghost = false
-};;
-
-let init lexbuf fname =
-  lexbuf.lex_curr_p <- {
-    pos_fname = fname;
-    pos_lnum = 1;
-    pos_bol = 0;
-    pos_cnum = 0;
-  }
-;;
-
-let symbol_rloc () = {
-  loc_start = Parsing.symbol_start_pos ();
-  loc_end = Parsing.symbol_end_pos ();
-  loc_ghost = false;
-};;
-
-let symbol_gloc () = {
-  loc_start = Parsing.symbol_start_pos ();
-  loc_end = Parsing.symbol_end_pos ();
-  loc_ghost = true;
-};;
-
-let rhs_loc n = {
-  loc_start = Parsing.rhs_start_pos n;
-  loc_end = Parsing.rhs_end_pos n;
-  loc_ghost = false;
-};;
-
-let input_name = ref "_none_"
-let input_lexbuf = ref (None : lexbuf option)
-let set_input_name name =
-  if name <> "" then input_name := name
-(* Terminal info *)
-
-
-
-let num_loc_lines = ref 0 (* number of lines already printed after input *)
-
-(* Print the location in some way or another *)
-
-open Format
-
-let absolute_path s = (* This function could go into Filename *)
-  let open Filename in
-  let s = if is_relative s then concat (Sys.getcwd ()) s else s in
-  (* Now simplify . and .. components *)
-  let rec aux s =
-    let base = basename s in
-    let dir = dirname s in
-    if dir = s then dir
-    else if base = current_dir_name then aux dir
-    else if base = parent_dir_name then dirname (aux dir)
-    else concat (aux dir) base
-  in
-  aux s
-
-let show_filename file =
-  let file = if file = "_none_"  then !input_name else file in 
-  if !absname then absolute_path file else file
-
-let print_filename ppf file =
-  Format.fprintf ppf "%s" (show_filename file)
-
-let reset () =
-  num_loc_lines := 0
-
-let (msg_file, msg_line, msg_chars, msg_to, msg_colon) =
-  ("File \"", "\", line ", ", characters ", "-", ":")
-
-(* return file, line, char from the given position *)
-let get_pos_info pos =
-  (pos.pos_fname, pos.pos_lnum, pos.pos_cnum - pos.pos_bol)
-;;
-
-let setup_colors () =
-  Misc.Color.setup !Clflags.color
-
-let print_loc ppf loc =
-  setup_colors ();
-  let (file, line, startchar) = get_pos_info loc.loc_start in
-  let startchar =  startchar + 1 in 
-  let endchar = loc.loc_end.pos_cnum - loc.loc_start.pos_cnum + startchar in
-  if file = "//toplevel//" then begin
-      fprintf ppf "Characters %i-%i"
-              loc.loc_start.pos_cnum loc.loc_end.pos_cnum
-  end else begin
-    fprintf ppf "%s@{<loc>%a%s%i" msg_file print_filename file msg_line line;
-    if startchar >= 0 then
-      fprintf ppf "%s%i%s%i" msg_chars (startchar-1) msg_to (endchar-1);
-    fprintf ppf "@}"
-  end
-;;
-
-let default_printer ppf loc =
-  setup_colors ();
-  fprintf ppf "@{<loc>%a@}%s@," print_loc loc msg_colon
-;;
-
-let printer = ref default_printer
-let print ppf loc = !printer ppf loc
-
-let error_prefix = "Error"
-let warning_prefix = "Warning"
-
-let print_error_prefix ppf =
-  setup_colors ();
-  fprintf ppf "@{<error>%s@}" error_prefix;
-;;
-
-let print_compact ppf loc =
-  begin
-    let (file, line, startchar) = get_pos_info loc.loc_start in
-    let endchar = loc.loc_end.pos_cnum - loc.loc_start.pos_cnum + startchar in
-    fprintf ppf "%a:%i" print_filename file line;
-    if startchar >= 0 then fprintf ppf ",%i--%i" startchar endchar
-  end
-;;
-
-let print_error ppf loc =
-  fprintf ppf "%a%t:" print loc print_error_prefix;
-;;
-
-let print_error_cur_file ppf () = print_error ppf (in_file !input_name);;
-
-let default_warning_printer loc ppf w =
-  match Warnings.report w with
-  | `Inactive -> ()
-  | `Active { Warnings. number; message; is_error; sub_locs } ->
-    setup_colors ();
-    fprintf ppf "@[<v>";
-    print ppf loc;
-    if is_error
-    then
-      fprintf ppf "%t (%s %d): %s@," print_error_prefix
-           (String.uncapitalize_ascii warning_prefix) number message
-    else fprintf ppf "@{<warning>%s@} %d: %s@," warning_prefix number message;
-    List.iter
-      (fun (loc, msg) ->
-         if loc <> none then fprintf ppf "  %a  %s@," print loc msg
-      )
-      sub_locs;
-    fprintf ppf "@]"
-;;
-
-let warning_printer = ref default_warning_printer ;;
-
-let print_warning loc ppf w = 
-  !warning_printer loc ppf w  
-;;
-
-let formatter_for_warnings = ref err_formatter;;
-let prerr_warning loc w = 
-    print_warning loc !formatter_for_warnings w;;
-
-let echo_eof () =
-  print_newline ();
-  incr num_loc_lines
-
-type 'a loc = {
-  txt : 'a;
-  loc : t;
-}
-
-let mkloc txt loc = { txt ; loc }
-let mknoloc txt = mkloc txt none
-
-
-type error =
-  {
-    loc: t;
-    msg: string;
-    sub: error list;
-    if_highlight: string; (* alternative message if locations are highlighted *)
-  }
-
-let pp_ksprintf ?before k fmt =
-  let buf = Buffer.create 64 in
-  let ppf = Format.formatter_of_buffer buf in
-  Misc.Color.set_color_tag_handling ppf;
-  begin match before with
-    | None -> ()
-    | Some f -> f ppf
-  end;
-  kfprintf
-    (fun _ ->
-      pp_print_flush ppf ();
-      let msg = Buffer.contents buf in
-      k msg)
-    ppf fmt
-
-(* Shift the formatter's offset by the length of the error prefix, which
-   is always added by the compiler after the message has been formatted *)
-let print_phanton_error_prefix ppf =
-  Format.pp_print_as ppf (String.length error_prefix + 2 (* ": " *)) ""
-
-let errorf ?(loc = none) ?(sub = []) ?(if_highlight = "") fmt =
-  pp_ksprintf
-    ~before:print_phanton_error_prefix
-    (fun msg -> {loc; msg; sub; if_highlight})
-    fmt
-
-let error ?(loc = none) ?(sub = []) ?(if_highlight = "") msg =
-  {loc; msg; sub; if_highlight}
-
-let error_of_exn : (exn -> error option) list ref = ref []
-
-let register_error_of_exn f = error_of_exn := f :: !error_of_exn
-
-exception Already_displayed_error = Warnings.Errors
-
-let error_of_exn exn =
-  match exn with
-  | Already_displayed_error -> Some `Already_displayed
-  | _ ->
-     let rec loop = function
-       | [] -> None
-       | f :: rest ->
-          match f exn with
-          | Some error -> Some (`Ok error)
-          | None -> loop rest
-     in
-     loop !error_of_exn
-
-
-let rec default_error_reporter ppf ({loc; msg; sub}) =
-    fprintf ppf "@[<v>%a %s" print_error loc msg;
-    List.iter (Format.fprintf ppf "@,@[<2>%a@]" default_error_reporter) sub;
-    fprintf ppf "@]"
-    
-let error_reporter = ref default_error_reporter
-
-let report_error ppf err =
-   !error_reporter ppf err
-;;
-
-let error_of_printer loc print x =
-  errorf ~loc "%a@?" print x
-
-let error_of_printer_file print x =
-  error_of_printer (in_file !input_name) print x
-
-let () =
-  register_error_of_exn
-    (function
-      | Sys_error msg ->
-          Some (errorf ~loc:(in_file !input_name)
-                "I/O error: %s" msg)
-
-      | Misc.HookExnWrapper {error = e; hook_name;
-                             hook_info={Misc.sourcefile}} ->
-          let sub = match error_of_exn e with
-            | None | Some `Already_displayed -> error (Printexc.to_string e)
-            | Some (`Ok err) -> err
-          in
-          Some
-            (errorf ~loc:(in_file sourcefile)
-               "In hook %S:" hook_name
-               ~sub:[sub])
-      | _ -> None
-    )
-
-external reraise : exn -> 'a = "%reraise"
-
-let rec report_exception_rec n ppf exn =
-  try
-    match error_of_exn exn with
-    | None -> reraise exn
-    | Some `Already_displayed -> ()
-    | Some (`Ok err) -> fprintf ppf "@[%a@]@." report_error err
-  with exn when n > 0 -> report_exception_rec (n-1) ppf exn
-
-let report_exception ppf exn = report_exception_rec 5 ppf exn
-
-
-exception Error of error
-
-let () =
-  register_error_of_exn
-    (function
-      | Error e -> Some e
-      | _ -> None
-    )
-
-let raise_errorf ?(loc = none) ?(sub = []) ?(if_highlight = "") =
-  pp_ksprintf
-    ~before:print_phanton_error_prefix
-    (fun msg -> raise (Error ({loc; msg; sub; if_highlight})))
-
-let deprecated ?(def = none) ?(use = none) loc msg =
-  prerr_warning loc (Warnings.Deprecated (msg, def, use))
\ No newline at end of file
diff --git a/src/compiler-libs-406/location.mli b/src/compiler-libs-406/location.mli
deleted file mode 100644
index 7bea184d..00000000
--- a/src/compiler-libs-406/location.mli
+++ /dev/null
@@ -1,145 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Source code locations (ranges of positions), used in parsetree. *)
-
-open Format
-
-type t = Warnings.loc = {
-  loc_start: Lexing.position;
-  loc_end: Lexing.position;
-  loc_ghost: bool;
-}
-
-(** Note on the use of Lexing.position in this module.
-   If [pos_fname = ""], then use [!input_name] instead.
-   If [pos_lnum = -1], then [pos_bol = 0]. Use [pos_cnum] and
-     re-parse the file to get the line and character numbers.
-   Else all fields are correct.
-*)
-
-val none : t
-(** An arbitrary value of type [t]; describes an empty ghost range. *)
-
-val in_file : string -> t
-(** Return an empty ghost range located in a given file. *)
-
-val init : Lexing.lexbuf -> string -> unit
-(** Set the file name and line number of the [lexbuf] to be the start
-    of the named file. *)
-
-val curr : Lexing.lexbuf -> t
-(** Get the location of the current token from the [lexbuf]. *)
-
-val symbol_rloc: unit -> t
-val symbol_gloc: unit -> t
-
-(** [rhs_loc n] returns the location of the symbol at position [n], starting
-  at 1, in the current parser rule. *)
-val rhs_loc: int -> t
-
-val input_name: string ref
-val set_input_name: string -> unit 
-val input_lexbuf: Lexing.lexbuf option ref
-
-val get_pos_info: Lexing.position -> string * int * int (* file, line, char *)
-val print_loc: formatter -> t -> unit
-val print_error: formatter -> t -> unit
-val print_error_cur_file: formatter -> unit -> unit
-
-val prerr_warning: t -> Warnings.t -> unit
-val echo_eof: unit -> unit
-val reset: unit -> unit
-
-val default_printer : formatter -> t -> unit
-val printer : (formatter -> t -> unit) ref
-
-val warning_printer : (t -> formatter -> Warnings.t -> unit) ref
-(** Hook for intercepting warnings. *)
-
-val default_warning_printer : t -> formatter -> Warnings.t -> unit
-(** Original warning printer for use in hooks. *)
-
-type 'a loc = {
-  txt : 'a;
-  loc : t;
-}
-
-val mknoloc : 'a -> 'a loc
-val mkloc : 'a -> t -> 'a loc
-
-val print: formatter -> t -> unit
-val print_compact: formatter -> t -> unit
-val print_filename: formatter -> string -> unit
-
-val absolute_path: string -> string
-
-val show_filename: string -> string
-    (** In -absname mode, return the absolute path for this filename.
-        Otherwise, returns the filename unchanged. *)
-
-
-val absname: bool ref
-
-(** Support for located errors *)
-
-type error =
-  {
-    loc: t;
-    msg: string;
-    sub: error list;
-    if_highlight: string; (* alternative message if locations are highlighted *)
-  }
-
-exception Already_displayed_error
-exception Error of error
-
-val error: ?loc:t -> ?sub:error list -> ?if_highlight:string -> string -> error
-
-val print_error_prefix : Format.formatter -> unit
-val pp_ksprintf : ?before:(formatter -> unit) -> (string -> 'a) -> ('b, formatter, unit, 'a) format4 -> 'b
-
-val errorf: ?loc:t -> ?sub:error list -> ?if_highlight:string
-            -> ('a, Format.formatter, unit, error) format4 -> 'a
-
-val raise_errorf: ?loc:t -> ?sub:error list -> ?if_highlight:string
-            -> ('a, Format.formatter, unit, 'b) format4 -> 'a
-
-val error_of_printer: t -> (formatter -> 'a -> unit) -> 'a -> error
-
-val error_of_printer_file: (formatter -> 'a -> unit) -> 'a -> error
-
-val error_of_exn: exn -> [ `Ok of error | `Already_displayed ] option
-
-val register_error_of_exn: (exn -> error option) -> unit
-(** Each compiler module which defines a custom type of exception
-    which can surface as a user-visible error should register
-    a "printer" for this exception using [register_error_of_exn].
-    The result of the printer is an [error] value containing
-    a location, a message, and optionally sub-messages (each of them
-    being located as well). *)
-
-val report_error: formatter -> error -> unit
-
-val error_reporter : (formatter -> error -> unit) ref
-(** Hook for intercepting error reports. *)
-
-val default_error_reporter : formatter -> error -> unit
-(** Original error reporter for use in hooks. *)
-
-val report_exception: formatter -> exn -> unit
-(** Reraise the exception if it is unknown. *)
-
-val deprecated: ?def:t -> ?use:t -> t -> string -> unit
diff --git a/src/compiler-libs-406/longident.ml b/src/compiler-libs-406/longident.ml
deleted file mode 100644
index 6f5d5398..00000000
--- a/src/compiler-libs-406/longident.ml
+++ /dev/null
@@ -1,49 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-type t =
-    Lident of string
-  | Ldot of t * string
-  | Lapply of t * t
-
-let rec flat accu = function
-    Lident s -> s :: accu
-  | Ldot(lid, s) -> flat (s :: accu) lid
-  | Lapply(_, _) -> Misc.fatal_error "Longident.flat"
-
-let flatten lid = flat [] lid
-
-let last = function
-    Lident s -> s
-  | Ldot(_, s) -> s
-  | Lapply(_, _) -> Misc.fatal_error "Longident.last"
-
-let rec split_at_dots s pos =
-  try
-    let dot = String.index_from s pos '.' in
-    String.sub s pos (dot - pos) :: split_at_dots s (dot + 1)
-  with Not_found ->
-    [String.sub s pos (String.length s - pos)]
-
-let unflatten l =
-  match l with
-  | [] -> None
-  | hd :: tl -> Some (List.fold_left (fun p s -> Ldot(p, s)) (Lident hd) tl)
-
-let parse s =
-  match unflatten (split_at_dots s 0) with
-  | None -> Lident ""  (* should not happen, but don't put assert false
-                          so as not to crash the toplevel (see Genprintval) *)
-  | Some v -> v
diff --git a/src/compiler-libs-406/longident.mli b/src/compiler-libs-406/longident.mli
deleted file mode 100644
index 5ffb16a8..00000000
--- a/src/compiler-libs-406/longident.mli
+++ /dev/null
@@ -1,26 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Long identifiers, used in parsetree. *)
-
-type t =
-    Lident of string
-  | Ldot of t * string
-  | Lapply of t * t
-
-val flatten: t -> string list
-val unflatten: string list -> t option
-val last: t -> string
-val parse: string -> t
diff --git a/src/compiler-libs-406/misc.ml b/src/compiler-libs-406/misc.ml
deleted file mode 100644
index 446bcf31..00000000
--- a/src/compiler-libs-406/misc.ml
+++ /dev/null
@@ -1,745 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Errors *)
-
-exception Fatal_error
-
-
-
-let fatal_error msg =
-  prerr_string ">> Fatal error: "; prerr_endline msg; raise Fatal_error
-
-let fatal_errorf fmt = Format.kasprintf fatal_error fmt
-
-(* Exceptions *)
-
-let try_finally work cleanup =
-  let result = (try work () with e -> cleanup (); raise e) in
-  cleanup ();
-  result
-;;
-
-type ref_and_value = R : 'a ref * 'a -> ref_and_value
-
-let protect_refs =
-  let set_refs l = List.iter (fun (R (r, v)) -> r := v) l in
-  fun refs f ->
-    let backup = List.map (fun (R (r, _)) -> R (r, !r)) refs in
-    set_refs refs;
-    match f () with
-    | x           -> set_refs backup; x
-    | exception e -> set_refs backup; raise e
-
-(* List functions *)
-
-let rec map_end f l1 l2 =
-  match l1 with
-    [] -> l2
-  | hd::tl -> f hd :: map_end f tl l2
-
-let rec map_left_right f = function
-    [] -> []
-  | hd::tl -> let res = f hd in res :: map_left_right f tl
-
-let rec for_all2 pred l1 l2 =
-  match (l1, l2) with
-    ([], []) -> true
-  | (hd1::tl1, hd2::tl2) -> pred hd1 hd2 && for_all2 pred tl1 tl2
-  | (_, _) -> false
-
-let rec replicate_list elem n =
-  if n <= 0 then [] else elem :: replicate_list elem (n-1)
-
-let rec list_remove x = function
-    [] -> []
-  | hd :: tl ->
-      if hd = x then tl else hd :: list_remove x tl
-
-let rec split_last = function
-    [] -> assert false
-  | [x] -> ([], x)
-  | hd :: tl ->
-      let (lst, last) = split_last tl in
-      (hd :: lst, last)
-
-module Stdlib = struct
-  module List = struct
-    type 'a t = 'a list
-
-    let rec compare cmp l1 l2 =
-      match l1, l2 with
-      | [], [] -> 0
-      | [], _::_ -> -1
-      | _::_, [] -> 1
-      | h1::t1, h2::t2 ->
-        let c = cmp h1 h2 in
-        if c <> 0 then c
-        else compare cmp t1 t2
-
-    let rec equal eq l1 l2 =
-      match l1, l2 with
-      | ([], []) -> true
-      | (hd1 :: tl1, hd2 :: tl2) -> eq hd1 hd2 && equal eq tl1 tl2
-      | (_, _) -> false
-
-    let filter_map f l =
-      let rec aux acc l =
-        match l with
-        | [] -> List.rev acc
-        | h :: t ->
-          match f h with
-          | None -> aux acc t
-          | Some v -> aux (v :: acc) t
-      in
-      aux [] l
-
-    let map2_prefix f l1 l2 =
-      let rec aux acc l1 l2 =
-        match l1, l2 with
-        | [], _ -> (List.rev acc, l2)
-        | _ :: _, [] -> raise (Invalid_argument "map2_prefix")
-        | h1::t1, h2::t2 ->
-          let h = f h1 h2 in
-          aux (h :: acc) t1 t2
-      in
-      aux [] l1 l2
-
-    let some_if_all_elements_are_some l =
-      let rec aux acc l =
-        match l with
-        | [] -> Some (List.rev acc)
-        | None :: _ -> None
-        | Some h :: t -> aux (h :: acc) t
-      in
-      aux [] l
-
-    let split_at n l =
-      let rec aux n acc l =
-        if n = 0
-        then List.rev acc, l
-        else
-          match l with
-          | [] -> raise (Invalid_argument "split_at")
-          | t::q -> aux (n-1) (t::acc) q
-      in
-      aux n [] l
-  end
-
-  module Option = struct
-    type 'a t = 'a option
-
-    let equal eq o1 o2 =
-      match o1, o2 with
-      | None, None -> true
-      | Some e1, Some e2 -> eq e1 e2
-      | _, _ -> false
-
-    let iter f = function
-      | Some x -> f x
-      | None -> ()
-
-    let map f = function
-      | Some x -> Some (f x)
-      | None -> None
-
-    let fold f a b =
-      match a with
-      | None -> b
-      | Some a -> f a b
-
-    let value_default f ~default a =
-      match a with
-      | None -> default
-      | Some a -> f a
-  end
-
-  module Array = struct
-    let exists2 p a1 a2 =
-      let n = Array.length a1 in
-      if Array.length a2 <> n then invalid_arg "Misc.Stdlib.Array.exists2";
-      let rec loop i =
-        if i = n then false
-        else if p (Array.unsafe_get a1 i) (Array.unsafe_get a2 i) then true
-        else loop (succ i) in
-      loop 0
-  end
-end
-
-let may = Stdlib.Option.iter
-let may_map = Stdlib.Option.map
-
-(* File functions *)
-
-let find_in_path path name =
-  if not (Filename.is_implicit name) then
-    if Sys.file_exists name then name else raise Not_found
-  else begin
-    let rec try_dir = function
-      [] -> raise Not_found
-    | dir::rem ->
-        let fullname = Filename.concat dir name in
-        if Sys.file_exists fullname then fullname else try_dir rem
-    in try_dir path
-  end
-
-let find_in_path_rel path name =
-  let rec simplify s =
-    let open Filename in
-    let base = basename s in
-    let dir = dirname s in
-    if dir = s then dir
-    else if base = current_dir_name then simplify dir
-    else concat (simplify dir) base
-  in
-  let rec try_dir = function
-    [] -> raise Not_found
-  | dir::rem ->
-      let fullname = simplify (Filename.concat dir name) in
-      if Sys.file_exists fullname then fullname else try_dir rem
-  in try_dir path
-
-let find_in_path_uncap path name =
-  let uname = String.uncapitalize_ascii name in
-  let rec try_dir = function
-    [] -> raise Not_found
-  | dir::rem ->
-      let fullname = Filename.concat dir name
-      and ufullname = Filename.concat dir uname in
-      if Sys.file_exists ufullname then ufullname
-      else if Sys.file_exists fullname then fullname
-      else try_dir rem
-  in try_dir path
-
-let remove_file filename =
-  try
-    if Sys.file_exists filename
-    then Sys.remove filename
-  with Sys_error _msg ->
-    ()
-
-(* Expand a -I option: if it starts with +, make it relative to the standard
-   library directory *)
-
-let expand_directory alt s =
-  if String.length s > 0 && s.[0] = '+'
-  then Filename.concat alt
-                       (String.sub s 1 (String.length s - 1))
-  else s
-
-(* Hashtable functions *)
-
-let create_hashtable size init =
-  let tbl = Hashtbl.create size in
-  List.iter (fun (key, data) -> Hashtbl.add tbl key data) init;
-  tbl
-
-(* File copy *)
-
-let copy_file ic oc =
-  let buff = Bytes.create 0x1000 in
-  let rec copy () =
-    let n = input ic buff 0 0x1000 in
-    if n = 0 then () else (output oc buff 0 n; copy())
-  in copy()
-
-let copy_file_chunk ic oc len =
-  let buff = Bytes.create 0x1000 in
-  let rec copy n =
-    if n <= 0 then () else begin
-      let r = input ic buff 0 (min n 0x1000) in
-      if r = 0 then raise End_of_file else (output oc buff 0 r; copy(n-r))
-    end
-  in copy len
-
-let string_of_file ic =
-  let b = Buffer.create 0x10000 in
-  let buff = Bytes.create 0x1000 in
-  let rec copy () =
-    let n = input ic buff 0 0x1000 in
-    if n = 0 then Buffer.contents b else
-      (Buffer.add_subbytes b buff 0 n; copy())
-  in copy()
-
-let output_to_bin_file_directly filename fn =  
-  let oc = open_out_bin filename in 
-  match fn filename oc with 
-  | v -> close_out oc ; v 
-  | exception e -> close_out oc ; raise e
-
-let output_to_file_via_temporary ?(mode = [Open_text]) filename fn =
-  let (temp_filename, oc) =
-    Filename.open_temp_file
-       ~mode ~perms:0o666 ~temp_dir:(Filename.dirname filename)
-       (Filename.basename filename) ".tmp" in
-    (* The 0o666 permissions will be modified by the umask.  It's just
-       like what [open_out] and [open_out_bin] do.
-       With temp_dir = dirname filename, we ensure that the returned
-       temp file is in the same directory as filename itself, making
-       it safe to rename temp_filename to filename later.
-       With prefix = basename filename, we are almost certain that
-       the first generated name will be unique.  A fixed prefix
-       would work too but might generate more collisions if many
-       files are being produced simultaneously in the same directory. *)
-  match fn temp_filename oc with
-  | res ->
-      close_out oc;
-      begin try
-        Sys.rename temp_filename filename; res
-      with exn ->
-        remove_file temp_filename; raise exn
-      end
-  | exception exn ->
-      close_out oc; remove_file temp_filename; raise exn
-
-(* Integer operations *)
-
-let rec log2 n =
-  if n <= 1 then 0 else 1 + log2(n asr 1)
-
-let align n a =
-  if n >= 0 then (n + a - 1) land (-a) else n land (-a)
-
-let no_overflow_add a b = (a lxor b) lor (a lxor (lnot (a+b))) < 0
-
-let no_overflow_sub a b = (a lxor (lnot b)) lor (b lxor (a-b)) < 0
-
-let no_overflow_mul a b = b <> 0 && (a * b) / b = a
-
-let no_overflow_lsl a k =
-  0 <= k && k < Sys.word_size && min_int asr k <= a && a <= max_int asr k
-
-module Int_literal_converter = struct
-  (* To convert integer literals, allowing max_int + 1 (PR#4210) *)
-  let cvt_int_aux str neg of_string =
-    if String.length str = 0 || str.[0]= '-'
-    then of_string str
-    else neg (of_string ("-" ^ str))
-  let int s = cvt_int_aux s (~-) int_of_string
-  let int32 s = cvt_int_aux s Int32.neg Int32.of_string
-  let int64 s = cvt_int_aux s Int64.neg Int64.of_string
-  let nativeint s = cvt_int_aux s Nativeint.neg Nativeint.of_string
-end
-
-(* String operations *)
-
-let chop_extensions file =
-  let dirname = Filename.dirname file and basename = Filename.basename file in
-  try
-    let pos = String.index basename '.' in
-    let basename = String.sub basename 0 pos in
-    if Filename.is_implicit file && dirname = Filename.current_dir_name then
-      basename
-    else
-      Filename.concat dirname basename
-  with Not_found -> file
-
-let search_substring pat str start =
-  let rec search i j =
-    if j >= String.length pat then i
-    else if i + j >= String.length str then raise Not_found
-    else if str.[i + j] = pat.[j] then search i (j+1)
-    else search (i+1) 0
-  in search start 0
-
-let replace_substring ~before ~after str =
-  let rec search acc curr =
-    match search_substring before str curr with
-      | next ->
-         let prefix = String.sub str curr (next - curr) in
-         search (prefix :: acc) (next + String.length before)
-      | exception Not_found ->
-        let suffix = String.sub str curr (String.length str - curr) in
-        List.rev (suffix :: acc)
-  in String.concat after (search [] 0)
-
-let rev_split_words s =
-  let rec split1 res i =
-    if i >= String.length s then res else begin
-      match s.[i] with
-        ' ' | '\t' | '\r' | '\n' -> split1 res (i+1)
-      | _ -> split2 res i (i+1)
-    end
-  and split2 res i j =
-    if j >= String.length s then String.sub s i (j-i) :: res else begin
-      match s.[j] with
-        ' ' | '\t' | '\r' | '\n' -> split1 (String.sub s i (j-i) :: res) (j+1)
-      | _ -> split2 res i (j+1)
-    end
-  in split1 [] 0
-
-let get_ref r =
-  let v = !r in
-  r := []; v
-
-let fst3 (x, _, _) = x
-let snd3 (_,x,_) = x
-let thd3 (_,_,x) = x
-
-let fst4 (x, _, _, _) = x
-let snd4 (_,x,_, _) = x
-let thd4 (_,_,x,_) = x
-let for4 (_,_,_,x) = x
-
-
-module LongString = struct
-  type t = bytes array
-
-  let create str_size =
-    let tbl_size = str_size / Sys.max_string_length + 1 in
-    let tbl = Array.make tbl_size Bytes.empty in
-    for i = 0 to tbl_size - 2 do
-      tbl.(i) <- Bytes.create Sys.max_string_length;
-    done;
-    tbl.(tbl_size - 1) <- Bytes.create (str_size mod Sys.max_string_length);
-    tbl
-
-  let length tbl =
-    let tbl_size = Array.length tbl in
-    Sys.max_string_length * (tbl_size - 1) + Bytes.length tbl.(tbl_size - 1)
-
-  let get tbl ind =
-    Bytes.get tbl.(ind / Sys.max_string_length) (ind mod Sys.max_string_length)
-
-  let set tbl ind c =
-    Bytes.set tbl.(ind / Sys.max_string_length) (ind mod Sys.max_string_length)
-              c
-
-  let blit src srcoff dst dstoff len =
-    for i = 0 to len - 1 do
-      set dst (dstoff + i) (get src (srcoff + i))
-    done
-
-  let output oc tbl pos len =
-    for i = pos to pos + len - 1 do
-      output_char oc (get tbl i)
-    done
-
-  let unsafe_blit_to_bytes src srcoff dst dstoff len =
-    for i = 0 to len - 1 do
-      Bytes.unsafe_set dst (dstoff + i) (get src (srcoff + i))
-    done
-
-  let input_bytes ic len =
-    let tbl = create len in
-    Array.iter (fun str -> really_input ic str 0 (Bytes.length str)) tbl;
-    tbl
-end
-
-
-let edit_distance a b cutoff =
-  let la, lb = String.length a, String.length b in
-  let cutoff =
-    (* using max_int for cutoff would cause overflows in (i + cutoff + 1);
-       we bring it back to the (max la lb) worstcase *)
-    min (max la lb) cutoff in
-  if abs (la - lb) > cutoff then None
-  else begin
-    (* initialize with 'cutoff + 1' so that not-yet-written-to cases have
-       the worst possible cost; this is useful when computing the cost of
-       a case just at the boundary of the cutoff diagonal. *)
-    let m = Array.make_matrix (la + 1) (lb + 1) (cutoff + 1) in
-    m.(0).(0) <- 0;
-    for i = 1 to la do
-      m.(i).(0) <- i;
-    done;
-    for j = 1 to lb do
-      m.(0).(j) <- j;
-    done;
-    for i = 1 to la do
-      for j = max 1 (i - cutoff - 1) to min lb (i + cutoff + 1) do
-        let cost = if a.[i-1] = b.[j-1] then 0 else 1 in
-        let best =
-          (* insert, delete or substitute *)
-          min (1 + min m.(i-1).(j) m.(i).(j-1)) (m.(i-1).(j-1) + cost)
-        in
-        let best =
-          (* swap two adjacent letters; we use "cost" again in case of
-             a swap between two identical letters; this is slightly
-             redundant as this is a double-substitution case, but it
-             was done this way in most online implementations and
-             imitation has its virtues *)
-          if not (i > 1 && j > 1 && a.[i-1] = b.[j-2] && a.[i-2] = b.[j-1])
-          then best
-          else min best (m.(i-2).(j-2) + cost)
-        in
-        m.(i).(j) <- best
-      done;
-    done;
-    let result = m.(la).(lb) in
-    if result > cutoff
-    then None
-    else Some result
-  end
-
-let spellcheck env name =
-  let cutoff =
-    match String.length name with
-      | 1 | 2 -> 0
-      | 3 | 4 -> 1
-      | 5 | 6 -> 2
-      | _ -> 3
-  in
-  let compare target acc head =
-    match edit_distance target head cutoff with
-      | None -> acc
-      | Some dist ->
-         let (best_choice, best_dist) = acc in
-         if dist < best_dist then ([head], dist)
-         else if dist = best_dist then (head :: best_choice, dist)
-         else acc
-  in
-  fst (List.fold_left (compare name) ([], max_int) env)
-
-let did_you_mean ppf get_choices =
-  (* flush now to get the error report early, in the (unheard of) case
-     where the search in the get_choices function would take a bit of
-     time; in the worst case, the user has seen the error, she can
-     interrupt the process before the spell-checking terminates. *)
-  Format.fprintf ppf "@?";
-  match get_choices () with
-  | [] -> ()
-  | choices ->
-     let rest, last = split_last choices in
-     Format.fprintf ppf "@\nHint: Did you mean %s%s%s?@?"
-       (String.concat ", " rest)
-       (if rest = [] then "" else " or ")
-       last
-
-let cut_at s c =
-  let pos = String.index s c in
-  String.sub s 0 pos, String.sub s (pos+1) (String.length s - pos - 1)
-
-
-module StringSet = Set.Make(struct type t = string let compare = compare end)
-module StringMap = Map.Make(struct type t = string let compare = compare end)
-
-(* Color handling *)
-module Color = struct
-  (* use ANSI color codes, see https://en.wikipedia.org/wiki/ANSI_escape_code *)
-  type color =
-    | Black
-    | Red
-    | Green
-    | Yellow
-    | Blue
-    | Magenta
-    | Cyan
-    | White
-  ;;
-
-  type style =
-    | FG of color (* foreground *)
-    | BG of color (* background *)
-    | Bold
-    | Reset
-    | Dim
-
-  let ansi_of_color = function
-    | Black -> "0"
-    | Red -> "1"
-    | Green -> "2"
-    | Yellow -> "3"
-    | Blue -> "4"
-    | Magenta -> "5"
-    | Cyan -> "6"
-    | White -> "7"
-
-  let code_of_style = function
-    | FG c -> "3" ^ ansi_of_color c
-    | BG c -> "4" ^ ansi_of_color c
-    | Bold -> "1"
-    | Reset -> "0"
-    | Dim -> "2"
-
-  let ansi_of_style_l l =
-    let s = match l with
-      | [] -> code_of_style Reset
-      | [s] -> code_of_style s
-      | _ -> String.concat ";" (List.map code_of_style l)
-    in
-    "\x1b[" ^ s ^ "m"
-
-  type styles = {
-    error: style list;
-    warning: style list;
-    loc: style list;
-  }
-
-  let default_styles = {
-    warning = [Bold; FG Magenta];
-    error = [Bold; FG Red];
-    loc = [Bold];
-  }
-
-  let cur_styles = ref default_styles
-  let get_styles () = !cur_styles
-  let set_styles s = cur_styles := s
-
-  (* map a tag to a style, if the tag is known.
-     @raise Not_found otherwise *)
-  let style_of_stag s = match s with
-    | Format.String_tag "error" -> (!cur_styles).error
-    | Format.String_tag "warning" -> (!cur_styles).warning
-    | Format.String_tag "loc" -> (!cur_styles).loc
-    | Format.String_tag "info" -> [Bold; FG Yellow]
-    | Format.String_tag "dim" -> [Dim]
-    | Format.String_tag "filename" -> [FG Cyan]
-    | _ -> raise Not_found
-
-  let color_enabled = ref true
-
-  (* either prints the tag of [s] or delegates to [or_else] *)
-  let mark_open_stag ~or_else s =
-    try
-      let style = style_of_stag s in
-      if !color_enabled then ansi_of_style_l style else ""
-    with Not_found -> or_else s
-
-  let mark_close_stag ~or_else s =
-    try
-      let _ = style_of_stag s in
-      if !color_enabled then ansi_of_style_l [Reset] else ""
-    with Not_found -> or_else s
-
-  (* add color handling to formatter [ppf] *)
-  let set_color_tag_handling ppf =
-    let open Format in
-    let functions = pp_get_formatter_stag_functions ppf () in
-    let functions' = {functions with
-      mark_open_stag=(mark_open_stag ~or_else:functions.mark_open_stag);
-      mark_close_stag=(mark_close_stag ~or_else:functions.mark_close_stag);
-    } in
-    pp_set_mark_tags ppf true; (* enable tags *)
-    pp_set_formatter_stag_functions ppf functions';
-    (* also setup margins *)
-    pp_set_margin ppf (pp_get_margin std_formatter());
-    ()
-
-  external isatty : out_channel -> bool = "caml_sys_isatty"
-
-  (* reasonable heuristic on whether colors should be enabled *)
-  let should_enable_color () =
-    let term = try Sys.getenv "TERM" with Not_found -> "" in
-    term <> "dumb"
-    && term <> ""
-    && isatty stderr
-
-  type setting = Auto | Always | Never
-
-  let setup =
-    let first = ref true in (* initialize only once *)
-    let formatter_l =
-      [Format.std_formatter; Format.err_formatter; Format.str_formatter]
-    in
-    fun o ->
-      if !first then (
-        first := false;
-        Format.set_mark_tags true;
-        List.iter set_color_tag_handling formatter_l;
-        color_enabled := (match o with
-            | Some Always -> true
-            | Some Auto -> should_enable_color ()
-            | Some Never -> false
-            | None -> should_enable_color ())
-      );
-      ()
-end
-
-let normalise_eol s =
-  let b = Buffer.create 80 in
-    for i = 0 to String.length s - 1 do
-      if s.[i] <> '\r' then Buffer.add_char b s.[i]
-    done;
-    Buffer.contents b
-
-let delete_eol_spaces src =
-  let len_src = String.length src in
-  let dst = Bytes.create len_src in
-  let rec loop i_src i_dst =
-    if i_src = len_src then
-      i_dst
-    else
-      match src.[i_src] with
-      | ' ' | '\t' ->
-        loop_spaces 1 (i_src + 1) i_dst
-      | c ->
-        Bytes.set dst i_dst c;
-        loop (i_src + 1) (i_dst + 1)
-  and loop_spaces spaces i_src i_dst =
-    if i_src = len_src then
-      i_dst
-    else
-      match src.[i_src] with
-      | ' ' | '\t' ->
-        loop_spaces (spaces + 1) (i_src + 1) i_dst
-      | '\n' ->
-        Bytes.set dst i_dst '\n';
-        loop (i_src + 1) (i_dst + 1)
-      | _ ->
-        for n = 0 to spaces do
-          Bytes.set dst (i_dst + n) src.[i_src - spaces + n]
-        done;
-        loop (i_src + 1) (i_dst + spaces + 1)
-  in
-  let stop = loop 0 0 in
-  Bytes.sub_string dst 0 stop
-
-type hook_info = {
-  sourcefile : string;
-}
-
-exception HookExnWrapper of
-    {
-      error: exn;
-      hook_name: string;
-      hook_info: hook_info;
-    }
-
-exception HookExn of exn
-
-let raise_direct_hook_exn e = raise (HookExn e)
-
-let fold_hooks list hook_info ast =
-  List.fold_left (fun ast (hook_name,f) ->
-    try
-      f hook_info ast
-    with
-    | HookExn e -> raise e
-    | error -> raise (HookExnWrapper {error; hook_name; hook_info})
-       (* when explicit reraise with backtrace will be available,
-          it should be used here *)
-
-  ) ast (List.sort compare list)
-
-module type HookSig = sig
-  type t
-
-  val add_hook : string -> (hook_info -> t -> t) -> unit
-  val apply_hooks : hook_info -> t -> t
-end
-
-module MakeHooks(M: sig
-    type t
-  end) : HookSig with type t = M.t
-= struct
-
-  type t = M.t
-
-  let hooks = ref []
-  let add_hook name f = hooks := (name, f) :: !hooks
-  let apply_hooks sourcefile intf =
-    fold_hooks !hooks sourcefile intf
-end
diff --git a/src/compiler-libs-406/outcometree.mli b/src/compiler-libs-406/outcometree.mli
deleted file mode 100644
index e4c62c31..00000000
--- a/src/compiler-libs-406/outcometree.mli
+++ /dev/null
@@ -1,144 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*      Daniel de Rauglaudre, projet Cristal, INRIA Rocquencourt          *)
-(*                                                                        *)
-(*   Copyright 2001 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Module [Outcometree]: results displayed by the toplevel *)
-
-(* These types represent messages that the toplevel displays as normal
-   results or errors. The real displaying is customisable using the hooks:
-      [Toploop.print_out_value]
-      [Toploop.print_out_type]
-      [Toploop.print_out_sig_item]
-      [Toploop.print_out_phrase] *)
-
-type out_ident =
-  | Oide_apply of out_ident * out_ident
-  | Oide_dot of out_ident * string
-  | Oide_ident of string
-
-type out_string =
-  | Ostr_string
-  | Ostr_bytes
-
-type out_attribute =
-  { oattr_name: string }
-
-type out_value =
-  | Oval_array of out_value list
-  | Oval_char of char
-  | Oval_constr of out_ident * out_value list
-  | Oval_ellipsis
-  | Oval_float of float
-  | Oval_int of int
-  | Oval_int32 of int32
-  | Oval_int64 of int64
-  | Oval_nativeint of nativeint
-  | Oval_list of out_value list
-  | Oval_printer of (Format.formatter -> unit)
-  | Oval_record of (out_ident * out_value) list
-  | Oval_string of string * int * out_string (* string, size-to-print, kind *)
-  | Oval_stuff of string
-  | Oval_tuple of out_value list
-  | Oval_variant of string * out_value option
-
-type out_type =
-  | Otyp_abstract
-  | Otyp_open
-  | Otyp_alias of out_type * string
-  | Otyp_arrow of string * out_type * out_type
-  | Otyp_class of bool * out_ident * out_type list
-  | Otyp_constr of out_ident * out_type list
-  | Otyp_manifest of out_type * out_type
-  | Otyp_object of (string * out_type) list * bool option
-  | Otyp_record of (string * bool * out_type) list
-  | Otyp_stuff of string
-  | Otyp_sum of (string * out_type list * out_type option) list
-  | Otyp_tuple of out_type list
-  | Otyp_var of bool * string
-  | Otyp_variant of
-      bool * out_variant * bool * (string list) option
-  | Otyp_poly of string list * out_type
-  | Otyp_module of string * string list * out_type list
-  | Otyp_attribute of out_type * out_attribute
-
-and out_variant =
-  | Ovar_fields of (string * bool * out_type list) list
-  | Ovar_typ of out_type
-
-type out_class_type =
-  | Octy_constr of out_ident * out_type list
-  | Octy_arrow of string * out_type * out_class_type
-  | Octy_signature of out_type option * out_class_sig_item list
-and out_class_sig_item =
-  | Ocsg_constraint of out_type * out_type
-  | Ocsg_method of string * bool * bool * out_type
-  | Ocsg_value of string * bool * bool * out_type
-
-type out_module_type =
-  | Omty_abstract
-  | Omty_functor of string * out_module_type option * out_module_type
-  | Omty_ident of out_ident
-  | Omty_signature of out_sig_item list
-  | Omty_alias of out_ident
-and out_sig_item =
-  | Osig_class of
-      bool * string * (string * (bool * bool)) list * out_class_type *
-        out_rec_status
-  | Osig_class_type of
-      bool * string * (string * (bool * bool)) list * out_class_type *
-        out_rec_status
-  | Osig_typext of out_extension_constructor * out_ext_status
-  | Osig_modtype of string * out_module_type
-  | Osig_module of string * out_module_type * out_rec_status
-  | Osig_type of out_type_decl * out_rec_status
-  | Osig_value of out_val_decl
-  | Osig_ellipsis
-and out_type_decl =
-  { otype_name: string;
-    otype_params: (string * (bool * bool)) list;
-    otype_type: out_type;
-    otype_private: Asttypes.private_flag;
-    otype_immediate: bool;
-    otype_unboxed: bool;
-    otype_cstrs: (out_type * out_type) list }
-and out_extension_constructor =
-  { oext_name: string;
-    oext_type_name: string;
-    oext_type_params: string list;
-    oext_args: out_type list;
-    oext_ret_type: out_type option;
-    oext_private: Asttypes.private_flag }
-and out_type_extension =
-  { otyext_name: string;
-    otyext_params: string list;
-    otyext_constructors: (string * out_type list * out_type option) list;
-    otyext_private: Asttypes.private_flag }
-and out_val_decl =
-  { oval_name: string;
-    oval_type: out_type;
-    oval_prims: string list;
-    oval_attributes: out_attribute list }
-and out_rec_status =
-  | Orec_not
-  | Orec_first
-  | Orec_next
-and out_ext_status =
-  | Oext_first
-  | Oext_next
-  | Oext_exception
-
-type out_phrase =
-  | Ophr_eval of out_value * out_type
-  | Ophr_signature of (out_sig_item * out_value option) list
-  | Ophr_exception of (exn * out_value)
diff --git a/src/compiler-libs-406/parser.ml b/src/compiler-libs-406/parser.ml
deleted file mode 100644
index cbe441b5..00000000
--- a/src/compiler-libs-406/parser.ml
+++ /dev/null
@@ -1,12782 +0,0 @@
-type token =
-  | AMPERAMPER
-  | AMPERSAND
-  | AND
-  | AS
-  | ASSERT
-  | BACKQUOTE
-  | BANG
-  | BAR
-  | BARBAR
-  | BARRBRACKET
-  | BEGIN
-  | CHAR of (char)
-  | CLASS
-  | COLON
-  | COLONCOLON
-  | COLONEQUAL
-  | COLONGREATER
-  | COMMA
-  | CONSTRAINT
-  | DO
-  | DONE
-  | DOT
-  | DOTDOT
-  | DOWNTO
-  | ELSE
-  | END
-  | EOF
-  | EQUAL
-  | EXCEPTION
-  | EXTERNAL
-  | FALSE
-  | FLOAT of (string * char option)
-  | FOR
-  | FUN
-  | FUNCTION
-  | FUNCTOR
-  | GREATER
-  | GREATERRBRACE
-  | GREATERRBRACKET
-  | IF
-  | IN
-  | INCLUDE
-  | INFIXOP0 of (string)
-  | INFIXOP1 of (string)
-  | INFIXOP2 of (string)
-  | INFIXOP3 of (string)
-  | INFIXOP4 of (string)
-  | DOTOP of (string)
-  | INHERIT
-  | INITIALIZER
-  | INT of (string * char option)
-  | LABEL of (string)
-  | LAZY
-  | LBRACE
-  | LBRACELESS
-  | LBRACKET
-  | LBRACKETBAR
-  | LBRACKETLESS
-  | LBRACKETGREATER
-  | LBRACKETPERCENT
-  | LBRACKETPERCENTPERCENT
-  | LESS
-  | LESSMINUS
-  | LET
-  | LIDENT of (string)
-  | LPAREN
-  | LBRACKETAT
-  | LBRACKETATAT
-  | LBRACKETATATAT
-  | MATCH
-  | METHOD
-  | MINUS
-  | MINUSDOT
-  | MINUSGREATER
-  | MODULE
-  | MUTABLE
-  | NEW
-  | NONREC
-  | OBJECT
-  | OF
-  | OPEN
-  | OPTLABEL of (string)
-  | OR
-  | PERCENT
-  | PLUS
-  | PLUSDOT
-  | PLUSEQ
-  | PREFIXOP of (string)
-  | PRIVATE
-  | QUESTION
-  | QUOTE
-  | RBRACE
-  | RBRACKET
-  | REC
-  | RPAREN
-  | SEMI
-  | SEMISEMI
-  | HASH
-  | HASHOP of (string)
-  | SIG
-  | STAR
-  | STRING of (string * string option)
-  | STRUCT
-  | THEN
-  | TILDE
-  | TO
-  | TRUE
-  | TRY
-  | TYPE
-  | UIDENT of (string)
-  | UNDERSCORE
-  | VAL
-  | VIRTUAL
-  | WHEN
-  | WHILE
-  | WITH
-  | COMMENT of (string * Location.t)
-  | DOCSTRING of (Docstrings.docstring)
-  | EOL
-
-open Parsing;;
-let _ = parse_error;;
-# 19 "ml/parser.mly"
-open Location
-open Asttypes
-open Longident
-open Parsetree
-open Ast_helper
-open Docstrings
-
-let mktyp d = Typ.mk ~loc:(symbol_rloc()) d
-let mkpat d = Pat.mk ~loc:(symbol_rloc()) d
-let mkexp d = Exp.mk ~loc:(symbol_rloc()) d
-let mkmty ?attrs d = Mty.mk ~loc:(symbol_rloc()) ?attrs d
-let mksig d = Sig.mk ~loc:(symbol_rloc()) d
-let mkmod ?attrs d = Mod.mk ~loc:(symbol_rloc()) ?attrs d
-let mkstr d = Str.mk ~loc:(symbol_rloc()) d
-let mkcty ?attrs d = Cty.mk ~loc:(symbol_rloc()) ?attrs d
-let mkctf ?attrs ?docs d =
-  Ctf.mk ~loc:(symbol_rloc()) ?attrs ?docs d
-let mkcf ?attrs ?docs d =
-  Cf.mk ~loc:(symbol_rloc()) ?attrs ?docs d
-
-let mkrhs rhs pos = mkloc rhs (rhs_loc pos)
-
-let reloc_pat x = { x with ppat_loc = symbol_rloc () };;
-let reloc_exp x = { x with pexp_loc = symbol_rloc () };;
-
-let mkoperator name pos =
-  let loc = rhs_loc pos in
-  Exp.mk ~loc (Pexp_ident(mkloc (Lident name) loc))
-
-let mkpatvar name pos =
-  Pat.mk ~loc:(rhs_loc pos) (Ppat_var (mkrhs name pos))
-
-(*
-  Ghost expressions and patterns:
-  expressions and patterns that do not appear explicitly in the
-  source file they have the loc_ghost flag set to true.
-  Then the profiler will not try to instrument them and the
-  -annot option will not try to display their type.
-
-  Every grammar rule that generates an element with a location must
-  make at most one non-ghost element, the topmost one.
-
-  How to tell whether your location must be ghost:
-  A location corresponds to a range of characters in the source file.
-  If the location contains a piece of code that is syntactically
-  valid (according to the documentation), and corresponds to the
-  AST node, then the location must be real; in all other cases,
-  it must be ghost.
-*)
-let ghexp d = Exp.mk ~loc:(symbol_gloc ()) d
-let ghpat d = Pat.mk ~loc:(symbol_gloc ()) d
-let ghtyp d = Typ.mk ~loc:(symbol_gloc ()) d
-let ghloc d = { txt = d; loc = symbol_gloc () }
-let ghstr d = Str.mk ~loc:(symbol_gloc()) d
-let ghsig d = Sig.mk ~loc:(symbol_gloc()) d
-
-let mkinfix arg1 name arg2 =
-  mkexp(Pexp_apply(mkoperator name 2, [Nolabel, arg1; Nolabel, arg2]))
-
-let neg_string f =
-  if String.length f > 0 && f.[0] = '-'
-  then String.sub f 1 (String.length f - 1)
-  else "-" ^ f
-
-let mkuminus name arg =
-  match name, arg.pexp_desc with
-  | "-", Pexp_constant(Pconst_integer (n,m)) ->
-      mkexp(Pexp_constant(Pconst_integer(neg_string n,m)))
-  | ("-" | "-."), Pexp_constant(Pconst_float (f, m)) ->
-      mkexp(Pexp_constant(Pconst_float(neg_string f, m)))
-  | _ ->
-      mkexp(Pexp_apply(mkoperator ("~" ^ name) 1, [Nolabel, arg]))
-
-let mkuplus name arg =
-  let desc = arg.pexp_desc in
-  match name, desc with
-  | "+", Pexp_constant(Pconst_integer _)
-  | ("+" | "+."), Pexp_constant(Pconst_float _) -> mkexp desc
-  | _ ->
-      mkexp(Pexp_apply(mkoperator ("~" ^ name) 1, [Nolabel, arg]))
-
-let mkexp_cons consloc args loc =
-  Exp.mk ~loc (Pexp_construct(mkloc (Lident "::") consloc, Some args))
-
-let mkpat_cons consloc args loc =
-  Pat.mk ~loc (Ppat_construct(mkloc (Lident "::") consloc, Some args))
-
-let rec mktailexp nilloc = function
-    [] ->
-      let loc = { nilloc with loc_ghost = true } in
-      let nil = { txt = Lident "[]"; loc = loc } in
-      Exp.mk ~loc (Pexp_construct (nil, None))
-  | e1 :: el ->
-      let exp_el = mktailexp nilloc el in
-      let loc = {loc_start = e1.pexp_loc.loc_start;
-               loc_end = exp_el.pexp_loc.loc_end;
-               loc_ghost = true}
-      in
-      let arg = Exp.mk ~loc (Pexp_tuple [e1; exp_el]) in
-      mkexp_cons {loc with loc_ghost = true} arg loc
-
-let rec mktailpat nilloc = function
-    [] ->
-      let loc = { nilloc with loc_ghost = true } in
-      let nil = { txt = Lident "[]"; loc = loc } in
-      Pat.mk ~loc (Ppat_construct (nil, None))
-  | p1 :: pl ->
-      let pat_pl = mktailpat nilloc pl in
-      let loc = {loc_start = p1.ppat_loc.loc_start;
-               loc_end = pat_pl.ppat_loc.loc_end;
-               loc_ghost = true}
-      in
-      let arg = Pat.mk ~loc (Ppat_tuple [p1; pat_pl]) in
-      mkpat_cons {loc with loc_ghost = true} arg loc
-
-let mkstrexp e attrs =
-  { pstr_desc = Pstr_eval (e, attrs); pstr_loc = e.pexp_loc }
-
-let mkexp_constraint e (t1, t2) =
-  match t1, t2 with
-  | Some t, None -> ghexp(Pexp_constraint(e, t))
-  | _, Some t -> ghexp(Pexp_coerce(e, t1, t))
-  | None, None -> assert false
-
-let mkexp_opt_constraint e = function
-  | None -> e
-  | Some constraint_ -> mkexp_constraint e constraint_
-
-let mkpat_opt_constraint p = function
-  | None -> p
-  | Some typ -> mkpat (Ppat_constraint(p, typ))
-
-let array_function str name =
-  ghloc (Ldot(Lident str, (if !Clflags.fast then "unsafe_" ^ name else name)))
-
-let syntax_error () =
-  raise Syntaxerr.Escape_error
-
-let unclosed opening_name opening_num closing_name closing_num =
-  raise(Syntaxerr.Error(Syntaxerr.Unclosed(rhs_loc opening_num, opening_name,
-                                           rhs_loc closing_num, closing_name)))
-
-let expecting pos nonterm =
-    raise Syntaxerr.(Error(Expecting(rhs_loc pos, nonterm)))
-
-let not_expecting pos nonterm =
-    raise Syntaxerr.(Error(Not_expecting(rhs_loc pos, nonterm)))
-
-
-let lapply p1 p2 =
-  if !Clflags.applicative_functors
-  then Lapply(p1, p2)
-  else raise (Syntaxerr.Error(Syntaxerr.Applicative_path (symbol_rloc())))
-
-let exp_of_label lbl pos =
-  mkexp (Pexp_ident(mkrhs (Lident(Longident.last lbl)) pos))
-
-let pat_of_label lbl pos =
-  mkpat (Ppat_var (mkrhs (Longident.last lbl) pos))
-
-let mk_newtypes newtypes exp =
-  List.fold_right (fun newtype exp -> mkexp (Pexp_newtype (newtype, exp)))
-    newtypes exp
-
-let wrap_type_annotation newtypes core_type body =
-  let exp = mkexp(Pexp_constraint(body,core_type)) in
-  let exp = mk_newtypes newtypes exp in
-  (exp, ghtyp(Ptyp_poly(newtypes, Typ.varify_constructors newtypes core_type)))
-
-let wrap_exp_attrs body (ext, attrs) =
-  (* todo: keep exact location for the entire attribute *)
-  let body = {body with pexp_attributes = attrs @ body.pexp_attributes} in
-  match ext with
-  | None -> body
-  | Some id -> ghexp(Pexp_extension (id, PStr [mkstrexp body []]))
-
-let mkexp_attrs d attrs =
-  wrap_exp_attrs (mkexp d) attrs
-
-let wrap_typ_attrs typ (ext, attrs) =
-  (* todo: keep exact location for the entire attribute *)
-  let typ = {typ with ptyp_attributes = attrs @ typ.ptyp_attributes} in
-  match ext with
-  | None -> typ
-  | Some id -> ghtyp(Ptyp_extension (id, PTyp typ))
-
-let mktyp_attrs d attrs =
-  wrap_typ_attrs (mktyp d) attrs
-
-let wrap_pat_attrs pat (ext, attrs) =
-  (* todo: keep exact location for the entire attribute *)
-  let pat = {pat with ppat_attributes = attrs @ pat.ppat_attributes} in
-  match ext with
-  | None -> pat
-  | Some id -> ghpat(Ppat_extension (id, PPat (pat, None)))
-
-let mkpat_attrs d attrs =
-  wrap_pat_attrs (mkpat d) attrs
-
-let wrap_class_type_attrs body attrs =
-  {body with pcty_attributes = attrs @ body.pcty_attributes}
-let wrap_mod_attrs body attrs =
-  {body with pmod_attributes = attrs @ body.pmod_attributes}
-let wrap_mty_attrs body attrs =
-  {body with pmty_attributes = attrs @ body.pmty_attributes}
-
-let wrap_str_ext body ext =
-  match ext with
-  | None -> body
-  | Some id -> ghstr(Pstr_extension ((id, PStr [body]), []))
-
-let mkstr_ext d ext =
-  wrap_str_ext (mkstr d) ext
-
-let wrap_sig_ext body ext =
-  match ext with
-  | None -> body
-  | Some id -> ghsig(Psig_extension ((id, PSig [body]), []))
-
-let mksig_ext d ext =
-  wrap_sig_ext (mksig d) ext
-
-let text_str pos = Str.text (rhs_text pos)
-let text_sig pos = Sig.text (rhs_text pos)
-let text_cstr pos = Cf.text (rhs_text pos)
-let text_csig pos = Ctf.text (rhs_text pos)
-let text_def pos = [Ptop_def (Str.text (rhs_text pos))]
-
-let extra_text text pos items =
-  let pre_extras = rhs_pre_extra_text pos in
-  let post_extras = rhs_post_extra_text pos in
-    text pre_extras @ items @ text post_extras
-
-let extra_str pos items = extra_text Str.text pos items
-let extra_sig pos items = extra_text Sig.text pos items
-let extra_cstr pos items = extra_text Cf.text pos items
-let extra_csig pos items = extra_text Ctf.text pos items
-let extra_def pos items =
-  extra_text (fun txt -> [Ptop_def (Str.text txt)]) pos items
-
-let extra_rhs_core_type ct ~pos =
-  let docs = rhs_info pos in
-  { ct with ptyp_attributes = add_info_attrs docs ct.ptyp_attributes }
-
-type let_binding =
-  { lb_pattern: pattern;
-    lb_expression: expression;
-    lb_attributes: attributes;
-    lb_docs: docs Lazy.t;
-    lb_text: text Lazy.t;
-    lb_loc: Location.t; }
-
-type let_bindings =
-  { lbs_bindings: let_binding list;
-    lbs_rec: rec_flag;
-    lbs_extension: string Asttypes.loc option;
-    lbs_loc: Location.t }
-
-let mklb first (p, e) attrs =
-  { lb_pattern = p;
-    lb_expression = e;
-    lb_attributes = attrs;
-    lb_docs = symbol_docs_lazy ();
-    lb_text = if first then empty_text_lazy
-              else symbol_text_lazy ();
-    lb_loc = symbol_rloc (); }
-
-let mklbs ext rf lb =
-  { lbs_bindings = [lb];
-    lbs_rec = rf;
-    lbs_extension = ext ;
-    lbs_loc = symbol_rloc (); }
-
-let addlb lbs lb =
-  { lbs with lbs_bindings = lb :: lbs.lbs_bindings }
-
-let val_of_let_bindings lbs =
-  let bindings =
-    List.map
-      (fun lb ->
-         Vb.mk ~loc:lb.lb_loc ~attrs:lb.lb_attributes
-           ~docs:(Lazy.force lb.lb_docs)
-           ~text:(Lazy.force lb.lb_text)
-           lb.lb_pattern lb.lb_expression)
-      lbs.lbs_bindings
-  in
-  let str = mkstr(Pstr_value(lbs.lbs_rec, List.rev bindings)) in
-  match lbs.lbs_extension with
-  | None -> str
-  | Some id -> ghstr (Pstr_extension((id, PStr [str]), []))
-
-let expr_of_let_bindings lbs body =
-  let bindings =
-    List.map
-      (fun lb ->
-         Vb.mk ~loc:lb.lb_loc ~attrs:lb.lb_attributes
-           lb.lb_pattern lb.lb_expression)
-      lbs.lbs_bindings
-  in
-    mkexp_attrs (Pexp_let(lbs.lbs_rec, List.rev bindings, body))
-      (lbs.lbs_extension, [])
-
-
-
-(* Alternatively, we could keep the generic module type in the Parsetree
-   and extract the package type during type-checking. In that case,
-   the assertions below should be turned into explicit checks. *)
-let package_type_of_module_type pmty =
-  let err loc s =
-    raise (Syntaxerr.Error (Syntaxerr.Invalid_package_type (loc, s)))
-  in
-  let map_cstr = function
-    | Pwith_type (lid, ptyp) ->
-        let loc = ptyp.ptype_loc in
-        if ptyp.ptype_params <> [] then
-          err loc "parametrized types are not supported";
-        if ptyp.ptype_cstrs <> [] then
-          err loc "constrained types are not supported";
-        if ptyp.ptype_private <> Public then
-          err loc "private types are not supported";
-
-        (* restrictions below are checked by the 'with_constraint' rule *)
-        assert (ptyp.ptype_kind = Ptype_abstract);
-        assert (ptyp.ptype_attributes = []);
-        let ty =
-          match ptyp.ptype_manifest with
-          | Some ty -> ty
-          | None -> assert false
-        in
-        (lid, ty)
-    | _ ->
-        err pmty.pmty_loc "only 'with type t =' constraints are supported"
-  in
-  match pmty with
-  | {pmty_desc = Pmty_ident lid} -> (lid, [])
-  | {pmty_desc = Pmty_with({pmty_desc = Pmty_ident lid}, cstrs)} ->
-      (lid, List.map map_cstr cstrs)
-  | _ ->
-      err pmty.pmty_loc
-        "only module type identifier and 'with type' constraints are supported"
-
-
-# 468 "ml/parser.ml"
-let yytransl_const = [|
-  257 (* AMPERAMPER *);
-  258 (* AMPERSAND *);
-  259 (* AND *);
-  260 (* AS *);
-  261 (* ASSERT *);
-  262 (* BACKQUOTE *);
-  263 (* BANG *);
-  264 (* BAR *);
-  265 (* BARBAR *);
-  266 (* BARRBRACKET *);
-  267 (* BEGIN *);
-  269 (* CLASS *);
-  270 (* COLON *);
-  271 (* COLONCOLON *);
-  272 (* COLONEQUAL *);
-  273 (* COLONGREATER *);
-  274 (* COMMA *);
-  275 (* CONSTRAINT *);
-  276 (* DO *);
-  277 (* DONE *);
-  278 (* DOT *);
-  279 (* DOTDOT *);
-  280 (* DOWNTO *);
-  281 (* ELSE *);
-  282 (* END *);
-    0 (* EOF *);
-  283 (* EQUAL *);
-  284 (* EXCEPTION *);
-  285 (* EXTERNAL *);
-  286 (* FALSE *);
-  288 (* FOR *);
-  289 (* FUN *);
-  290 (* FUNCTION *);
-  291 (* FUNCTOR *);
-  292 (* GREATER *);
-  293 (* GREATERRBRACE *);
-  294 (* GREATERRBRACKET *);
-  295 (* IF *);
-  296 (* IN *);
-  297 (* INCLUDE *);
-  304 (* INHERIT *);
-  305 (* INITIALIZER *);
-  308 (* LAZY *);
-  309 (* LBRACE *);
-  310 (* LBRACELESS *);
-  311 (* LBRACKET *);
-  312 (* LBRACKETBAR *);
-  313 (* LBRACKETLESS *);
-  314 (* LBRACKETGREATER *);
-  315 (* LBRACKETPERCENT *);
-  316 (* LBRACKETPERCENTPERCENT *);
-  317 (* LESS *);
-  318 (* LESSMINUS *);
-  319 (* LET *);
-  321 (* LPAREN *);
-  322 (* LBRACKETAT *);
-  323 (* LBRACKETATAT *);
-  324 (* LBRACKETATATAT *);
-  325 (* MATCH *);
-  326 (* METHOD *);
-  327 (* MINUS *);
-  328 (* MINUSDOT *);
-  329 (* MINUSGREATER *);
-  330 (* MODULE *);
-  331 (* MUTABLE *);
-  332 (* NEW *);
-  333 (* NONREC *);
-  334 (* OBJECT *);
-  335 (* OF *);
-  336 (* OPEN *);
-  338 (* OR *);
-  339 (* PERCENT *);
-  340 (* PLUS *);
-  341 (* PLUSDOT *);
-  342 (* PLUSEQ *);
-  344 (* PRIVATE *);
-  345 (* QUESTION *);
-  346 (* QUOTE *);
-  347 (* RBRACE *);
-  348 (* RBRACKET *);
-  349 (* REC *);
-  350 (* RPAREN *);
-  351 (* SEMI *);
-  352 (* SEMISEMI *);
-  353 (* HASH *);
-  355 (* SIG *);
-  356 (* STAR *);
-  358 (* STRUCT *);
-  359 (* THEN *);
-  360 (* TILDE *);
-  361 (* TO *);
-  362 (* TRUE *);
-  363 (* TRY *);
-  364 (* TYPE *);
-  366 (* UNDERSCORE *);
-  367 (* VAL *);
-  368 (* VIRTUAL *);
-  369 (* WHEN *);
-  370 (* WHILE *);
-  371 (* WITH *);
-  374 (* EOL *);
-    0|]
-
-let yytransl_block = [|
-  268 (* CHAR *);
-  287 (* FLOAT *);
-  298 (* INFIXOP0 *);
-  299 (* INFIXOP1 *);
-  300 (* INFIXOP2 *);
-  301 (* INFIXOP3 *);
-  302 (* INFIXOP4 *);
-  303 (* DOTOP *);
-  306 (* INT *);
-  307 (* LABEL *);
-  320 (* LIDENT *);
-  337 (* OPTLABEL *);
-  343 (* PREFIXOP *);
-  354 (* HASHOP *);
-  357 (* STRING *);
-  365 (* UIDENT *);
-  372 (* COMMENT *);
-  373 (* DOCSTRING *);
-    0|]
-
-let yylhs = "\255\255\
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-
-let yylen = "\002\000\
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-\000\000\000\000\000\000\178\007\118\055\000\000\000\000\000\000\
-\176\055\176\055\000\000\000\000\000\000\000\000\000\000\000\000\
-\000\000\051\005\000\000\000\000\229\048\013\255\000\000\000\000\
-\000\000\000\000\000\000\176\003\000\000\000\000\000\000\000\000\
-\000\000\000\000\000\000\031\049\176\055\000\000\000\000\000\000\
-\000\000\000\000\097\059\246\006\030\002\141\003\022\007\000\000\
-\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-\141\006\170\006\000\000\000\000\000\000\000\000\000\000\000\000\
-\210\007\000\000\000\000\000\000\000\000\000\000\243\005\147\053\
-\022\007\022\007\211\007\214\007\000\000\215\007\178\007\000\000\
-\022\007\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
-\000\000\000\000\000\000\000\000\000\000\000\000\000\000\228\255\
-\000\000\022\007\000\000\000\000\000\000\255\001\194\004"
-
-let yygindex = "\000\000\
-\000\000\000\000\000\000\000\000\000\000\000\000\000\000\023\000\
-\184\255\000\000\075\000\179\002\184\003\137\008\048\000\000\000\
-\182\255\017\000\185\004\077\253\000\000\159\254\176\005\071\255\
-\071\009\096\012\018\254\152\005\251\255\099\014\085\252\012\000\
-\178\000\016\000\018\000\019\000\000\000\000\000\000\000\000\000\
-\035\000\037\000\041\000\000\000\255\255\001\000\225\006\150\000\
-\000\000\000\000\000\000\000\000\000\000\000\000\042\000\000\000\
-\000\000\000\000\000\000\000\000\250\254\005\252\000\000\000\000\
-\000\000\002\000\114\253\000\000\000\000\000\000\000\000\000\000\
-\000\000\000\000\253\002\053\000\057\251\055\255\027\253\185\251\
-\006\253\126\252\016\251\104\251\163\251\214\251\104\003\000\000\
-\000\000\000\000\000\000\000\000\000\000\038\254\000\000\000\000\
-\000\000\000\000\000\000\027\000\064\255\049\006\099\005\025\005\
-\000\000\000\000\062\255\051\001\000\000\000\000\169\255\117\252\
-\057\253\186\006\229\008\101\011\000\000\000\000\000\000\113\255\
-\158\007\183\011\224\006\013\000\065\255\133\003\152\007\000\000\
-\187\007\211\006\018\011\130\253\000\000\106\255\000\000\000\000\
-\000\000\215\003\126\005\133\255\118\001\000\000\000\000\000\000\
-\000\000\206\000\000\000\085\007\142\255\091\007\133\006\152\008\
-\000\000\000\000\097\004\000\000\000\000\203\007\195\253\053\005\
-\144\251\047\251\215\251\242\252\000\000\221\252\000\000\139\004\
-\000\000\000\000\062\251\068\255\012\253\107\006\147\007\000\000\
-\000\000\014\004\000\000\000\000\030\004\004\253\000\000\236\003\
-\151\004\000\000\128\253\138\254\146\255\000\000\114\005\102\254\
-\134\255\171\254\131\255\000\000\000\000\000\000\000\000\000\000\
-\000\000\000\000\000\000\049\255\000\000"
-
-let yytablesize = 20395
-let yytable = "\147\000\
-\105\000\172\000\106\000\249\001\010\002\248\001\239\001\155\001\
-\128\002\153\001\154\001\189\000\164\001\031\002\213\002\001\002\
-\193\001\099\000\252\002\100\000\101\000\146\000\129\001\055\000\
-\116\003\021\002\114\003\022\002\173\001\124\002\203\003\172\002\
-\195\003\072\003\133\001\242\003\102\000\097\004\103\000\187\001\
-\178\003\219\000\104\000\109\000\144\004\106\004\218\004\159\001\
-\027\004\198\004\124\000\130\000\212\001\147\001\051\000\149\001\
-\100\005\017\001\179\001\096\005\022\005\052\001\070\005\088\000\
-\169\002\028\002\183\003\060\001\070\001\100\003\154\003\151\002\
-\114\001\152\002\143\005\103\005\248\002\121\000\145\004\212\000\
-\036\004\107\001\210\000\045\004\183\000\143\004\248\002\248\002\
-\163\000\240\001\248\002\120\001\020\005\105\000\046\005\106\000\
-\217\001\147\002\046\004\114\001\045\002\159\004\111\001\248\002\
-\042\002\105\000\112\001\106\000\149\001\211\000\099\000\252\001\
-\100\000\101\000\037\004\010\003\112\001\031\004\120\001\138\001\
-\119\002\012\002\099\000\240\004\100\000\101\000\117\005\147\000\
-\057\005\102\000\147\000\103\000\147\000\147\000\074\003\104\000\
-\109\000\178\002\190\001\111\001\215\002\102\000\175\001\103\000\
-\030\000\186\005\027\001\104\000\109\000\187\000\120\002\159\005\
-\188\001\211\004\043\002\172\000\172\000\107\005\172\000\121\002\
-\071\004\103\005\183\003\114\001\181\001\190\001\114\001\114\001\
-\172\000\172\000\102\003\124\000\107\001\146\001\181\001\130\000\
-\107\001\130\000\062\000\234\001\062\000\062\000\120\001\183\000\
-\122\002\093\005\120\001\010\004\163\001\183\000\090\003\172\000\
-\172\000\118\002\123\002\004\002\090\003\111\001\112\001\227\005\
-\144\001\112\001\213\001\126\005\235\001\110\001\214\001\011\003\
-\213\005\224\001\225\001\032\004\013\002\215\001\236\001\050\004\
-\216\001\241\004\004\004\216\002\103\002\046\005\062\000\136\003\
-\014\004\047\001\183\000\168\000\179\002\190\001\014\004\113\001\
-\091\003\190\001\071\001\052\004\127\003\249\005\091\003\096\003\
-\189\001\113\001\110\001\188\001\220\004\062\005\168\000\188\001\
-\044\002\244\004\121\005\174\002\246\004\168\000\072\004\237\001\
-\181\001\128\002\238\001\181\001\113\004\182\002\106\001\183\002\
-\183\000\252\002\183\000\189\001\051\003\010\000\184\004\179\003\
-\201\002\020\006\103\005\168\000\156\005\109\002\087\003\183\001\
-\121\005\052\003\153\001\184\000\012\004\162\005\180\005\168\000\
-\067\002\153\001\098\003\153\001\046\005\096\002\168\000\168\000\
-\128\002\168\000\164\001\164\001\110\001\071\001\112\002\062\000\
-\226\002\071\001\252\002\071\001\128\003\249\001\051\000\180\003\
-\005\004\165\002\158\002\137\003\163\005\190\000\015\004\088\000\
-\109\003\079\005\081\005\113\001\076\004\140\002\113\001\142\002\
-\125\004\143\002\171\002\189\001\205\000\229\005\060\002\189\001\
-\051\000\012\004\168\000\063\005\186\003\207\002\050\002\041\006\
-\185\004\088\000\046\005\228\005\059\002\156\001\059\001\252\003\
-\021\003\106\001\187\003\205\004\213\001\106\001\110\002\050\002\
-\214\001\115\005\113\004\058\003\149\001\033\003\116\001\215\001\
-\149\001\106\002\216\001\109\002\149\001\024\006\149\001\026\006\
-\013\004\125\002\149\001\149\001\183\000\213\001\149\001\105\003\
-\046\005\214\001\116\001\096\002\121\001\122\001\104\002\149\001\
-\215\001\116\001\027\003\216\001\112\002\191\005\224\003\168\004\
-\147\000\005\005\051\000\102\002\027\004\250\002\183\000\147\000\
-\194\000\147\000\225\004\088\000\187\001\225\003\226\003\057\001\
-\147\000\147\000\183\000\147\000\046\005\111\002\138\005\006\005\
-\169\002\184\002\243\005\103\001\183\001\075\004\149\001\147\000\
-\128\002\158\001\188\003\147\000\050\002\149\001\211\005\172\000\
-\172\000\207\004\253\003\183\000\234\001\234\001\169\002\130\000\
-\062\000\130\000\062\000\130\000\110\002\222\003\027\003\149\001\
-\149\001\116\001\149\001\149\001\116\001\116\001\014\003\106\002\
-\172\000\172\000\172\000\106\003\212\005\235\001\235\001\169\002\
-\172\000\094\004\163\001\163\001\185\002\149\001\063\004\236\001\
-\236\001\169\002\105\001\128\002\104\002\062\000\185\002\194\004\
-\199\005\128\002\193\003\169\004\228\001\172\000\172\000\149\004\
-\252\002\102\002\172\000\126\001\071\001\182\001\172\000\187\001\
-\035\004\004\002\184\001\187\001\005\002\079\002\043\004\182\001\
-\246\003\073\001\147\000\147\000\065\001\184\002\103\001\183\001\
-\237\001\237\001\169\002\238\001\238\001\169\002\069\004\105\003\
-\184\002\147\000\172\000\142\002\247\003\105\000\183\000\106\000\
-\002\003\004\003\153\001\172\000\104\005\090\003\229\001\115\001\
-\076\005\004\002\248\002\065\002\193\001\217\002\099\000\015\003\
-\100\000\101\000\095\004\110\003\172\000\249\001\122\003\142\002\
-\037\003\105\003\105\003\123\003\124\003\018\003\148\005\230\001\
-\185\002\102\000\115\001\103\000\142\005\105\001\248\002\104\000\
-\109\000\071\001\104\003\071\001\128\002\071\001\212\000\091\003\
-\248\002\073\001\060\005\190\000\063\003\065\003\142\002\202\003\
-\142\002\182\001\038\002\160\002\182\001\184\001\249\001\172\000\
-\204\003\115\004\191\003\248\002\142\002\157\003\070\004\165\002\
-\059\001\128\002\248\002\111\003\128\002\160\004\219\002\060\003\
-\006\006\113\001\114\001\184\002\161\005\065\002\223\003\065\002\
-\171\005\175\003\125\002\212\000\070\003\251\005\248\002\169\005\
-\248\002\146\004\115\001\007\002\160\002\115\001\115\001\000\004\
-\187\000\001\004\211\000\149\005\248\002\112\003\054\004\040\002\
-\013\000\248\002\150\001\183\000\248\002\184\001\248\002\194\005\
-\147\000\062\000\252\005\147\000\183\000\008\002\169\005\058\004\
-\009\002\125\002\147\000\018\000\147\000\147\000\031\000\161\002\
-\107\002\108\002\205\005\198\000\112\002\184\000\035\000\116\001\
-\253\005\216\003\147\000\129\003\066\002\188\000\024\000\172\000\
-\120\003\161\004\217\005\128\002\147\000\122\000\129\000\248\002\
-\156\000\240\003\128\002\245\004\130\000\252\002\172\000\172\000\
-\131\003\156\001\245\003\165\000\125\000\068\004\178\005\116\003\
-\196\004\114\003\142\003\217\005\218\003\176\001\128\002\201\004\
-\166\000\254\005\185\001\147\000\050\001\147\000\195\000\125\000\
-\008\006\241\003\147\000\059\004\250\002\183\000\125\000\172\000\
-\199\000\046\000\133\002\154\004\156\004\041\002\198\000\147\000\
-\172\000\196\000\172\000\051\004\062\000\153\001\028\003\066\001\
-\166\003\048\004\097\001\126\001\004\002\125\000\066\002\126\001\
-\066\002\217\003\050\000\126\001\252\002\126\001\167\000\059\004\
-\125\000\126\001\065\004\004\006\005\006\188\005\061\004\190\005\
-\125\000\249\001\125\000\204\003\252\002\123\001\126\001\189\003\
-\034\004\167\000\234\001\172\000\133\002\133\002\185\002\098\001\
-\167\000\195\000\213\001\183\000\059\004\017\000\214\001\128\002\
-\215\001\125\002\004\002\199\000\186\002\215\001\133\002\203\004\
-\216\001\011\004\028\003\235\001\196\000\236\003\167\000\237\003\
-\145\001\072\001\147\000\125\000\252\004\236\001\160\003\253\004\
-\100\001\221\001\167\000\120\001\126\001\229\001\071\001\188\002\
-\161\003\167\000\167\000\252\002\167\000\048\005\128\002\050\006\
-\249\003\172\004\107\005\078\005\138\005\221\001\126\001\126\001\
-\128\002\126\001\126\001\183\000\125\002\217\002\230\001\105\000\
-\183\000\106\000\125\002\049\005\248\002\248\002\237\001\041\004\
-\071\005\238\001\218\002\147\000\126\001\056\005\147\000\183\000\
-\099\000\047\000\100\000\101\000\050\000\167\000\119\002\147\000\
-\205\000\132\004\057\004\232\001\187\002\248\002\128\002\128\002\
-\147\000\134\005\253\001\102\000\000\003\103\000\172\000\163\000\
-\240\001\104\000\109\000\006\003\135\005\066\001\030\000\066\001\
-\113\001\114\001\150\001\187\000\120\002\248\002\150\001\099\002\
-\250\002\100\002\150\001\151\001\150\001\121\002\219\002\248\002\
-\150\001\150\001\191\001\101\002\150\001\250\002\128\002\249\001\
-\071\005\160\000\183\000\196\002\162\000\150\001\250\002\232\003\
-\073\004\250\002\062\000\196\003\213\001\197\002\122\002\172\000\
-\214\001\163\000\240\001\250\002\186\001\125\002\235\004\215\001\
-\123\002\147\000\216\001\221\003\132\005\133\005\250\005\228\003\
-\143\000\147\000\182\001\172\000\048\005\233\003\172\000\050\000\
-\172\000\172\000\172\000\124\001\150\001\147\000\172\000\118\004\
-\031\000\210\004\125\002\150\001\172\000\125\002\250\002\002\003\
-\035\000\067\002\234\003\251\004\250\002\219\004\009\004\250\002\
-\147\000\217\002\107\001\141\004\254\001\150\001\150\001\046\002\
-\150\001\150\001\183\000\172\000\254\002\183\001\168\005\054\002\
-\248\002\175\002\058\002\084\001\085\001\229\001\151\004\165\004\
-\180\002\248\002\120\001\150\001\030\000\004\002\123\004\093\000\
-\169\002\106\001\255\001\235\003\050\005\217\002\074\004\105\005\
-\102\001\180\002\079\003\048\005\250\002\123\001\230\001\169\002\
-\091\002\123\001\216\005\183\000\094\002\123\001\169\002\123\001\
-\191\001\090\001\090\003\123\001\123\001\128\002\215\001\250\002\
-\132\001\216\001\219\002\180\002\125\002\249\001\250\002\000\002\
-\123\001\248\002\095\001\125\002\176\001\169\002\050\000\169\002\
-\247\002\141\001\053\005\039\003\147\000\080\005\254\001\066\001\
-\148\001\169\002\147\000\071\005\208\004\250\002\016\002\125\002\
-\040\003\048\005\012\003\040\006\091\003\050\000\219\002\134\001\
-\250\002\097\005\104\001\134\001\013\003\250\002\030\000\123\001\
-\250\002\183\000\250\002\147\000\255\001\134\001\123\001\108\005\
-\119\002\191\001\114\005\151\001\172\000\147\000\134\001\094\005\
-\211\002\147\000\169\002\017\002\211\000\169\002\041\003\048\005\
-\123\001\123\001\004\002\123\001\123\001\021\005\131\001\030\006\
-\030\000\190\003\094\003\226\004\179\005\187\000\120\002\230\004\
-\167\002\000\002\212\002\250\002\139\005\119\002\123\001\121\002\
-\050\000\096\003\247\002\134\001\095\005\134\001\050\000\133\003\
-\143\000\216\004\155\001\048\005\153\001\154\001\097\003\004\002\
-\125\002\249\001\147\000\204\003\031\006\030\000\125\003\071\005\
-\122\002\071\005\187\000\120\002\147\000\183\001\171\002\140\002\
-\250\002\183\000\123\002\136\001\121\002\168\002\254\001\155\001\
-\254\004\122\005\154\001\163\000\240\001\140\002\167\005\016\002\
-\140\002\180\002\012\005\180\002\098\003\091\002\043\005\125\002\
-\004\002\243\001\140\002\036\005\180\002\122\002\030\000\170\000\
-\254\003\125\002\016\002\067\002\255\001\147\000\119\002\123\002\
-\208\001\016\002\016\002\124\001\248\002\192\005\091\002\124\001\
-\151\001\069\005\045\003\124\001\236\001\124\001\209\005\248\002\
-\067\002\124\001\249\001\209\001\204\003\124\001\030\000\016\002\
-\016\002\180\002\172\000\187\000\120\002\255\003\124\001\125\002\
-\125\002\000\002\131\005\016\002\046\003\121\002\236\001\147\000\
-\050\000\121\003\016\002\016\002\069\003\016\002\228\002\229\002\
-\130\003\139\001\140\002\061\002\248\002\143\000\140\002\093\000\
-\091\002\091\002\147\000\147\000\147\000\083\005\122\002\183\000\
-\066\001\184\002\091\005\093\004\093\000\124\001\090\003\125\002\
-\123\002\069\005\091\002\212\001\124\001\183\001\077\003\078\003\
-\254\002\093\000\099\005\093\000\093\000\212\001\016\002\147\000\
-\244\003\140\001\092\005\147\000\230\002\067\002\124\001\124\001\
-\093\000\124\001\124\001\063\002\176\001\221\001\184\002\054\002\
-\176\001\145\005\183\000\187\000\176\001\043\005\176\001\221\001\
-\091\003\063\002\176\001\093\000\124\001\147\000\176\001\127\003\
-\212\001\221\001\147\000\093\000\210\001\066\001\213\001\176\001\
-\141\002\093\000\214\001\221\001\147\000\143\000\172\000\093\000\
-\156\001\215\001\147\000\169\001\216\001\151\002\180\002\211\001\
-\187\005\196\001\196\001\093\000\183\001\225\002\246\002\093\000\
-\040\004\213\001\151\005\147\000\174\001\214\001\220\001\221\001\
-\154\005\063\002\183\001\093\000\215\001\183\000\093\000\216\001\
-\063\002\246\002\181\001\116\004\090\003\176\001\147\000\175\001\
-\246\002\165\005\250\002\196\005\043\005\242\001\148\003\149\003\
-\147\000\180\002\147\000\063\002\183\000\168\002\188\001\176\001\
-\176\001\087\005\176\001\176\001\068\005\117\004\125\002\246\002\
-\185\002\157\005\250\002\167\003\160\005\250\002\008\003\172\000\
-\250\002\180\002\246\002\180\002\248\002\176\001\091\003\183\000\
-\185\000\177\003\246\002\185\000\246\002\219\001\185\000\185\000\
-\168\002\222\001\185\000\185\000\185\000\185\000\185\000\147\000\
-\185\000\180\002\043\005\147\000\248\002\185\002\249\004\185\000\
-\251\002\143\000\248\002\185\000\191\004\250\002\185\000\185\000\
-\175\002\166\000\250\002\061\003\250\002\223\005\147\000\185\000\
-\185\000\180\002\134\002\185\000\185\000\246\002\223\001\202\005\
-\203\005\147\000\206\005\207\005\166\000\224\005\192\004\183\000\
-\043\005\150\003\183\000\166\000\236\005\183\000\135\002\248\002\
-\255\005\090\003\000\006\147\000\147\000\183\000\248\002\244\005\
-\184\000\147\000\147\000\250\003\163\000\240\001\088\005\225\005\
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-
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-let yynames_block = "\
-  CHAR\000\
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-  COMMENT\000\
-  DOCSTRING\000\
-  "
-
-let yyact = [|
-  (fun _ -> failwith "parser")
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'structure) in
-    Obj.repr(
-# 574 "ml/parser.mly"
-                                         ( extra_str 1 _1 )
-# 6690 "ml/parser.ml"
-               : Parsetree.structure))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'signature) in
-    Obj.repr(
-# 577 "ml/parser.mly"
-                                         ( extra_sig 1 _1 )
-# 6697 "ml/parser.ml"
-               : Parsetree.signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'top_structure) in
-    Obj.repr(
-# 580 "ml/parser.mly"
-                                         ( Ptop_def (extra_str 1 _1) )
-# 6704 "ml/parser.ml"
-               : Parsetree.toplevel_phrase))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'toplevel_directive) in
-    Obj.repr(
-# 581 "ml/parser.mly"
-                                         ( _1 )
-# 6711 "ml/parser.ml"
-               : Parsetree.toplevel_phrase))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 582 "ml/parser.mly"
-                                         ( raise End_of_file )
-# 6717 "ml/parser.ml"
-               : Parsetree.toplevel_phrase))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 586 "ml/parser.mly"
-      ( (text_str 1) @ [mkstrexp _1 _2] )
-# 6725 "ml/parser.ml"
-               : 'top_structure))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'top_structure_tail) in
-    Obj.repr(
-# 588 "ml/parser.mly"
-      ( _1 )
-# 6732 "ml/parser.ml"
-               : 'top_structure))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 591 "ml/parser.mly"
-                                         ( [] )
-# 6738 "ml/parser.ml"
-               : 'top_structure_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'structure_item) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'top_structure_tail) in
-    Obj.repr(
-# 592 "ml/parser.mly"
-                                         ( (text_str 1) @ _1 :: _2 )
-# 6746 "ml/parser.ml"
-               : 'top_structure_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_body) in
-    Obj.repr(
-# 595 "ml/parser.mly"
-                                         ( extra_def 1 _1 )
-# 6753 "ml/parser.ml"
-               : Parsetree.toplevel_phrase list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 598 "ml/parser.mly"
-                                         ( _1 )
-# 6760 "ml/parser.ml"
-               : 'use_file_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'post_item_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 600 "ml/parser.mly"
-      ( (text_def 1) @ Ptop_def[mkstrexp _1 _2] :: _3 )
-# 6769 "ml/parser.ml"
-               : 'use_file_body))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 604 "ml/parser.mly"
-      ( [] )
-# 6775 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 606 "ml/parser.mly"
-      ( text_def 1 )
-# 6781 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'post_item_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 608 "ml/parser.mly"
-      (  mark_rhs_docs 2 3;
-        (text_def 1) @ (text_def 2) @ Ptop_def[mkstrexp _2 _3] :: _4 )
-# 6791 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'structure_item) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 611 "ml/parser.mly"
-      ( (text_def 1) @ (text_def 2) @ Ptop_def[_2] :: _3 )
-# 6799 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'toplevel_directive) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 613 "ml/parser.mly"
-      (  mark_rhs_docs 2 3;
-        (text_def 1) @ (text_def 2) @ _2 :: _3 )
-# 6808 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'structure_item) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 616 "ml/parser.mly"
-      ( (text_def 1) @ Ptop_def[_1] :: _2 )
-# 6816 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'toplevel_directive) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'use_file_tail) in
-    Obj.repr(
-# 618 "ml/parser.mly"
-      ( mark_rhs_docs 1 1;
-        (text_def 1) @ _1 :: _2 )
-# 6825 "ml/parser.ml"
-               : 'use_file_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    Obj.repr(
-# 622 "ml/parser.mly"
-                  ( _1 )
-# 6832 "ml/parser.ml"
-               : Parsetree.core_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 625 "ml/parser.mly"
-                 ( _1 )
-# 6839 "ml/parser.ml"
-               : Parsetree.expression))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 628 "ml/parser.mly"
-                ( _1 )
-# 6846 "ml/parser.ml"
-               : Parsetree.pattern))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 635 "ml/parser.mly"
-      ( mkrhs "*" 2, None )
-# 6852 "ml/parser.ml"
-               : 'functor_arg))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'functor_arg_name) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    Obj.repr(
-# 637 "ml/parser.mly"
-      ( mkrhs _2 2, Some _4 )
-# 6860 "ml/parser.ml"
-               : 'functor_arg))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 641 "ml/parser.mly"
-               ( _1 )
-# 6867 "ml/parser.ml"
-               : 'functor_arg_name))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 642 "ml/parser.mly"
-               ( "_" )
-# 6873 "ml/parser.ml"
-               : 'functor_arg_name))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'functor_args) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'functor_arg) in
-    Obj.repr(
-# 647 "ml/parser.mly"
-      ( _2 :: _1 )
-# 6881 "ml/parser.ml"
-               : 'functor_args))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'functor_arg) in
-    Obj.repr(
-# 649 "ml/parser.mly"
-      ( [ _1 ] )
-# 6888 "ml/parser.ml"
-               : 'functor_args))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'mod_longident) in
-    Obj.repr(
-# 654 "ml/parser.mly"
-      ( mkmod(Pmod_ident (mkrhs _1 1)) )
-# 6895 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'structure) in
-    Obj.repr(
-# 656 "ml/parser.mly"
-      ( mkmod ~attrs:_2 (Pmod_structure(extra_str 3 _3)) )
-# 6903 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'structure) in
-    Obj.repr(
-# 658 "ml/parser.mly"
-      ( unclosed "struct" 1 "end" 4 )
-# 6911 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'functor_args) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'module_expr) in
-    Obj.repr(
-# 660 "ml/parser.mly"
-      ( let modexp =
-          List.fold_left
-            (fun acc (n, t) -> mkmod(Pmod_functor(n, t, acc)))
-            _5 _3
-        in wrap_mod_attrs modexp _2 )
-# 6924 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'paren_module_expr) in
-    Obj.repr(
-# 666 "ml/parser.mly"
-      ( mkmod(Pmod_apply(_1, _2)) )
-# 6932 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'module_expr) in
-    Obj.repr(
-# 668 "ml/parser.mly"
-      ( mkmod(Pmod_apply(_1, mkmod (Pmod_structure []))) )
-# 6939 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'paren_module_expr) in
-    Obj.repr(
-# 670 "ml/parser.mly"
-      ( _1 )
-# 6946 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 672 "ml/parser.mly"
-      ( Mod.attr _1 _2 )
-# 6954 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 674 "ml/parser.mly"
-      ( mkmod(Pmod_extension _1) )
-# 6961 "ml/parser.ml"
-               : 'module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'module_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    Obj.repr(
-# 679 "ml/parser.mly"
-      ( mkmod(Pmod_constraint(_2, _4)) )
-# 6969 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'module_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    Obj.repr(
-# 681 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 5 )
-# 6977 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    Obj.repr(
-# 683 "ml/parser.mly"
-      ( _2 )
-# 6984 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    Obj.repr(
-# 685 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 3 )
-# 6991 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 687 "ml/parser.mly"
-      ( mkmod ~attrs:_3 (Pmod_unpack _4))
-# 6999 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 689 "ml/parser.mly"
-      ( mkmod ~attrs:_3
-          (Pmod_unpack(
-               ghexp(Pexp_constraint(_4, ghtyp(Ptyp_package _6))))) )
-# 7010 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : 'expr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : 'package_type) in
-    let _8 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 694 "ml/parser.mly"
-      ( mkmod ~attrs:_3
-          (Pmod_unpack(
-               ghexp(Pexp_coerce(_4, Some(ghtyp(Ptyp_package _6)),
-                                 ghtyp(Ptyp_package _8))))) )
-# 7023 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 699 "ml/parser.mly"
-      ( mkmod ~attrs:_3
-          (Pmod_unpack(
-               ghexp(Pexp_coerce(_4, None, ghtyp(Ptyp_package _6))))) )
-# 7034 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    Obj.repr(
-# 703 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 6 )
-# 7042 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    Obj.repr(
-# 705 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 6 )
-# 7050 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 707 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 5 )
-# 7058 "ml/parser.ml"
-               : 'paren_module_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'post_item_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'structure_tail) in
-    Obj.repr(
-# 712 "ml/parser.mly"
-      ( mark_rhs_docs 1 2;
-        (text_str 1) @ mkstrexp _1 _2 :: _3 )
-# 7068 "ml/parser.ml"
-               : 'structure))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'structure_tail) in
-    Obj.repr(
-# 714 "ml/parser.mly"
-                   ( _1 )
-# 7075 "ml/parser.ml"
-               : 'structure))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 717 "ml/parser.mly"
-                         ( [] )
-# 7081 "ml/parser.ml"
-               : 'structure_tail))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'structure) in
-    Obj.repr(
-# 718 "ml/parser.mly"
-                         ( (text_str 1) @ _2 )
-# 7088 "ml/parser.ml"
-               : 'structure_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'structure_item) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'structure_tail) in
-    Obj.repr(
-# 719 "ml/parser.mly"
-                                  ( (text_str 1) @ _1 :: _2 )
-# 7096 "ml/parser.ml"
-               : 'structure_tail))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'let_bindings) in
-    Obj.repr(
-# 723 "ml/parser.mly"
-      ( val_of_let_bindings _1 )
-# 7103 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'primitive_declaration) in
-    Obj.repr(
-# 725 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_primitive body) ext )
-# 7110 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'value_description) in
-    Obj.repr(
-# 727 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_primitive body) ext )
-# 7117 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_declarations) in
-    Obj.repr(
-# 729 "ml/parser.mly"
-      ( let (nr, l, ext ) = _1 in mkstr_ext (Pstr_type (nr, List.rev l)) ext )
-# 7124 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'str_type_extension) in
-    Obj.repr(
-# 731 "ml/parser.mly"
-      ( let (l, ext) = _1 in mkstr_ext (Pstr_typext l) ext )
-# 7131 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'str_exception_declaration) in
-    Obj.repr(
-# 733 "ml/parser.mly"
-      ( let (l, ext) = _1 in mkstr_ext (Pstr_exception l) ext )
-# 7138 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_binding) in
-    Obj.repr(
-# 735 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_module body) ext )
-# 7145 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'rec_module_bindings) in
-    Obj.repr(
-# 737 "ml/parser.mly"
-      ( let (l, ext) = _1 in mkstr_ext (Pstr_recmodule(List.rev l)) ext )
-# 7152 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_type_declaration) in
-    Obj.repr(
-# 739 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_modtype body) ext )
-# 7159 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'open_statement) in
-    Obj.repr(
-# 741 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_open body) ext )
-# 7166 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_type_declarations) in
-    Obj.repr(
-# 743 "ml/parser.mly"
-      ( let (l, ext) = _1 in mkstr_ext (Pstr_class_type (List.rev l)) ext )
-# 7173 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'str_include_statement) in
-    Obj.repr(
-# 745 "ml/parser.mly"
-      ( let (body, ext) = _1 in mkstr_ext (Pstr_include body) ext )
-# 7180 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'item_extension) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 747 "ml/parser.mly"
-      ( mkstr(Pstr_extension (_1, (add_docs_attrs (symbol_docs ()) _2))) )
-# 7188 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'floating_attribute) in
-    Obj.repr(
-# 749 "ml/parser.mly"
-      ( mark_symbol_docs ();
-        mkstr(Pstr_attribute _1) )
-# 7196 "ml/parser.ml"
-               : 'structure_item))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 754 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Incl.mk _3 ~attrs:(attrs@_4)
-            ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext )
-# 7208 "ml/parser.ml"
-               : 'str_include_statement))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'module_expr) in
-    Obj.repr(
-# 761 "ml/parser.mly"
-      ( _2 )
-# 7215 "ml/parser.ml"
-               : 'module_binding_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'module_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'module_expr) in
-    Obj.repr(
-# 763 "ml/parser.mly"
-      ( mkmod(Pmod_constraint(_4, _2)) )
-# 7223 "ml/parser.ml"
-               : 'module_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'functor_arg) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'module_binding_body) in
-    Obj.repr(
-# 765 "ml/parser.mly"
-      ( mkmod(Pmod_functor(fst _1, snd _1, _2)) )
-# 7231 "ml/parser.ml"
-               : 'module_binding_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_binding_body) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 769 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Mb.mk (mkrhs _3 3) _4 ~attrs:(attrs@_5)
-            ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-      , ext )
-# 7244 "ml/parser.ml"
-               : 'module_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'rec_module_binding) in
-    Obj.repr(
-# 775 "ml/parser.mly"
-                                           ( let (b, ext) = _1 in ([b], ext) )
-# 7251 "ml/parser.ml"
-               : 'rec_module_bindings))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'rec_module_bindings) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_module_binding) in
-    Obj.repr(
-# 777 "ml/parser.mly"
-      ( let (l, ext) = _1 in (_2 :: l, ext) )
-# 7259 "ml/parser.ml"
-               : 'rec_module_bindings))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'module_binding_body) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 781 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Mb.mk (mkrhs _4 4) _5 ~attrs:(attrs@_6)
-            ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-      , ext )
-# 7272 "ml/parser.ml"
-               : 'rec_module_binding))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_binding_body) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 788 "ml/parser.mly"
-      ( Mb.mk (mkrhs _3 3) _4 ~attrs:(_2@_5) ~loc:(symbol_rloc ())
-               ~text:(symbol_text ()) ~docs:(symbol_docs ()) )
-# 7283 "ml/parser.ml"
-               : 'and_module_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'mty_longident) in
-    Obj.repr(
-# 796 "ml/parser.mly"
-      ( mkmty(Pmty_ident (mkrhs _1 1)) )
-# 7290 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'signature) in
-    Obj.repr(
-# 798 "ml/parser.mly"
-      ( mkmty ~attrs:_2 (Pmty_signature (extra_sig 3 _3)) )
-# 7298 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'signature) in
-    Obj.repr(
-# 800 "ml/parser.mly"
-      ( unclosed "sig" 1 "end" 4 )
-# 7306 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'functor_args) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'module_type) in
-    Obj.repr(
-# 803 "ml/parser.mly"
-      ( let mty =
-          List.fold_left
-            (fun acc (n, t) -> mkmty(Pmty_functor(n, t, acc)))
-            _5 _3
-        in wrap_mty_attrs mty _2 )
-# 7319 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'module_type) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'module_type) in
-    Obj.repr(
-# 810 "ml/parser.mly"
-      ( mkmty(Pmty_functor(mknoloc "_", Some _1, _3)) )
-# 7327 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'module_type) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'with_constraints) in
-    Obj.repr(
-# 812 "ml/parser.mly"
-      ( mkmty(Pmty_with(_1, List.rev _3)) )
-# 7335 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'module_expr) in
-    Obj.repr(
-# 814 "ml/parser.mly"
-      ( mkmty ~attrs:_4 (Pmty_typeof _5) )
-# 7343 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    Obj.repr(
-# 818 "ml/parser.mly"
-      ( _2 )
-# 7350 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    Obj.repr(
-# 820 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 3 )
-# 7357 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 822 "ml/parser.mly"
-      ( mkmty(Pmty_extension _1) )
-# 7364 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 824 "ml/parser.mly"
-      ( Mty.attr _1 _2 )
-# 7372 "ml/parser.ml"
-               : 'module_type))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 827 "ml/parser.mly"
-                         ( [] )
-# 7378 "ml/parser.ml"
-               : 'signature))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'signature) in
-    Obj.repr(
-# 828 "ml/parser.mly"
-                         ( (text_sig 1) @ _2 )
-# 7385 "ml/parser.ml"
-               : 'signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'signature_item) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'signature) in
-    Obj.repr(
-# 829 "ml/parser.mly"
-                             ( (text_sig 1) @ _1 :: _2 )
-# 7393 "ml/parser.ml"
-               : 'signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'value_description) in
-    Obj.repr(
-# 833 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_value body) ext )
-# 7400 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'primitive_declaration) in
-    Obj.repr(
-# 835 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_value body) ext)
-# 7407 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_declarations) in
-    Obj.repr(
-# 837 "ml/parser.mly"
-      ( let (nr, l, ext) = _1 in mksig_ext (Psig_type (nr, List.rev l)) ext )
-# 7414 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'sig_type_extension) in
-    Obj.repr(
-# 839 "ml/parser.mly"
-      ( let (l, ext) = _1 in mksig_ext (Psig_typext l) ext )
-# 7421 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'sig_exception_declaration) in
-    Obj.repr(
-# 841 "ml/parser.mly"
-      ( let (l, ext) = _1 in mksig_ext (Psig_exception l) ext )
-# 7428 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_declaration) in
-    Obj.repr(
-# 843 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_module body) ext )
-# 7435 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_alias) in
-    Obj.repr(
-# 845 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_module body) ext )
-# 7442 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'rec_module_declarations) in
-    Obj.repr(
-# 847 "ml/parser.mly"
-      ( let (l, ext) = _1 in mksig_ext (Psig_recmodule (List.rev l)) ext )
-# 7449 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_type_declaration) in
-    Obj.repr(
-# 849 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_modtype body) ext )
-# 7456 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'open_statement) in
-    Obj.repr(
-# 851 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_open body) ext )
-# 7463 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'sig_include_statement) in
-    Obj.repr(
-# 853 "ml/parser.mly"
-      ( let (body, ext) = _1 in mksig_ext (Psig_include body) ext )
-# 7470 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_descriptions) in
-    Obj.repr(
-# 855 "ml/parser.mly"
-      ( let (l, ext) = _1 in mksig_ext (Psig_class (List.rev l)) ext )
-# 7477 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_type_declarations) in
-    Obj.repr(
-# 857 "ml/parser.mly"
-      ( let (l, ext) = _1 in mksig_ext (Psig_class_type (List.rev l)) ext )
-# 7484 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'item_extension) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 859 "ml/parser.mly"
-      ( mksig(Psig_extension (_1, (add_docs_attrs (symbol_docs ()) _2))) )
-# 7492 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'floating_attribute) in
-    Obj.repr(
-# 861 "ml/parser.mly"
-      ( mark_symbol_docs ();
-        mksig(Psig_attribute _1) )
-# 7500 "ml/parser.ml"
-               : 'signature_item))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'override_flag) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'mod_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 866 "ml/parser.mly"
-      ( let (ext, attrs) = _3 in
-        Opn.mk (mkrhs _4 4) ~override:_2 ~attrs:(attrs@_5)
-          ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext)
-# 7513 "ml/parser.ml"
-               : 'open_statement))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 873 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Incl.mk _3 ~attrs:(attrs@_4)
-            ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext)
-# 7525 "ml/parser.ml"
-               : 'sig_include_statement))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'module_type) in
-    Obj.repr(
-# 880 "ml/parser.mly"
-      ( _2 )
-# 7532 "ml/parser.ml"
-               : 'module_declaration_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'module_type) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'module_declaration_body) in
-    Obj.repr(
-# 882 "ml/parser.mly"
-      ( mkmty(Pmty_functor(mkrhs _2 2, Some _4, _6)) )
-# 7541 "ml/parser.ml"
-               : 'module_declaration_body))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'module_declaration_body) in
-    Obj.repr(
-# 884 "ml/parser.mly"
-      ( mkmty(Pmty_functor(mkrhs "*" 1, None, _3)) )
-# 7548 "ml/parser.ml"
-               : 'module_declaration_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_declaration_body) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 888 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Md.mk (mkrhs _3 3) _4 ~attrs:(attrs@_5)
-          ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext )
-# 7561 "ml/parser.ml"
-               : 'module_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'mod_longident) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 895 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Md.mk (mkrhs _3 3)
-          (Mty.alias ~loc:(rhs_loc 5) (mkrhs _5 5)) ~attrs:(attrs@_6)
-             ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext )
-# 7575 "ml/parser.ml"
-               : 'module_alias))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'rec_module_declaration) in
-    Obj.repr(
-# 903 "ml/parser.mly"
-      ( let (body, ext) = _1 in ([body], ext) )
-# 7582 "ml/parser.ml"
-               : 'rec_module_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'rec_module_declarations) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_module_declaration) in
-    Obj.repr(
-# 905 "ml/parser.mly"
-      ( let (l, ext) = _1 in (_2 :: l, ext) )
-# 7590 "ml/parser.ml"
-               : 'rec_module_declarations))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 909 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Md.mk (mkrhs _4 4) _6 ~attrs:(attrs@_7)
-            ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext)
-# 7603 "ml/parser.ml"
-               : 'rec_module_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'module_type) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 916 "ml/parser.mly"
-      ( Md.mk (mkrhs _3 3) _5 ~attrs:(_2@_6) ~loc:(symbol_rloc())
-              ~text:(symbol_text()) ~docs:(symbol_docs()) )
-# 7614 "ml/parser.ml"
-               : 'and_module_declaration))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 920 "ml/parser.mly"
-                              ( None )
-# 7620 "ml/parser.ml"
-               : 'module_type_declaration_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'module_type) in
-    Obj.repr(
-# 921 "ml/parser.mly"
-                              ( Some _2 )
-# 7627 "ml/parser.ml"
-               : 'module_type_declaration_body))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'ident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'module_type_declaration_body) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 926 "ml/parser.mly"
-      ( let (ext, attrs) = _3 in
-        Mtd.mk (mkrhs _4 4) ?typ:_5 ~attrs:(attrs@_6)
-          ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext )
-# 7640 "ml/parser.ml"
-               : 'module_type_declaration))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 934 "ml/parser.mly"
-                                                ( [] )
-# 7646 "ml/parser.ml"
-               : 'class_type_parameters))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'type_parameter_list) in
-    Obj.repr(
-# 935 "ml/parser.mly"
-                                                ( List.rev _2 )
-# 7653 "ml/parser.ml"
-               : 'class_type_parameters))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_self_pattern) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'class_fields) in
-    Obj.repr(
-# 939 "ml/parser.mly"
-       ( Cstr.mk _1 (extra_cstr 2 (List.rev _2)) )
-# 7661 "ml/parser.ml"
-               : 'class_structure))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 943 "ml/parser.mly"
-      ( reloc_pat _2 )
-# 7668 "ml/parser.ml"
-               : 'class_self_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    Obj.repr(
-# 945 "ml/parser.mly"
-      ( mkpat(Ppat_constraint(_2, _4)) )
-# 7676 "ml/parser.ml"
-               : 'class_self_pattern))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 947 "ml/parser.mly"
-      ( ghpat(Ppat_any) )
-# 7682 "ml/parser.ml"
-               : 'class_self_pattern))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 951 "ml/parser.mly"
-      ( [] )
-# 7688 "ml/parser.ml"
-               : 'class_fields))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_fields) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'class_field) in
-    Obj.repr(
-# 953 "ml/parser.mly"
-      ( _2 :: (text_cstr 2) @ _1 )
-# 7696 "ml/parser.ml"
-               : 'class_fields))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'value) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 957 "ml/parser.mly"
-      ( let v, attrs = _2 in
-        mkcf (Pcf_val v) ~attrs:(attrs@_3) ~docs:(symbol_docs ()) )
-# 7705 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'method_) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 960 "ml/parser.mly"
-      ( let meth, attrs = _2 in
-        mkcf (Pcf_method meth) ~attrs:(attrs@_3) ~docs:(symbol_docs ()) )
-# 7714 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'constrain_field) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 963 "ml/parser.mly"
-      ( mkcf (Pcf_constraint _3) ~attrs:(_2@_4) ~docs:(symbol_docs ()) )
-# 7723 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 965 "ml/parser.mly"
-      ( mkcf (Pcf_initializer _3) ~attrs:(_2@_4) ~docs:(symbol_docs ()) )
-# 7732 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'item_extension) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 967 "ml/parser.mly"
-      ( mkcf (Pcf_extension _1) ~attrs:_2 ~docs:(symbol_docs ()) )
-# 7740 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'floating_attribute) in
-    Obj.repr(
-# 969 "ml/parser.mly"
-      ( mark_symbol_docs ();
-        mkcf (Pcf_attribute _1) )
-# 7748 "ml/parser.ml"
-               : 'class_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 975 "ml/parser.mly"
-      ( if _1 = Override then syntax_error ();
-        (mkloc _5 (rhs_loc 5), Mutable, Cfk_virtual _7), _2 )
-# 7759 "ml/parser.ml"
-               : 'value))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'mutable_flag) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 978 "ml/parser.mly"
-      ( if _1 = Override then syntax_error ();
-        (mkrhs _5 5, _4, Cfk_virtual _7), _2 )
-# 7771 "ml/parser.ml"
-               : 'value))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'mutable_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 981 "ml/parser.mly"
-      ( (mkrhs _4 4, _3, Cfk_concrete (_1, _6)), _2 )
-# 7782 "ml/parser.ml"
-               : 'value))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mutable_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'label) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'type_constraint) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 983 "ml/parser.mly"
-      (
-       let e = mkexp_constraint _7 _5 in
-       (mkrhs _4 4, _3, Cfk_concrete (_1, e)), _2
-      )
-# 7797 "ml/parser.ml"
-               : 'value))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'poly_type) in
-    Obj.repr(
-# 991 "ml/parser.mly"
-      ( if _1 = Override then syntax_error ();
-        (mkloc _5 (rhs_loc 5), Private, Cfk_virtual _7), _2 )
-# 7808 "ml/parser.ml"
-               : 'method_))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'private_flag) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'poly_type) in
-    Obj.repr(
-# 994 "ml/parser.mly"
-      ( if _1 = Override then syntax_error ();
-        (mkloc _5 (rhs_loc 5), _4, Cfk_virtual _7), _2 )
-# 7820 "ml/parser.ml"
-               : 'method_))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'private_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'label) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'strict_binding) in
-    Obj.repr(
-# 997 "ml/parser.mly"
-      ( (mkloc _4 (rhs_loc 4), _3,
-        Cfk_concrete (_1, ghexp(Pexp_poly (_5, None)))), _2 )
-# 7832 "ml/parser.ml"
-               : 'method_))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 7 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'private_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'label) in
-    let _6 = (Parsing.peek_val __caml_parser_env 2 : 'poly_type) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1000 "ml/parser.mly"
-      ( (mkloc _4 (rhs_loc 4), _3,
-        Cfk_concrete (_1, ghexp(Pexp_poly(_8, Some _6)))), _2 )
-# 7845 "ml/parser.ml"
-               : 'method_))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 10 : 'override_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 9 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 8 : 'private_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 7 : 'label) in
-    let _7 = (Parsing.peek_val __caml_parser_env 4 : 'lident_list) in
-    let _9 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _11 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1004 "ml/parser.mly"
-      ( let exp, poly = wrap_type_annotation _7 _9 _11 in
-        (mkloc _4 (rhs_loc 4), _3,
-        Cfk_concrete (_1, ghexp(Pexp_poly(exp, Some poly)))), _2 )
-# 7860 "ml/parser.ml"
-               : 'method_))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_signature) in
-    Obj.repr(
-# 1013 "ml/parser.mly"
-      ( _1 )
-# 7867 "ml/parser.ml"
-               : 'class_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type_or_tuple) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'class_type) in
-    Obj.repr(
-# 1016 "ml/parser.mly"
-      ( mkcty(Pcty_arrow(Optional _2 , _4, _6)) )
-# 7876 "ml/parser.ml"
-               : 'class_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type_or_tuple) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'class_type) in
-    Obj.repr(
-# 1018 "ml/parser.mly"
-      ( mkcty(Pcty_arrow(Optional _1, _2, _4)) )
-# 7885 "ml/parser.ml"
-               : 'class_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type_or_tuple) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'class_type) in
-    Obj.repr(
-# 1020 "ml/parser.mly"
-      ( mkcty(Pcty_arrow(Labelled _1, _3, _5)) )
-# 7894 "ml/parser.ml"
-               : 'class_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type_or_tuple) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'class_type) in
-    Obj.repr(
-# 1022 "ml/parser.mly"
-      ( mkcty(Pcty_arrow(Nolabel, _1, _3)) )
-# 7902 "ml/parser.ml"
-               : 'class_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'core_type_comma_list) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'clty_longident) in
-    Obj.repr(
-# 1026 "ml/parser.mly"
-      ( mkcty(Pcty_constr (mkloc _4 (rhs_loc 4), List.rev _2)) )
-# 7910 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'clty_longident) in
-    Obj.repr(
-# 1028 "ml/parser.mly"
-      ( mkcty(Pcty_constr (mkrhs _1 1, [])) )
-# 7917 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'class_sig_body) in
-    Obj.repr(
-# 1030 "ml/parser.mly"
-      ( mkcty ~attrs:_2 (Pcty_signature _3) )
-# 7925 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'class_sig_body) in
-    Obj.repr(
-# 1032 "ml/parser.mly"
-      ( unclosed "object" 1 "end" 4 )
-# 7933 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_signature) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 1034 "ml/parser.mly"
-      ( Cty.attr _1 _2 )
-# 7941 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 1036 "ml/parser.mly"
-      ( mkcty(Pcty_extension _1) )
-# 7948 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'override_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'class_signature) in
-    Obj.repr(
-# 1038 "ml/parser.mly"
-      ( wrap_class_type_attrs (mkcty(Pcty_open(_3, mkrhs _5 5, _7))) _4 )
-# 7958 "ml/parser.ml"
-               : 'class_signature))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_self_type) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'class_sig_fields) in
-    Obj.repr(
-# 1042 "ml/parser.mly"
-      ( Csig.mk _1 (extra_csig 2 (List.rev _2)) )
-# 7966 "ml/parser.ml"
-               : 'class_sig_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    Obj.repr(
-# 1046 "ml/parser.mly"
-      ( _2 )
-# 7973 "ml/parser.ml"
-               : 'class_self_type))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1048 "ml/parser.mly"
-      ( mktyp(Ptyp_any) )
-# 7979 "ml/parser.ml"
-               : 'class_self_type))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1051 "ml/parser.mly"
-                                                ( [] )
-# 7985 "ml/parser.ml"
-               : 'class_sig_fields))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_sig_fields) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'class_sig_field) in
-    Obj.repr(
-# 1052 "ml/parser.mly"
-                                       ( _2 :: (text_csig 2) @ _1 )
-# 7993 "ml/parser.ml"
-               : 'class_sig_fields))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'class_signature) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1056 "ml/parser.mly"
-      ( mkctf (Pctf_inherit _3) ~attrs:(_2@_4) ~docs:(symbol_docs ()) )
-# 8002 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'value_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1058 "ml/parser.mly"
-      ( mkctf (Pctf_val _3) ~attrs:(_2@_4) ~docs:(symbol_docs ()) )
-# 8011 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'private_virtual_flags) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'label) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'poly_type) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1061 "ml/parser.mly"
-      (
-       let (p, v) = _3 in
-       mkctf (Pctf_method (mkrhs _4 4, p, v, _6)) ~attrs:(_2@_7) ~docs:(symbol_docs ())
-      )
-# 8025 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'constrain_field) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1066 "ml/parser.mly"
-      ( mkctf (Pctf_constraint _3) ~attrs:(_2@_4) ~docs:(symbol_docs ()) )
-# 8034 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'item_extension) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1068 "ml/parser.mly"
-      ( mkctf (Pctf_extension _1) ~attrs:_2 ~docs:(symbol_docs ()) )
-# 8042 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'floating_attribute) in
-    Obj.repr(
-# 1070 "ml/parser.mly"
-      ( mark_symbol_docs ();
-        mkctf(Pctf_attribute _1) )
-# 8050 "ml/parser.ml"
-               : 'class_sig_field))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'mutable_flag) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1075 "ml/parser.mly"
-      ( mkrhs _3 3, _2, Virtual, _5 )
-# 8059 "ml/parser.ml"
-               : 'value_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'virtual_flag) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1077 "ml/parser.mly"
-      ( mkrhs _3 3, Mutable, _2, _5 )
-# 8068 "ml/parser.ml"
-               : 'value_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1079 "ml/parser.mly"
-      ( mkrhs _1 1, Immutable, Concrete, _3 )
-# 8076 "ml/parser.ml"
-               : 'value_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1082 "ml/parser.mly"
-                                           ( _1, _3, symbol_rloc() )
-# 8084 "ml/parser.ml"
-               : 'constrain))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1085 "ml/parser.mly"
-                                           ( _1, _3 )
-# 8092 "ml/parser.ml"
-               : 'constrain_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_description) in
-    Obj.repr(
-# 1089 "ml/parser.mly"
-      ( let (body, ext) = _1 in ([body],ext) )
-# 8099 "ml/parser.ml"
-               : 'class_descriptions))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_descriptions) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_class_description) in
-    Obj.repr(
-# 1091 "ml/parser.mly"
-      ( let (l, ext) = _1 in (_2 :: l, ext) )
-# 8107 "ml/parser.ml"
-               : 'class_descriptions))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'virtual_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'class_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _7 = (Parsing.peek_val __caml_parser_env 1 : 'class_type) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1096 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Ci.mk (mkrhs _5 5) _7 ~virt:_3 ~params:_4 ~attrs:(attrs @ _8)
-            ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-      , ext )
-# 8122 "ml/parser.ml"
-               : 'class_description))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'virtual_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'class_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _7 = (Parsing.peek_val __caml_parser_env 1 : 'class_type) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1104 "ml/parser.mly"
-      ( Ci.mk (mkrhs _5 5) _7 ~virt:_3 ~params:_4
-              ~attrs:(_2@_8) ~loc:(symbol_rloc ())
-              ~text:(symbol_text ()) ~docs:(symbol_docs ()) )
-# 8136 "ml/parser.ml"
-               : 'and_class_description))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'class_type_declaration) in
-    Obj.repr(
-# 1110 "ml/parser.mly"
-      ( let (body, ext) = _1 in ([body],ext) )
-# 8143 "ml/parser.ml"
-               : 'class_type_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'class_type_declarations) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_class_type_declaration) in
-    Obj.repr(
-# 1112 "ml/parser.mly"
-      ( let (l, ext) = _1 in (_2 :: l, ext) )
-# 8151 "ml/parser.ml"
-               : 'class_type_declarations))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : 'virtual_flag) in
-    let _5 = (Parsing.peek_val __caml_parser_env 4 : 'class_type_parameters) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _8 = (Parsing.peek_val __caml_parser_env 1 : 'class_signature) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1117 "ml/parser.mly"
-      ( let (ext, attrs) = _3 in
-        Ci.mk (mkrhs _6 6) _8 ~virt:_4 ~params:_5 ~attrs:(attrs@_9)
-            ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-      , ext)
-# 8166 "ml/parser.ml"
-               : 'class_type_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'virtual_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'class_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _7 = (Parsing.peek_val __caml_parser_env 1 : 'class_signature) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1125 "ml/parser.mly"
-      ( Ci.mk (mkrhs _5 5) _7 ~virt:_3 ~params:_4
-         ~attrs:(_2@_8) ~loc:(symbol_rloc ())
-         ~text:(symbol_text ()) ~docs:(symbol_docs ()) )
-# 8180 "ml/parser.ml"
-               : 'and_class_type_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1133 "ml/parser.mly"
-                                  ( _1 )
-# 8187 "ml/parser.ml"
-               : 'seq_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1134 "ml/parser.mly"
-                                  ( _1 )
-# 8194 "ml/parser.ml"
-               : 'seq_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1135 "ml/parser.mly"
-                                  ( mkexp(Pexp_sequence(_1, _3)) )
-# 8202 "ml/parser.ml"
-               : 'seq_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'attr_id) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1137 "ml/parser.mly"
-      ( let seq = mkexp(Pexp_sequence (_1, _5)) in
-        let payload = PStr [mkstrexp seq []] in
-        mkexp (Pexp_extension (_4, payload)) )
-# 8213 "ml/parser.ml"
-               : 'seq_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'label_let_pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'opt_default) in
-    Obj.repr(
-# 1143 "ml/parser.mly"
-      ( (Optional (fst _3), _4, snd _3) )
-# 8221 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'label_var) in
-    Obj.repr(
-# 1145 "ml/parser.mly"
-      ( (Optional (fst _2), None, snd _2) )
-# 8228 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'let_pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'opt_default) in
-    Obj.repr(
-# 1147 "ml/parser.mly"
-      ( (Optional _1, _4, _3) )
-# 8237 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'pattern_var) in
-    Obj.repr(
-# 1149 "ml/parser.mly"
-      ( (Optional _1, None, _2) )
-# 8245 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'label_let_pattern) in
-    Obj.repr(
-# 1151 "ml/parser.mly"
-      ( (Labelled (fst _3), None, snd _3) )
-# 8252 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'label_var) in
-    Obj.repr(
-# 1153 "ml/parser.mly"
-      ( (Labelled (fst _2), None, snd _2) )
-# 8259 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_pattern) in
-    Obj.repr(
-# 1155 "ml/parser.mly"
-      ( (Labelled _1, None, _2) )
-# 8267 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_pattern) in
-    Obj.repr(
-# 1157 "ml/parser.mly"
-      ( (Nolabel, None, _1) )
-# 8274 "ml/parser.ml"
-               : 'labeled_simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 1160 "ml/parser.mly"
-                      ( mkpat(Ppat_var (mkrhs _1 1)) )
-# 8281 "ml/parser.ml"
-               : 'pattern_var))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1161 "ml/parser.mly"
-                      ( mkpat Ppat_any )
-# 8287 "ml/parser.ml"
-               : 'pattern_var))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1164 "ml/parser.mly"
-                                        ( None )
-# 8293 "ml/parser.ml"
-               : 'opt_default))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1165 "ml/parser.mly"
-                                        ( Some _2 )
-# 8300 "ml/parser.ml"
-               : 'opt_default))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'label_var) in
-    Obj.repr(
-# 1169 "ml/parser.mly"
-      ( _1 )
-# 8307 "ml/parser.ml"
-               : 'label_let_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'label_var) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1171 "ml/parser.mly"
-      ( let (lab, pat) = _1 in (lab, mkpat(Ppat_constraint(pat, _3))) )
-# 8315 "ml/parser.ml"
-               : 'label_let_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 1174 "ml/parser.mly"
-              ( (_1, mkpat(Ppat_var (mkrhs _1 1))) )
-# 8322 "ml/parser.ml"
-               : 'label_var))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1178 "ml/parser.mly"
-      ( _1 )
-# 8329 "ml/parser.ml"
-               : 'let_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1180 "ml/parser.mly"
-      ( mkpat(Ppat_constraint(_1, _3)) )
-# 8337 "ml/parser.ml"
-               : 'let_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1184 "ml/parser.mly"
-      ( _1 )
-# 8344 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_labeled_expr_list) in
-    Obj.repr(
-# 1186 "ml/parser.mly"
-      ( mkexp(Pexp_apply(_1, List.rev _2)) )
-# 8352 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'let_bindings) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1188 "ml/parser.mly"
-      ( expr_of_let_bindings _1 _3 )
-# 8360 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'module_binding_body) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1190 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_letmodule(mkrhs _4 4, _5, _7)) _3 )
-# 8370 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'let_exception_declaration) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1192 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_letexception(_4, _6)) _3 )
-# 8379 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'override_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1194 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_open(_3, mkrhs _5 5, _7)) _4 )
-# 8389 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_bar) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'match_cases) in
-    Obj.repr(
-# 1196 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_function(List.rev _4)) _2 )
-# 8398 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'labeled_simple_pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'fun_def) in
-    Obj.repr(
-# 1198 "ml/parser.mly"
-      ( let (l,o,p) = _3 in
-        mkexp_attrs (Pexp_fun(l, o, p, _4)) _2 )
-# 8408 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'ext_attributes) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'lident_list) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'fun_def) in
-    Obj.repr(
-# 1201 "ml/parser.mly"
-      ( mkexp_attrs (mk_newtypes _5 _7).pexp_desc _2 )
-# 8417 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_bar) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'match_cases) in
-    Obj.repr(
-# 1203 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_match(_3, List.rev _6)) _2 )
-# 8427 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_bar) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'match_cases) in
-    Obj.repr(
-# 1205 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_try(_3, List.rev _6)) _2 )
-# 8437 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    Obj.repr(
-# 1207 "ml/parser.mly"
-      ( syntax_error() )
-# 8445 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'expr_comma_list) in
-    Obj.repr(
-# 1209 "ml/parser.mly"
-      ( mkexp(Pexp_tuple(List.rev _1)) )
-# 8452 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'constr_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1211 "ml/parser.mly"
-      ( mkexp(Pexp_construct(mkrhs _1 1, Some _2)) )
-# 8460 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'name_tag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1213 "ml/parser.mly"
-      ( mkexp(Pexp_variant(_1, Some _2)) )
-# 8468 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1215 "ml/parser.mly"
-      ( mkexp_attrs(Pexp_ifthenelse(_3, _5, Some _7)) _2 )
-# 8478 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1217 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_ifthenelse(_3, _5, None)) _2 )
-# 8487 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1219 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_while(_3, _5)) _2 )
-# 8496 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 8 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 7 : 'pattern) in
-    let _5 = (Parsing.peek_val __caml_parser_env 5 : 'seq_expr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 4 : 'direction_flag) in
-    let _7 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _9 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1222 "ml/parser.mly"
-      ( mkexp_attrs(Pexp_for(_3, _5, _7, _6, _9)) _2 )
-# 8508 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1224 "ml/parser.mly"
-      ( mkexp_cons (rhs_loc 2) (ghexp(Pexp_tuple[_1;_3])) (symbol_rloc()) )
-# 8516 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1226 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 8525 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1228 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 8534 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1230 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 8543 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1232 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 8552 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1234 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 8561 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1236 "ml/parser.mly"
-      ( mkinfix _1 "+" _3 )
-# 8569 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1238 "ml/parser.mly"
-      ( mkinfix _1 "+." _3 )
-# 8577 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1240 "ml/parser.mly"
-      ( mkinfix _1 "+=" _3 )
-# 8585 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1242 "ml/parser.mly"
-      ( mkinfix _1 "-" _3 )
-# 8593 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1244 "ml/parser.mly"
-      ( mkinfix _1 "-." _3 )
-# 8601 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1246 "ml/parser.mly"
-      ( mkinfix _1 "*" _3 )
-# 8609 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1248 "ml/parser.mly"
-      ( mkinfix _1 "%" _3 )
-# 8617 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1250 "ml/parser.mly"
-      ( mkinfix _1 "=" _3 )
-# 8625 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1252 "ml/parser.mly"
-    ( mkinfix _1 "<" _3 )
-# 8633 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1254 "ml/parser.mly"
-      ( mkinfix _1 ">" _3 )
-# 8641 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1256 "ml/parser.mly"
-      ( mkinfix _1 "or" _3 )
-# 8649 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1258 "ml/parser.mly"
-      ( mkinfix _1 "||" _3 )
-# 8657 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1260 "ml/parser.mly"
-      ( mkinfix _1 "&" _3 )
-# 8665 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1262 "ml/parser.mly"
-      ( mkinfix _1 "&&" _3 )
-# 8673 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1264 "ml/parser.mly"
-      ( mkinfix _1 ":=" _3 )
-# 8681 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'subtractive) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1266 "ml/parser.mly"
-      ( mkuminus _1 _2 )
-# 8689 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'additive) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1268 "ml/parser.mly"
-      ( mkuplus _1 _2 )
-# 8697 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'label_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1270 "ml/parser.mly"
-      ( mkexp(Pexp_setfield(_1, mkrhs _3 3, _5)) )
-# 8706 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1272 "ml/parser.mly"
-      ( mkexp(Pexp_apply(ghexp(Pexp_ident(array_function "Array" "set")),
-                         [Nolabel,_1; Nolabel,_4; Nolabel,_7])) )
-# 8716 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'seq_expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1275 "ml/parser.mly"
-      ( mkexp(Pexp_apply(ghexp(Pexp_ident(array_function "String" "set")),
-                         [Nolabel,_1; Nolabel,_4; Nolabel,_7])) )
-# 8726 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1278 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "[]<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _4; Nolabel, _7]) )
-# 8737 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1281 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "()<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _4; Nolabel, _7]) )
-# 8748 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1284 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "{}<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _4; Nolabel, _7]) )
-# 8759 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 8 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1287 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3,"." ^ _4 ^ "[]<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _6; Nolabel, _9]) )
-# 8771 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 8 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1290 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3, "." ^ _4 ^ "()<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _6; Nolabel, _9]) )
-# 8783 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 8 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : 'expr) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1293 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3, "." ^ _4 ^ "{}<-")) in
-        mkexp @@ Pexp_apply(id , [Nolabel, _1; Nolabel, _6; Nolabel, _9]) )
-# 8795 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1296 "ml/parser.mly"
-      ( mkexp(Pexp_setinstvar(mkrhs _1 1, _3)) )
-# 8803 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1298 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_assert _3) _2 )
-# 8811 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1300 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_lazy _3) _2 )
-# 8819 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'class_structure) in
-    Obj.repr(
-# 1302 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_object _3) _2 )
-# 8827 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'class_structure) in
-    Obj.repr(
-# 1304 "ml/parser.mly"
-      ( unclosed "object" 1 "end" 4 )
-# 8835 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 1306 "ml/parser.mly"
-      ( Exp.attr _1 _2 )
-# 8843 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1308 "ml/parser.mly"
-     ( not_expecting 1 "wildcard \"_\"" )
-# 8849 "ml/parser.ml"
-               : 'expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'val_longident) in
-    Obj.repr(
-# 1312 "ml/parser.mly"
-      ( mkexp(Pexp_ident (mkrhs _1 1)) )
-# 8856 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'constant) in
-    Obj.repr(
-# 1314 "ml/parser.mly"
-      ( mkexp(Pexp_constant _1) )
-# 8863 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'constr_longident) in
-    Obj.repr(
-# 1316 "ml/parser.mly"
-      ( mkexp(Pexp_construct(mkrhs _1 1, None)) )
-# 8870 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'name_tag) in
-    Obj.repr(
-# 1318 "ml/parser.mly"
-      ( mkexp(Pexp_variant(_1, None)) )
-# 8877 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1320 "ml/parser.mly"
-      ( reloc_exp _2 )
-# 8884 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1322 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 3 )
-# 8891 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1324 "ml/parser.mly"
-      ( wrap_exp_attrs (reloc_exp _3) _2 (* check location *) )
-# 8899 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ext_attributes) in
-    Obj.repr(
-# 1326 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_construct (mkloc (Lident "()") (symbol_rloc ()),
-                               None)) _2 )
-# 8907 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1329 "ml/parser.mly"
-      ( unclosed "begin" 1 "end" 4 )
-# 8915 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'type_constraint) in
-    Obj.repr(
-# 1331 "ml/parser.mly"
-      ( mkexp_constraint _2 _3 )
-# 8923 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'label_longident) in
-    Obj.repr(
-# 1333 "ml/parser.mly"
-      ( mkexp(Pexp_field(_1, mkrhs _3 3)) )
-# 8931 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1335 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1, _4)) )
-# 8939 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1337 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1,
-                        mkexp(Pexp_construct(mkrhs (Lident "()") 1, None)))) )
-# 8947 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1340 "ml/parser.mly"
-      ( unclosed "(" 3 ")" 5 )
-# 8955 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1342 "ml/parser.mly"
-      ( mkexp(Pexp_apply(ghexp(Pexp_ident(array_function "Array" "get")),
-                         [Nolabel,_1; Nolabel,_4])) )
-# 8964 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1345 "ml/parser.mly"
-      ( unclosed "(" 3 ")" 5 )
-# 8972 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1347 "ml/parser.mly"
-      ( mkexp(Pexp_apply(ghexp(Pexp_ident(array_function "String" "get")),
-                         [Nolabel,_1; Nolabel,_4])) )
-# 8981 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'seq_expr) in
-    Obj.repr(
-# 1350 "ml/parser.mly"
-      ( unclosed "[" 3 "]" 5 )
-# 8989 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1352 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "[]")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _4]) )
-# 8999 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1355 "ml/parser.mly"
-      ( unclosed "[" 3 "]" 5 )
-# 9008 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1357 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "()")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _4]) )
-# 9018 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1360 "ml/parser.mly"
-      ( unclosed "(" 3 ")" 5 )
-# 9027 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1362 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Lident ("." ^ _2 ^ "{}")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _4]) )
-# 9037 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1365 "ml/parser.mly"
-      ( unclosed "{" 3 "}" 5 )
-# 9046 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1367 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3, "." ^ _4 ^ "[]")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _6]) )
-# 9057 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1370 "ml/parser.mly"
-      ( unclosed "[" 5 "]" 7 )
-# 9067 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1372 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3, "." ^ _4 ^ "()")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _6]) )
-# 9078 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1375 "ml/parser.mly"
-      ( unclosed "(" 5 ")" 7 )
-# 9088 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1377 "ml/parser.mly"
-      ( let id = mkexp @@ Pexp_ident( ghloc @@ Ldot(_3, "." ^ _4 ^ "{}")) in
-        mkexp @@ Pexp_apply(id, [Nolabel, _1; Nolabel, _6]) )
-# 9099 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'expr) in
-    Obj.repr(
-# 1380 "ml/parser.mly"
-      ( unclosed "{" 5 "}" 7 )
-# 9109 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_expr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'expr_comma_list) in
-    Obj.repr(
-# 1382 "ml/parser.mly"
-      ( unclosed "{" 3 "}" 5 )
-# 9117 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'record_expr) in
-    Obj.repr(
-# 1384 "ml/parser.mly"
-      ( let (exten, fields) = _2 in mkexp (Pexp_record(fields, exten)) )
-# 9124 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'record_expr) in
-    Obj.repr(
-# 1386 "ml/parser.mly"
-      ( unclosed "{" 1 "}" 3 )
-# 9131 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'record_expr) in
-    Obj.repr(
-# 1388 "ml/parser.mly"
-      ( let (exten, fields) = _4 in
-        let rec_exp = mkexp(Pexp_record(fields, exten)) in
-        mkexp(Pexp_open(Fresh, mkrhs _1 1, rec_exp)) )
-# 9141 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'record_expr) in
-    Obj.repr(
-# 1392 "ml/parser.mly"
-      ( unclosed "{" 3 "}" 5 )
-# 9149 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1394 "ml/parser.mly"
-      ( mkexp (Pexp_array(List.rev _2)) )
-# 9157 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1396 "ml/parser.mly"
-      ( unclosed "[|" 1 "|]" 4 )
-# 9165 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1398 "ml/parser.mly"
-      ( mkexp (Pexp_array []) )
-# 9171 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1400 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1, mkexp(Pexp_array(List.rev _4)))) )
-# 9180 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1402 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1, mkexp(Pexp_array []))) )
-# 9187 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1404 "ml/parser.mly"
-      ( unclosed "[|" 3 "|]" 6 )
-# 9196 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1406 "ml/parser.mly"
-      ( reloc_exp (mktailexp (rhs_loc 4) (List.rev _2)) )
-# 9204 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1408 "ml/parser.mly"
-      ( unclosed "[" 1 "]" 4 )
-# 9212 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1410 "ml/parser.mly"
-      ( let list_exp = reloc_exp (mktailexp (rhs_loc 6) (List.rev _4)) in
-        mkexp(Pexp_open(Fresh, mkrhs _1 1, list_exp)) )
-# 9222 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1413 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1,
-                        mkexp(Pexp_construct(mkrhs (Lident "[]") 1, None)))) )
-# 9230 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1416 "ml/parser.mly"
-      ( unclosed "[" 3 "]" 6 )
-# 9239 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1418 "ml/parser.mly"
-      ( mkexp(Pexp_apply(mkoperator _1 1, [Nolabel,_2])) )
-# 9247 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1420 "ml/parser.mly"
-      ( mkexp(Pexp_apply(mkoperator "!" 1, [Nolabel,_2])) )
-# 9254 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'field_expr_list) in
-    Obj.repr(
-# 1422 "ml/parser.mly"
-      ( mkexp (Pexp_override _2) )
-# 9261 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'field_expr_list) in
-    Obj.repr(
-# 1424 "ml/parser.mly"
-      ( unclosed "{<" 1 ">}" 3 )
-# 9268 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1426 "ml/parser.mly"
-      ( mkexp (Pexp_override []))
-# 9274 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'field_expr_list) in
-    Obj.repr(
-# 1428 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1, mkexp (Pexp_override _4))))
-# 9282 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1430 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1, mkexp (Pexp_override []))))
-# 9289 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'field_expr_list) in
-    Obj.repr(
-# 1432 "ml/parser.mly"
-      ( unclosed "{<" 3 ">}" 5 )
-# 9297 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'label) in
-    Obj.repr(
-# 1434 "ml/parser.mly"
-      ( mkexp(Pexp_send(_1, mkrhs _3 3)) )
-# 9305 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1436 "ml/parser.mly"
-      ( mkinfix _1 _2 _3 )
-# 9314 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'module_expr) in
-    Obj.repr(
-# 1438 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_pack _4) _3 )
-# 9322 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'module_expr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 1440 "ml/parser.mly"
-      ( mkexp_attrs (Pexp_constraint (ghexp (Pexp_pack _4),
-                                      ghtyp (Ptyp_package _6)))
-                    _3 )
-# 9333 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'module_expr) in
-    Obj.repr(
-# 1444 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 6 )
-# 9341 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 8 : 'mod_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _6 = (Parsing.peek_val __caml_parser_env 3 : 'module_expr) in
-    let _8 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 1447 "ml/parser.mly"
-      ( mkexp(Pexp_open(Fresh, mkrhs _1 1,
-        mkexp_attrs (Pexp_constraint (ghexp (Pexp_pack _6),
-                                ghtyp (Ptyp_package _8)))
-                    _5 )) )
-# 9354 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 7 : 'mod_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _6 = (Parsing.peek_val __caml_parser_env 2 : 'module_expr) in
-    Obj.repr(
-# 1452 "ml/parser.mly"
-      ( unclosed "(" 3 ")" 8 )
-# 9363 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 1454 "ml/parser.mly"
-      ( mkexp (Pexp_extension _1) )
-# 9370 "ml/parser.ml"
-               : 'simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'labeled_simple_expr) in
-    Obj.repr(
-# 1458 "ml/parser.mly"
-      ( [_1] )
-# 9377 "ml/parser.ml"
-               : 'simple_labeled_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'simple_labeled_expr_list) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'labeled_simple_expr) in
-    Obj.repr(
-# 1460 "ml/parser.mly"
-      ( _2 :: _1 )
-# 9385 "ml/parser.ml"
-               : 'simple_labeled_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1464 "ml/parser.mly"
-      ( (Nolabel, _1) )
-# 9392 "ml/parser.ml"
-               : 'labeled_simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'label_expr) in
-    Obj.repr(
-# 1466 "ml/parser.mly"
-      ( _1 )
-# 9399 "ml/parser.ml"
-               : 'labeled_simple_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1470 "ml/parser.mly"
-      ( (Labelled _1, _2) )
-# 9407 "ml/parser.ml"
-               : 'label_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'label_ident) in
-    Obj.repr(
-# 1472 "ml/parser.mly"
-      ( (Labelled (fst _2), snd _2) )
-# 9414 "ml/parser.ml"
-               : 'label_expr))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'label_ident) in
-    Obj.repr(
-# 1474 "ml/parser.mly"
-      ( (Optional (fst _2), snd _2) )
-# 9421 "ml/parser.ml"
-               : 'label_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_expr) in
-    Obj.repr(
-# 1476 "ml/parser.mly"
-      ( (Optional _1, _2) )
-# 9429 "ml/parser.ml"
-               : 'label_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 1479 "ml/parser.mly"
-             ( (_1, mkexp(Pexp_ident(mkrhs (Lident _1) 1))) )
-# 9436 "ml/parser.ml"
-               : 'label_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 1482 "ml/parser.mly"
-                                      ( [mkrhs _1 1] )
-# 9443 "ml/parser.ml"
-               : 'lident_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'lident_list) in
-    Obj.repr(
-# 1483 "ml/parser.mly"
-                                      ( mkrhs _1 1 :: _2 )
-# 9451 "ml/parser.ml"
-               : 'lident_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'val_ident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'strict_binding) in
-    Obj.repr(
-# 1487 "ml/parser.mly"
-      ( (mkpatvar _1 1, _2) )
-# 9459 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'val_ident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'type_constraint) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1489 "ml/parser.mly"
-      ( let v = mkpatvar _1 1 in (* PR#7344 *)
-        let t =
-          match _2 with
-            Some t, None -> t
-          | _, Some t -> t
-          | _ -> assert false
-        in
-        (ghpat(Ppat_constraint(v, ghtyp(Ptyp_poly([],t)))),
-         mkexp_constraint _4 _2) )
-# 9476 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'val_ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'typevar_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1499 "ml/parser.mly"
-      ( (ghpat(Ppat_constraint(mkpatvar _1 1,
-                               ghtyp(Ptyp_poly(List.rev _3,_5)))),
-         _7) )
-# 9488 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 7 : 'val_ident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'lident_list) in
-    let _6 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1503 "ml/parser.mly"
-      ( let exp, poly = wrap_type_annotation _4 _6 _8 in
-        (ghpat(Ppat_constraint(mkpatvar _1 1, poly)), exp) )
-# 9499 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1506 "ml/parser.mly"
-      ( (_1, _3) )
-# 9507 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'simple_pattern_not_ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1508 "ml/parser.mly"
-      ( (ghpat(Ppat_constraint(_1, _3)), _5) )
-# 9516 "ml/parser.ml"
-               : 'let_binding_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'let_binding) in
-    Obj.repr(
-# 1511 "ml/parser.mly"
-                                                ( _1 )
-# 9523 "ml/parser.ml"
-               : 'let_bindings))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'let_bindings) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_let_binding) in
-    Obj.repr(
-# 1512 "ml/parser.mly"
-                                                ( addlb _1 _2 )
-# 9531 "ml/parser.ml"
-               : 'let_bindings))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'rec_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'let_binding_body) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1516 "ml/parser.mly"
-      ( let (ext, attr) = _2 in
-        mklbs ext _3 (mklb true _4 (attr@_5)) )
-# 9542 "ml/parser.ml"
-               : 'let_binding))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'let_binding_body) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1521 "ml/parser.mly"
-      ( mklb false _3 (_2@_4) )
-# 9551 "ml/parser.ml"
-               : 'and_let_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'strict_binding) in
-    Obj.repr(
-# 1525 "ml/parser.mly"
-      ( _1 )
-# 9558 "ml/parser.ml"
-               : 'fun_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'type_constraint) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1527 "ml/parser.mly"
-      ( mkexp_constraint _3 _1 )
-# 9566 "ml/parser.ml"
-               : 'fun_binding))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1531 "ml/parser.mly"
-      ( _2 )
-# 9573 "ml/parser.ml"
-               : 'strict_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'labeled_simple_pattern) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'fun_binding) in
-    Obj.repr(
-# 1533 "ml/parser.mly"
-      ( let (l, o, p) = _1 in ghexp(Pexp_fun(l, o, p, _2)) )
-# 9581 "ml/parser.ml"
-               : 'strict_binding))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'lident_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'fun_binding) in
-    Obj.repr(
-# 1535 "ml/parser.mly"
-      ( mk_newtypes _3 _5 )
-# 9589 "ml/parser.ml"
-               : 'strict_binding))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'match_case) in
-    Obj.repr(
-# 1538 "ml/parser.mly"
-               ( [_1] )
-# 9596 "ml/parser.ml"
-               : 'match_cases))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'match_cases) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'match_case) in
-    Obj.repr(
-# 1539 "ml/parser.mly"
-                               ( _3 :: _1 )
-# 9604 "ml/parser.ml"
-               : 'match_cases))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1543 "ml/parser.mly"
-      ( Exp.case _1 _3 )
-# 9612 "ml/parser.ml"
-               : 'match_case))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'seq_expr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1545 "ml/parser.mly"
-      ( Exp.case _1 ~guard:_3 _5 )
-# 9621 "ml/parser.ml"
-               : 'match_case))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1547 "ml/parser.mly"
-      ( Exp.case _1 (Exp.unreachable ~loc:(rhs_loc 3) ()))
-# 9628 "ml/parser.ml"
-               : 'match_case))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1551 "ml/parser.mly"
-      ( _2 )
-# 9635 "ml/parser.ml"
-               : 'fun_def))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 1553 "ml/parser.mly"
-      ( mkexp (Pexp_constraint (_4, _2)) )
-# 9643 "ml/parser.ml"
-               : 'fun_def))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'labeled_simple_pattern) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'fun_def) in
-    Obj.repr(
-# 1556 "ml/parser.mly"
-      (
-       let (l,o,p) = _1 in
-       ghexp(Pexp_fun(l, o, p, _2))
-      )
-# 9654 "ml/parser.ml"
-               : 'fun_def))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'lident_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'fun_def) in
-    Obj.repr(
-# 1561 "ml/parser.mly"
-      ( mk_newtypes _3 _5 )
-# 9662 "ml/parser.ml"
-               : 'fun_def))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr_comma_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1564 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 9670 "ml/parser.ml"
-               : 'expr_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1565 "ml/parser.mly"
-                                                ( [_3; _1] )
-# 9678 "ml/parser.ml"
-               : 'expr_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_expr_list) in
-    Obj.repr(
-# 1568 "ml/parser.mly"
-                                                ( (Some _1, _3) )
-# 9686 "ml/parser.ml"
-               : 'record_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_expr_list) in
-    Obj.repr(
-# 1569 "ml/parser.mly"
-                                                ( (None, _1) )
-# 9693 "ml/parser.ml"
-               : 'record_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_expr) in
-    Obj.repr(
-# 1572 "ml/parser.mly"
-              ( [_1] )
-# 9700 "ml/parser.ml"
-               : 'lbl_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'lbl_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_expr_list) in
-    Obj.repr(
-# 1573 "ml/parser.mly"
-                                 ( _1 :: _3 )
-# 9708 "ml/parser.ml"
-               : 'lbl_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'lbl_expr) in
-    Obj.repr(
-# 1574 "ml/parser.mly"
-                   ( [_1] )
-# 9715 "ml/parser.ml"
-               : 'lbl_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'label_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'opt_type_constraint) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1578 "ml/parser.mly"
-      ( (mkrhs _1 1, mkexp_opt_constraint _4 _2) )
-# 9724 "ml/parser.ml"
-               : 'lbl_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'label_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'opt_type_constraint) in
-    Obj.repr(
-# 1580 "ml/parser.mly"
-      ( (mkrhs _1 1, mkexp_opt_constraint (exp_of_label _1 1) _2) )
-# 9732 "ml/parser.ml"
-               : 'lbl_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'field_expr) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'opt_semi) in
-    Obj.repr(
-# 1583 "ml/parser.mly"
-                        ( [_1] )
-# 9740 "ml/parser.ml"
-               : 'field_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'field_expr) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'field_expr_list) in
-    Obj.repr(
-# 1584 "ml/parser.mly"
-                                    ( _1 :: _3 )
-# 9748 "ml/parser.ml"
-               : 'field_expr_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'label) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1588 "ml/parser.mly"
-      ( (mkrhs _1 1, _3) )
-# 9756 "ml/parser.ml"
-               : 'field_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'label) in
-    Obj.repr(
-# 1590 "ml/parser.mly"
-      ( (mkrhs _1 1, exp_of_label (Lident _1) 1) )
-# 9763 "ml/parser.ml"
-               : 'field_expr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1593 "ml/parser.mly"
-                                                ( [_1] )
-# 9770 "ml/parser.ml"
-               : 'expr_semi_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'expr_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'expr) in
-    Obj.repr(
-# 1594 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 9778 "ml/parser.ml"
-               : 'expr_semi_list))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1597 "ml/parser.mly"
-                                                ( (Some _2, None) )
-# 9785 "ml/parser.ml"
-               : 'type_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'core_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1598 "ml/parser.mly"
-                                                ( (Some _2, Some _4) )
-# 9793 "ml/parser.ml"
-               : 'type_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1599 "ml/parser.mly"
-                                                ( (None, Some _2) )
-# 9800 "ml/parser.ml"
-               : 'type_constraint))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1600 "ml/parser.mly"
-                                                ( syntax_error() )
-# 9806 "ml/parser.ml"
-               : 'type_constraint))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1601 "ml/parser.mly"
-                                                ( syntax_error() )
-# 9812 "ml/parser.ml"
-               : 'type_constraint))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_constraint) in
-    Obj.repr(
-# 1604 "ml/parser.mly"
-                    ( Some _1 )
-# 9819 "ml/parser.ml"
-               : 'opt_type_constraint))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1605 "ml/parser.mly"
-                ( None )
-# 9825 "ml/parser.ml"
-               : 'opt_type_constraint))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'val_ident) in
-    Obj.repr(
-# 1612 "ml/parser.mly"
-      ( mkpat(Ppat_alias(_1, mkrhs _3 3)) )
-# 9833 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1614 "ml/parser.mly"
-      ( expecting 3 "identifier" )
-# 9840 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern_comma_list) in
-    Obj.repr(
-# 1616 "ml/parser.mly"
-      ( mkpat(Ppat_tuple(List.rev _1)) )
-# 9847 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1618 "ml/parser.mly"
-      ( mkpat_cons (rhs_loc 2) (ghpat(Ppat_tuple[_1;_3])) (symbol_rloc()) )
-# 9855 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1620 "ml/parser.mly"
-      ( expecting 3 "pattern" )
-# 9862 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1622 "ml/parser.mly"
-      ( mkpat(Ppat_or(_1, _3)) )
-# 9870 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1624 "ml/parser.mly"
-      ( expecting 3 "pattern" )
-# 9877 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1626 "ml/parser.mly"
-      ( mkpat_attrs (Ppat_exception _3) _2)
-# 9885 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 1628 "ml/parser.mly"
-      ( Pat.attr _1 _2 )
-# 9893 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern_gen) in
-    Obj.repr(
-# 1629 "ml/parser.mly"
-                ( _1 )
-# 9900 "ml/parser.ml"
-               : 'pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'val_ident) in
-    Obj.repr(
-# 1633 "ml/parser.mly"
-      ( mkpat(Ppat_alias(_1, mkrhs _3 3)) )
-# 9908 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    Obj.repr(
-# 1635 "ml/parser.mly"
-      ( expecting 3 "identifier" )
-# 9915 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern_no_exn_comma_list) in
-    Obj.repr(
-# 1637 "ml/parser.mly"
-      ( mkpat(Ppat_tuple(List.rev _1)) )
-# 9922 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1639 "ml/parser.mly"
-      ( mkpat_cons (rhs_loc 2) (ghpat(Ppat_tuple[_1;_3])) (symbol_rloc()) )
-# 9930 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    Obj.repr(
-# 1641 "ml/parser.mly"
-      ( expecting 3 "pattern" )
-# 9937 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1643 "ml/parser.mly"
-      ( mkpat(Ppat_or(_1, _3)) )
-# 9945 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    Obj.repr(
-# 1645 "ml/parser.mly"
-      ( expecting 3 "pattern" )
-# 9952 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'pattern_no_exn) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 1647 "ml/parser.mly"
-      ( Pat.attr _1 _2 )
-# 9960 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern_gen) in
-    Obj.repr(
-# 1648 "ml/parser.mly"
-                ( _1 )
-# 9967 "ml/parser.ml"
-               : 'pattern_no_exn))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_pattern) in
-    Obj.repr(
-# 1652 "ml/parser.mly"
-      ( _1 )
-# 9974 "ml/parser.ml"
-               : 'pattern_gen))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'constr_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1654 "ml/parser.mly"
-      ( mkpat(Ppat_construct(mkrhs _1 1, Some _2)) )
-# 9982 "ml/parser.ml"
-               : 'pattern_gen))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'name_tag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1656 "ml/parser.mly"
-      ( mkpat(Ppat_variant(_1, Some _2)) )
-# 9990 "ml/parser.ml"
-               : 'pattern_gen))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_pattern) in
-    Obj.repr(
-# 1658 "ml/parser.mly"
-      ( mkpat_attrs (Ppat_lazy _3) _2)
-# 9998 "ml/parser.ml"
-               : 'pattern_gen))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'val_ident) in
-    Obj.repr(
-# 1662 "ml/parser.mly"
-      ( mkpat(Ppat_var (mkrhs _1 1)) )
-# 10005 "ml/parser.ml"
-               : 'simple_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_pattern_not_ident) in
-    Obj.repr(
-# 1663 "ml/parser.mly"
-                             ( _1 )
-# 10012 "ml/parser.ml"
-               : 'simple_pattern))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1667 "ml/parser.mly"
-      ( mkpat(Ppat_any) )
-# 10018 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'signed_constant) in
-    Obj.repr(
-# 1669 "ml/parser.mly"
-      ( mkpat(Ppat_constant _1) )
-# 10025 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'signed_constant) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'signed_constant) in
-    Obj.repr(
-# 1671 "ml/parser.mly"
-      ( mkpat(Ppat_interval (_1, _3)) )
-# 10033 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'constr_longident) in
-    Obj.repr(
-# 1673 "ml/parser.mly"
-      ( mkpat(Ppat_construct(mkrhs _1 1, None)) )
-# 10040 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'name_tag) in
-    Obj.repr(
-# 1675 "ml/parser.mly"
-      ( mkpat(Ppat_variant(_1, None)) )
-# 10047 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'type_longident) in
-    Obj.repr(
-# 1677 "ml/parser.mly"
-      ( mkpat(Ppat_type (mkrhs _2 2)) )
-# 10054 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_delimited_pattern) in
-    Obj.repr(
-# 1679 "ml/parser.mly"
-      ( _1 )
-# 10061 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_delimited_pattern) in
-    Obj.repr(
-# 1681 "ml/parser.mly"
-      ( mkpat @@ Ppat_open(mkrhs _1 1, _3) )
-# 10069 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1683 "ml/parser.mly"
-    ( mkpat @@ Ppat_open(mkrhs _1 1, mkpat @@
-               Ppat_construct ( mkrhs (Lident "[]") 4, None)) )
-# 10077 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1686 "ml/parser.mly"
-      ( mkpat @@ Ppat_open( mkrhs _1 1, mkpat @@
-                 Ppat_construct ( mkrhs (Lident "()") 4, None) ) )
-# 10085 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 1689 "ml/parser.mly"
-      ( mkpat @@ Ppat_open (mkrhs _1 1, _4))
-# 10093 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 1691 "ml/parser.mly"
-      (unclosed "(" 3 ")" 5  )
-# 10101 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_longident) in
-    Obj.repr(
-# 1693 "ml/parser.mly"
-      ( expecting 4 "pattern" )
-# 10108 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 1695 "ml/parser.mly"
-      ( reloc_pat _2 )
-# 10115 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'pattern) in
-    Obj.repr(
-# 1697 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 3 )
-# 10122 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    Obj.repr(
-# 1699 "ml/parser.mly"
-      ( mkpat(Ppat_constraint(_2, _4)) )
-# 10130 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    Obj.repr(
-# 1701 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 5 )
-# 10138 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1703 "ml/parser.mly"
-      ( expecting 4 "type" )
-# 10145 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : string) in
-    Obj.repr(
-# 1705 "ml/parser.mly"
-      ( mkpat_attrs (Ppat_unpack (mkrhs _4 4)) _3 )
-# 10153 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 1707 "ml/parser.mly"
-      ( mkpat_attrs
-          (Ppat_constraint(mkpat(Ppat_unpack (mkrhs _4 4)),
-                           ghtyp(Ptyp_package _6)))
-          _3 )
-# 10165 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 1712 "ml/parser.mly"
-      ( unclosed "(" 1 ")" 7 )
-# 10174 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 1714 "ml/parser.mly"
-      ( mkpat(Ppat_extension _1) )
-# 10181 "ml/parser.ml"
-               : 'simple_pattern_not_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'lbl_pattern_list) in
-    Obj.repr(
-# 1719 "ml/parser.mly"
-    ( let (fields, closed) = _2 in mkpat(Ppat_record(fields, closed)) )
-# 10188 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'lbl_pattern_list) in
-    Obj.repr(
-# 1721 "ml/parser.mly"
-    ( unclosed "{" 1 "}" 3 )
-# 10195 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1723 "ml/parser.mly"
-    ( reloc_pat (mktailpat (rhs_loc 4) (List.rev _2)) )
-# 10203 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1725 "ml/parser.mly"
-    ( unclosed "[" 1 "]" 4 )
-# 10211 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1727 "ml/parser.mly"
-    ( mkpat(Ppat_array(List.rev _2)) )
-# 10219 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1729 "ml/parser.mly"
-    ( mkpat(Ppat_array []) )
-# 10225 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'opt_semi) in
-    Obj.repr(
-# 1731 "ml/parser.mly"
-    ( unclosed "[|" 1 "|]" 4 )
-# 10233 "ml/parser.ml"
-               : 'simple_delimited_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_comma_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1734 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10241 "ml/parser.ml"
-               : 'pattern_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1735 "ml/parser.mly"
-                                                ( [_3; _1] )
-# 10249 "ml/parser.ml"
-               : 'pattern_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    Obj.repr(
-# 1736 "ml/parser.mly"
-                                                ( expecting 3 "pattern" )
-# 10256 "ml/parser.ml"
-               : 'pattern_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn_comma_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1739 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10264 "ml/parser.ml"
-               : 'pattern_no_exn_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1740 "ml/parser.mly"
-                                                ( [_3; _1] )
-# 10272 "ml/parser.ml"
-               : 'pattern_no_exn_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_no_exn) in
-    Obj.repr(
-# 1741 "ml/parser.mly"
-                                                ( expecting 3 "pattern" )
-# 10279 "ml/parser.ml"
-               : 'pattern_no_exn_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1744 "ml/parser.mly"
-                                                ( [_1] )
-# 10286 "ml/parser.ml"
-               : 'pattern_semi_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'pattern_semi_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1745 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10294 "ml/parser.ml"
-               : 'pattern_semi_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_pattern) in
-    Obj.repr(
-# 1748 "ml/parser.mly"
-                ( [_1], Closed )
-# 10301 "ml/parser.ml"
-               : 'lbl_pattern_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'lbl_pattern) in
-    Obj.repr(
-# 1749 "ml/parser.mly"
-                     ( [_1], Closed )
-# 10308 "ml/parser.ml"
-               : 'lbl_pattern_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'lbl_pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'opt_semi) in
-    Obj.repr(
-# 1750 "ml/parser.mly"
-                                         ( [_1], Open )
-# 10316 "ml/parser.ml"
-               : 'lbl_pattern_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'lbl_pattern) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'lbl_pattern_list) in
-    Obj.repr(
-# 1752 "ml/parser.mly"
-      ( let (fields, closed) = _3 in _1 :: fields, closed )
-# 10324 "ml/parser.ml"
-               : 'lbl_pattern_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'label_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'opt_pattern_type_constraint) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 1756 "ml/parser.mly"
-     ( (mkrhs _1 1, mkpat_opt_constraint _4 _2) )
-# 10333 "ml/parser.ml"
-               : 'lbl_pattern))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'label_longident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'opt_pattern_type_constraint) in
-    Obj.repr(
-# 1758 "ml/parser.mly"
-     ( (mkrhs _1 1, mkpat_opt_constraint (pat_of_label _1 1) _2) )
-# 10341 "ml/parser.ml"
-               : 'lbl_pattern))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1761 "ml/parser.mly"
-                    ( Some _2 )
-# 10348 "ml/parser.ml"
-               : 'opt_pattern_type_constraint))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1762 "ml/parser.mly"
-                ( None )
-# 10354 "ml/parser.ml"
-               : 'opt_pattern_type_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'val_ident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1769 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Val.mk (mkrhs _3 3) _5 ~attrs:(attrs@_6)
-              ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-      , ext )
-# 10367 "ml/parser.ml"
-               : 'value_description))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string * string option) in
-    Obj.repr(
-# 1778 "ml/parser.mly"
-                                                ( [fst _1] )
-# 10374 "ml/parser.ml"
-               : 'primitive_declaration_body))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : string * string option) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'primitive_declaration_body) in
-    Obj.repr(
-# 1779 "ml/parser.mly"
-                                                ( fst _1 :: _2 )
-# 10382 "ml/parser.ml"
-               : 'primitive_declaration_body))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'val_ident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : 'core_type) in
-    let _7 = (Parsing.peek_val __caml_parser_env 1 : 'primitive_declaration_body) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1784 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        Val.mk (mkrhs _3 3) _5 ~prim:_7 ~attrs:(attrs@_8)
-              ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-      , ext )
-# 10396 "ml/parser.ml"
-               : 'primitive_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_declaration) in
-    Obj.repr(
-# 1794 "ml/parser.mly"
-      ( let (nonrec_flag, ty, ext) = _1 in (nonrec_flag, [ty], ext) )
-# 10403 "ml/parser.ml"
-               : 'type_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'type_declarations) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'and_type_declaration) in
-    Obj.repr(
-# 1796 "ml/parser.mly"
-      ( let (nonrec_flag, tys, ext) = _1 in (nonrec_flag, _2 :: tys, ext) )
-# 10411 "ml/parser.ml"
-               : 'type_declarations))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 6 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 5 : 'nonrec_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 4 : 'optional_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _6 = (Parsing.peek_val __caml_parser_env 2 : 'type_kind) in
-    let _7 = (Parsing.peek_val __caml_parser_env 1 : 'constraints) in
-    let _8 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1802 "ml/parser.mly"
-      ( let (kind, priv, manifest) = _6 in
-        let (ext, attrs) = _2 in
-        let ty =
-          Type.mk (mkrhs _5 5) ~params:_4 ~cstrs:(List.rev _7) ~kind
-            ~priv ?manifest ~attrs:(attrs@_8)
-            ~loc:(symbol_rloc ()) ~docs:(symbol_docs ())
-        in
-          (_3, ty, ext) )
-# 10431 "ml/parser.ml"
-               : 'type_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'optional_type_parameters) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'type_kind) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'constraints) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1814 "ml/parser.mly"
-      ( let (kind, priv, manifest) = _5 in
-          Type.mk (mkrhs _4 4) ~params:_3 ~cstrs:(List.rev _6)
-            ~kind ~priv ?manifest ~attrs:(_2@_7) ~loc:(symbol_rloc ())
-            ~text:(symbol_text ()) ~docs:(symbol_docs ()) )
-# 10446 "ml/parser.ml"
-               : 'and_type_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'constraints) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'constrain) in
-    Obj.repr(
-# 1820 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10454 "ml/parser.ml"
-               : 'constraints))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1821 "ml/parser.mly"
-                                                ( [] )
-# 10460 "ml/parser.ml"
-               : 'constraints))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1825 "ml/parser.mly"
-      ( (Ptype_abstract, Public, None) )
-# 10466 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1827 "ml/parser.mly"
-      ( (Ptype_abstract, Public, Some _2) )
-# 10473 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 1829 "ml/parser.mly"
-      ( (Ptype_abstract, Private, Some _3) )
-# 10480 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'constructor_declarations) in
-    Obj.repr(
-# 1831 "ml/parser.mly"
-      ( (Ptype_variant(List.rev _2), Public, None) )
-# 10487 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'constructor_declarations) in
-    Obj.repr(
-# 1833 "ml/parser.mly"
-      ( (Ptype_variant(List.rev _3), Private, None) )
-# 10494 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1835 "ml/parser.mly"
-      ( (Ptype_open, Public, None) )
-# 10500 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1837 "ml/parser.mly"
-      ( (Ptype_open, Private, None) )
-# 10506 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'private_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'label_declarations) in
-    Obj.repr(
-# 1839 "ml/parser.mly"
-      ( (Ptype_record _4, _2, None) )
-# 10514 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'core_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'private_flag) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'constructor_declarations) in
-    Obj.repr(
-# 1841 "ml/parser.mly"
-      ( (Ptype_variant(List.rev _5), _4, Some _2) )
-# 10523 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'core_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'private_flag) in
-    Obj.repr(
-# 1843 "ml/parser.mly"
-      ( (Ptype_open, _4, Some _2) )
-# 10531 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'core_type) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'private_flag) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'label_declarations) in
-    Obj.repr(
-# 1845 "ml/parser.mly"
-      ( (Ptype_record _6, _4, Some _2) )
-# 10540 "ml/parser.ml"
-               : 'type_kind))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1848 "ml/parser.mly"
-                                                ( [] )
-# 10546 "ml/parser.ml"
-               : 'optional_type_parameters))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'optional_type_parameter) in
-    Obj.repr(
-# 1849 "ml/parser.mly"
-                                                ( [_1] )
-# 10553 "ml/parser.ml"
-               : 'optional_type_parameters))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'optional_type_parameter_list) in
-    Obj.repr(
-# 1850 "ml/parser.mly"
-                                                ( List.rev _2 )
-# 10560 "ml/parser.ml"
-               : 'optional_type_parameters))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'type_variance) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'optional_type_variable) in
-    Obj.repr(
-# 1853 "ml/parser.mly"
-                                                ( _2, _1 )
-# 10568 "ml/parser.ml"
-               : 'optional_type_parameter))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'optional_type_parameter) in
-    Obj.repr(
-# 1856 "ml/parser.mly"
-                                                         ( [_1] )
-# 10575 "ml/parser.ml"
-               : 'optional_type_parameter_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'optional_type_parameter_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'optional_type_parameter) in
-    Obj.repr(
-# 1857 "ml/parser.mly"
-                                                                  ( _3 :: _1 )
-# 10583 "ml/parser.ml"
-               : 'optional_type_parameter_list))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 1860 "ml/parser.mly"
-                                                ( mktyp(Ptyp_var _2) )
-# 10590 "ml/parser.ml"
-               : 'optional_type_variable))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1861 "ml/parser.mly"
-                                                ( mktyp(Ptyp_any) )
-# 10596 "ml/parser.ml"
-               : 'optional_type_variable))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'type_variance) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'type_variable) in
-    Obj.repr(
-# 1866 "ml/parser.mly"
-                                                  ( _2, _1 )
-# 10604 "ml/parser.ml"
-               : 'type_parameter))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1869 "ml/parser.mly"
-                                                ( Invariant )
-# 10610 "ml/parser.ml"
-               : 'type_variance))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1870 "ml/parser.mly"
-                                                ( Covariant )
-# 10616 "ml/parser.ml"
-               : 'type_variance))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1871 "ml/parser.mly"
-                                                ( Contravariant )
-# 10622 "ml/parser.ml"
-               : 'type_variance))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 1874 "ml/parser.mly"
-                                                ( mktyp(Ptyp_var _2) )
-# 10629 "ml/parser.ml"
-               : 'type_variable))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_parameter) in
-    Obj.repr(
-# 1877 "ml/parser.mly"
-                                                ( [_1] )
-# 10636 "ml/parser.ml"
-               : 'type_parameter_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'type_parameter_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'type_parameter) in
-    Obj.repr(
-# 1878 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10644 "ml/parser.ml"
-               : 'type_parameter_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'constructor_declaration) in
-    Obj.repr(
-# 1881 "ml/parser.mly"
-                                                         ( [_1] )
-# 10651 "ml/parser.ml"
-               : 'constructor_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'bar_constructor_declaration) in
-    Obj.repr(
-# 1882 "ml/parser.mly"
-                                                         ( [_1] )
-# 10658 "ml/parser.ml"
-               : 'constructor_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'constructor_declarations) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'bar_constructor_declaration) in
-    Obj.repr(
-# 1883 "ml/parser.mly"
-                                                         ( _2 :: _1 )
-# 10666 "ml/parser.ml"
-               : 'constructor_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'constr_ident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'generalized_constructor_arguments) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 1887 "ml/parser.mly"
-      (
-       let args,res = _2 in
-       Type.constructor (mkrhs _1 1) ~args ?res ~attrs:_3
-         ~loc:(symbol_rloc()) ~info:(symbol_info ())
-      )
-# 10679 "ml/parser.ml"
-               : 'constructor_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'constr_ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'generalized_constructor_arguments) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 1895 "ml/parser.mly"
-      (
-       let args,res = _3 in
-       Type.constructor (mkrhs _2 2) ~args ?res ~attrs:_4
-         ~loc:(symbol_rloc()) ~info:(symbol_info ())
-      )
-# 10692 "ml/parser.ml"
-               : 'bar_constructor_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'sig_exception_declaration) in
-    Obj.repr(
-# 1902 "ml/parser.mly"
-                                                 ( _1 )
-# 10699 "ml/parser.ml"
-               : 'str_exception_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 4 : 'constr_ident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'constr_longident) in
-    let _6 = (Parsing.peek_val __caml_parser_env 1 : 'attributes) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1905 "ml/parser.mly"
-      ( let (ext,attrs) = _2 in
-        Te.rebind (mkrhs _3 3) (mkrhs _5 5) ~attrs:(attrs @ _6 @ _7)
-          ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-        , ext )
-# 10713 "ml/parser.ml"
-               : 'str_exception_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'constr_ident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'generalized_constructor_arguments) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'attributes) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1913 "ml/parser.mly"
-      ( let args, res = _4 in
-        let (ext,attrs) = _2 in
-          Te.decl (mkrhs _3 3) ~args ?res ~attrs:(attrs @ _5 @ _6)
-            ~loc:(symbol_rloc()) ~docs:(symbol_docs ())
-        , ext )
-# 10728 "ml/parser.ml"
-               : 'sig_exception_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'constr_ident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'generalized_constructor_arguments) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 1921 "ml/parser.mly"
-      ( let args, res = _2 in
-        Te.decl (mkrhs _1 1) ~args ?res ~attrs:_3 ~loc:(symbol_rloc()) )
-# 10738 "ml/parser.ml"
-               : 'let_exception_declaration))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 1925 "ml/parser.mly"
-                                  ( (Pcstr_tuple [],None) )
-# 10744 "ml/parser.ml"
-               : 'generalized_constructor_arguments))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'constructor_arguments) in
-    Obj.repr(
-# 1926 "ml/parser.mly"
-                                  ( (_2,None) )
-# 10751 "ml/parser.ml"
-               : 'generalized_constructor_arguments))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'constructor_arguments) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 1928 "ml/parser.mly"
-                                  ( (_2,Some _4) )
-# 10759 "ml/parser.ml"
-               : 'generalized_constructor_arguments))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 1930 "ml/parser.mly"
-                                  ( (Pcstr_tuple [],Some _2) )
-# 10766 "ml/parser.ml"
-               : 'generalized_constructor_arguments))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_list) in
-    Obj.repr(
-# 1934 "ml/parser.mly"
-                                     ( Pcstr_tuple (List.rev _1) )
-# 10773 "ml/parser.ml"
-               : 'constructor_arguments))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'label_declarations) in
-    Obj.repr(
-# 1935 "ml/parser.mly"
-                                     ( Pcstr_record _2 )
-# 10780 "ml/parser.ml"
-               : 'constructor_arguments))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'label_declaration) in
-    Obj.repr(
-# 1938 "ml/parser.mly"
-                                                ( [_1] )
-# 10787 "ml/parser.ml"
-               : 'label_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'label_declaration_semi) in
-    Obj.repr(
-# 1939 "ml/parser.mly"
-                                                ( [_1] )
-# 10794 "ml/parser.ml"
-               : 'label_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'label_declaration_semi) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'label_declarations) in
-    Obj.repr(
-# 1940 "ml/parser.mly"
-                                                ( _1 :: _2 )
-# 10802 "ml/parser.ml"
-               : 'label_declarations))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mutable_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'label) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'poly_type_no_attr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 1944 "ml/parser.mly"
-      (
-       Type.field (mkrhs _2 2) _4 ~mut:_1 ~attrs:_5
-         ~loc:(symbol_rloc()) ~info:(symbol_info ())
-      )
-# 10815 "ml/parser.ml"
-               : 'label_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 6 : 'mutable_flag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 5 : 'label) in
-    let _4 = (Parsing.peek_val __caml_parser_env 3 : 'poly_type_no_attr) in
-    let _5 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _7 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 1951 "ml/parser.mly"
-      (
-       let info =
-         match rhs_info 5 with
-         | Some _ as info_before_semi -> info_before_semi
-         | None -> symbol_info ()
-       in
-       Type.field (mkrhs _2 2) _4 ~mut:_1 ~attrs:(_5 @ _7)
-         ~loc:(symbol_rloc()) ~info
-      )
-# 10834 "ml/parser.ml"
-               : 'label_declaration_semi))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 7 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'nonrec_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : 'optional_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 4 : 'type_longident) in
-    let _7 = (Parsing.peek_val __caml_parser_env 2 : 'private_flag) in
-    let _8 = (Parsing.peek_val __caml_parser_env 1 : 'str_extension_constructors) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1967 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        if _3 <> Recursive then not_expecting 3 "nonrec flag";
-        Te.mk (mkrhs _5 5) (List.rev _8) ~params:_4 ~priv:_7
-          ~attrs:(attrs@_9) ~docs:(symbol_docs ())
-        , ext )
-# 10851 "ml/parser.ml"
-               : 'str_type_extension))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 7 : 'ext_attributes) in
-    let _3 = (Parsing.peek_val __caml_parser_env 6 : 'nonrec_flag) in
-    let _4 = (Parsing.peek_val __caml_parser_env 5 : 'optional_type_parameters) in
-    let _5 = (Parsing.peek_val __caml_parser_env 4 : 'type_longident) in
-    let _7 = (Parsing.peek_val __caml_parser_env 2 : 'private_flag) in
-    let _8 = (Parsing.peek_val __caml_parser_env 1 : 'sig_extension_constructors) in
-    let _9 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 1976 "ml/parser.mly"
-      ( let (ext, attrs) = _2 in
-        if _3 <> Recursive then not_expecting 3 "nonrec flag";
-        Te.mk (mkrhs _5 5) (List.rev _8) ~params:_4 ~priv:_7
-          ~attrs:(attrs @ _9) ~docs:(symbol_docs ())
-        , ext )
-# 10868 "ml/parser.ml"
-               : 'sig_type_extension))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension_constructor_declaration) in
-    Obj.repr(
-# 1983 "ml/parser.mly"
-                                                          ( [_1] )
-# 10875 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_declaration) in
-    Obj.repr(
-# 1984 "ml/parser.mly"
-                                                          ( [_1] )
-# 10882 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension_constructor_rebind) in
-    Obj.repr(
-# 1985 "ml/parser.mly"
-                                                          ( [_1] )
-# 10889 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_rebind) in
-    Obj.repr(
-# 1986 "ml/parser.mly"
-                                                          ( [_1] )
-# 10896 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'str_extension_constructors) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_declaration) in
-    Obj.repr(
-# 1988 "ml/parser.mly"
-      ( _2 :: _1 )
-# 10904 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'str_extension_constructors) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_rebind) in
-    Obj.repr(
-# 1990 "ml/parser.mly"
-      ( _2 :: _1 )
-# 10912 "ml/parser.ml"
-               : 'str_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension_constructor_declaration) in
-    Obj.repr(
-# 1993 "ml/parser.mly"
-                                                          ( [_1] )
-# 10919 "ml/parser.ml"
-               : 'sig_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_declaration) in
-    Obj.repr(
-# 1994 "ml/parser.mly"
-                                                          ( [_1] )
-# 10926 "ml/parser.ml"
-               : 'sig_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'sig_extension_constructors) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'bar_extension_constructor_declaration) in
-    Obj.repr(
-# 1996 "ml/parser.mly"
-      ( _2 :: _1 )
-# 10934 "ml/parser.ml"
-               : 'sig_extension_constructors))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'constr_ident) in
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'generalized_constructor_arguments) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2000 "ml/parser.mly"
-      ( let args, res = _2 in
-        Te.decl (mkrhs _1 1) ~args ?res ~attrs:_3
-          ~loc:(symbol_rloc()) ~info:(symbol_info ()) )
-# 10945 "ml/parser.ml"
-               : 'extension_constructor_declaration))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'constr_ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'generalized_constructor_arguments) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2006 "ml/parser.mly"
-      ( let args, res = _3 in
-        Te.decl (mkrhs _2 2) ~args ?res ~attrs:_4
-           ~loc:(symbol_rloc()) ~info:(symbol_info ()) )
-# 10956 "ml/parser.ml"
-               : 'bar_extension_constructor_declaration))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'constr_ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'constr_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2012 "ml/parser.mly"
-      ( Te.rebind (mkrhs _1 1) (mkrhs _3 3) ~attrs:_4
-          ~loc:(symbol_rloc()) ~info:(symbol_info ()) )
-# 10966 "ml/parser.ml"
-               : 'extension_constructor_rebind))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'constr_ident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'constr_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2017 "ml/parser.mly"
-      ( Te.rebind (mkrhs _2 2) (mkrhs _4 4) ~attrs:_5
-          ~loc:(symbol_rloc()) ~info:(symbol_info ()) )
-# 10976 "ml/parser.ml"
-               : 'bar_extension_constructor_rebind))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'with_constraint) in
-    Obj.repr(
-# 2024 "ml/parser.mly"
-                                                ( [_1] )
-# 10983 "ml/parser.ml"
-               : 'with_constraints))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'with_constraints) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'with_constraint) in
-    Obj.repr(
-# 2025 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 10991 "ml/parser.ml"
-               : 'with_constraints))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'optional_type_parameters) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'label_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'with_type_binder) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'core_type_no_attr) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'constraints) in
-    Obj.repr(
-# 2030 "ml/parser.mly"
-      ( Pwith_type
-          (mkrhs _3 3,
-           (Type.mk (mkrhs (Longident.last _3) 3)
-              ~params:_2
-              ~cstrs:(List.rev _6)
-              ~manifest:_5
-              ~priv:_4
-              ~loc:(symbol_rloc()))) )
-# 11009 "ml/parser.ml"
-               : 'with_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'optional_type_parameters) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'label_longident) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2041 "ml/parser.mly"
-      ( Pwith_typesubst
-         (mkrhs _3 3,
-           (Type.mk (mkrhs (Longident.last _3) 3)
-             ~params:_2
-             ~manifest:_5
-             ~loc:(symbol_rloc()))) )
-# 11023 "ml/parser.ml"
-               : 'with_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'mod_ext_longident) in
-    Obj.repr(
-# 2048 "ml/parser.mly"
-      ( Pwith_module (mkrhs _2 2, mkrhs _4 4) )
-# 11031 "ml/parser.ml"
-               : 'with_constraint))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'mod_ext_longident) in
-    Obj.repr(
-# 2050 "ml/parser.mly"
-      ( Pwith_modsubst (mkrhs _2 2, mkrhs _4 4) )
-# 11039 "ml/parser.ml"
-               : 'with_constraint))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2053 "ml/parser.mly"
-                   ( Public )
-# 11045 "ml/parser.ml"
-               : 'with_type_binder))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2054 "ml/parser.mly"
-                   ( Private )
-# 11051 "ml/parser.ml"
-               : 'with_type_binder))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2060 "ml/parser.mly"
-                                                ( [mkrhs _2 2] )
-# 11058 "ml/parser.ml"
-               : 'typevar_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'typevar_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2061 "ml/parser.mly"
-                                                ( mkrhs _3 3 :: _1 )
-# 11066 "ml/parser.ml"
-               : 'typevar_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 2065 "ml/parser.mly"
-          ( _1 )
-# 11073 "ml/parser.ml"
-               : 'poly_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'typevar_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 2067 "ml/parser.mly"
-          ( mktyp(Ptyp_poly(List.rev _1, _3)) )
-# 11081 "ml/parser.ml"
-               : 'poly_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2071 "ml/parser.mly"
-          ( _1 )
-# 11088 "ml/parser.ml"
-               : 'poly_type_no_attr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'typevar_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2073 "ml/parser.mly"
-          ( mktyp(Ptyp_poly(List.rev _1, _3)) )
-# 11096 "ml/parser.ml"
-               : 'poly_type_no_attr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2080 "ml/parser.mly"
-      ( _1 )
-# 11103 "ml/parser.ml"
-               : 'core_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'core_type) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attribute) in
-    Obj.repr(
-# 2082 "ml/parser.mly"
-      ( Typ.attr _1 _2 )
-# 11111 "ml/parser.ml"
-               : 'core_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type2) in
-    Obj.repr(
-# 2086 "ml/parser.mly"
-      ( _1 )
-# 11118 "ml/parser.ml"
-               : 'core_type_no_attr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'core_type2) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2088 "ml/parser.mly"
-      ( mktyp(Ptyp_alias(_1, _4)) )
-# 11126 "ml/parser.ml"
-               : 'core_type_no_attr))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type_or_tuple) in
-    Obj.repr(
-# 2092 "ml/parser.mly"
-      ( _1 )
-# 11133 "ml/parser.ml"
-               : 'core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'core_type2) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'core_type2) in
-    Obj.repr(
-# 2094 "ml/parser.mly"
-      ( let param = extra_rhs_core_type _4 ~pos:4 in
-        mktyp (Ptyp_arrow(Optional _2 , param, _6)) )
-# 11143 "ml/parser.ml"
-               : 'core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'core_type2) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'core_type2) in
-    Obj.repr(
-# 2097 "ml/parser.mly"
-      ( let param = extra_rhs_core_type _2 ~pos:2 in
-        mktyp(Ptyp_arrow(Optional _1 , param, _4))
-      )
-# 11154 "ml/parser.ml"
-               : 'core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : string) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'core_type2) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'core_type2) in
-    Obj.repr(
-# 2101 "ml/parser.mly"
-      ( let param = extra_rhs_core_type _3 ~pos:3 in
-        mktyp(Ptyp_arrow(Labelled _1, param, _5)) )
-# 11164 "ml/parser.ml"
-               : 'core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'core_type2) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type2) in
-    Obj.repr(
-# 2104 "ml/parser.mly"
-      ( let param = extra_rhs_core_type _1 ~pos:1 in
-        mktyp(Ptyp_arrow(Nolabel, param, _3)) )
-# 11173 "ml/parser.ml"
-               : 'core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type2) in
-    Obj.repr(
-# 2110 "ml/parser.mly"
-      ( _1 )
-# 11180 "ml/parser.ml"
-               : 'simple_core_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'core_type_comma_list) in
-    Obj.repr(
-# 2112 "ml/parser.mly"
-      ( match _2 with [sty] -> sty | _ -> raise Parse_error )
-# 11187 "ml/parser.ml"
-               : 'simple_core_type))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2117 "ml/parser.mly"
-      ( mktyp(Ptyp_var _2) )
-# 11194 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2119 "ml/parser.mly"
-      ( mktyp(Ptyp_any) )
-# 11200 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'type_longident) in
-    Obj.repr(
-# 2121 "ml/parser.mly"
-      ( mktyp(Ptyp_constr(mkrhs _1 1, [])) )
-# 11207 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'simple_core_type2) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'type_longident) in
-    Obj.repr(
-# 2123 "ml/parser.mly"
-      ( mktyp(Ptyp_constr(mkrhs _2 2, [_1])) )
-# 11215 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'core_type_comma_list) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'type_longident) in
-    Obj.repr(
-# 2125 "ml/parser.mly"
-      ( mktyp(Ptyp_constr(mkrhs _4 4, List.rev _2)) )
-# 11223 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'meth_list) in
-    Obj.repr(
-# 2127 "ml/parser.mly"
-      ( let (f, c) = _2 in mktyp(Ptyp_object (f, c)) )
-# 11230 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2129 "ml/parser.mly"
-      ( mktyp(Ptyp_object ([], Closed)) )
-# 11236 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'class_longident) in
-    Obj.repr(
-# 2131 "ml/parser.mly"
-      ( mktyp(Ptyp_class(mkrhs _2 2, [])) )
-# 11243 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type2) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'class_longident) in
-    Obj.repr(
-# 2133 "ml/parser.mly"
-      ( mktyp(Ptyp_class(mkrhs _3 3, [_1])) )
-# 11251 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'core_type_comma_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'class_longident) in
-    Obj.repr(
-# 2135 "ml/parser.mly"
-      ( mktyp(Ptyp_class(mkrhs _5 5, List.rev _2)) )
-# 11259 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'tag_field) in
-    Obj.repr(
-# 2137 "ml/parser.mly"
-      ( mktyp(Ptyp_variant([_2], Closed, None)) )
-# 11266 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'row_field_list) in
-    Obj.repr(
-# 2143 "ml/parser.mly"
-      ( mktyp(Ptyp_variant(List.rev _3, Closed, None)) )
-# 11273 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 3 : 'row_field) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'row_field_list) in
-    Obj.repr(
-# 2145 "ml/parser.mly"
-      ( mktyp(Ptyp_variant(_2 :: List.rev _4, Closed, None)) )
-# 11281 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'opt_bar) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'row_field_list) in
-    Obj.repr(
-# 2147 "ml/parser.mly"
-      ( mktyp(Ptyp_variant(List.rev _3, Open, None)) )
-# 11289 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2149 "ml/parser.mly"
-      ( mktyp(Ptyp_variant([], Open, None)) )
-# 11295 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'opt_bar) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'row_field_list) in
-    Obj.repr(
-# 2151 "ml/parser.mly"
-      ( mktyp(Ptyp_variant(List.rev _3, Closed, Some [])) )
-# 11303 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 4 : 'opt_bar) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'row_field_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 1 : 'name_tag_list) in
-    Obj.repr(
-# 2153 "ml/parser.mly"
-      ( mktyp(Ptyp_variant(List.rev _3, Closed, Some (List.rev _5))) )
-# 11312 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'ext_attributes) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'package_type) in
-    Obj.repr(
-# 2155 "ml/parser.mly"
-      ( mktyp_attrs (Ptyp_package _4) _3 )
-# 11320 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'extension) in
-    Obj.repr(
-# 2157 "ml/parser.mly"
-      ( mktyp (Ptyp_extension _1) )
-# 11327 "ml/parser.ml"
-               : 'simple_core_type2))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'module_type) in
-    Obj.repr(
-# 2160 "ml/parser.mly"
-                ( package_type_of_module_type _1 )
-# 11334 "ml/parser.ml"
-               : 'package_type))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'row_field) in
-    Obj.repr(
-# 2163 "ml/parser.mly"
-                                                ( [_1] )
-# 11341 "ml/parser.ml"
-               : 'row_field_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'row_field_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'row_field) in
-    Obj.repr(
-# 2164 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 11349 "ml/parser.ml"
-               : 'row_field_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'tag_field) in
-    Obj.repr(
-# 2167 "ml/parser.mly"
-                                                ( _1 )
-# 11356 "ml/parser.ml"
-               : 'row_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 2168 "ml/parser.mly"
-                                                ( Rinherit _1 )
-# 11363 "ml/parser.ml"
-               : 'row_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'name_tag) in
-    let _3 = (Parsing.peek_val __caml_parser_env 2 : 'opt_ampersand) in
-    let _4 = (Parsing.peek_val __caml_parser_env 1 : 'amper_type_list) in
-    let _5 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2172 "ml/parser.mly"
-      ( Rtag (mkrhs _1 1, add_info_attrs (symbol_info ()) _5,
-               _3, List.rev _4) )
-# 11374 "ml/parser.ml"
-               : 'tag_field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'name_tag) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2175 "ml/parser.mly"
-      ( Rtag (mkrhs _1 1, add_info_attrs (symbol_info ()) _2, true, []) )
-# 11382 "ml/parser.ml"
-               : 'tag_field))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2178 "ml/parser.mly"
-                                                ( true )
-# 11388 "ml/parser.ml"
-               : 'opt_ampersand))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2179 "ml/parser.mly"
-                                                ( false )
-# 11394 "ml/parser.ml"
-               : 'opt_ampersand))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2182 "ml/parser.mly"
-                                                ( [_1] )
-# 11401 "ml/parser.ml"
-               : 'amper_type_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'amper_type_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_no_attr) in
-    Obj.repr(
-# 2183 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 11409 "ml/parser.ml"
-               : 'amper_type_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'name_tag) in
-    Obj.repr(
-# 2186 "ml/parser.mly"
-                                                ( [_1] )
-# 11416 "ml/parser.ml"
-               : 'name_tag_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'name_tag_list) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'name_tag) in
-    Obj.repr(
-# 2187 "ml/parser.mly"
-                                                ( _2 :: _1 )
-# 11424 "ml/parser.ml"
-               : 'name_tag_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 2190 "ml/parser.mly"
-                     ( _1 )
-# 11431 "ml/parser.ml"
-               : 'simple_core_type_or_tuple))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'simple_core_type) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type_list) in
-    Obj.repr(
-# 2192 "ml/parser.mly"
-      ( mktyp(Ptyp_tuple(_1 :: List.rev _3)) )
-# 11439 "ml/parser.ml"
-               : 'simple_core_type_or_tuple))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 2195 "ml/parser.mly"
-                                                ( [_1] )
-# 11446 "ml/parser.ml"
-               : 'core_type_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'core_type_comma_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 2196 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 11454 "ml/parser.ml"
-               : 'core_type_comma_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 2199 "ml/parser.mly"
-                                                ( [_1] )
-# 11461 "ml/parser.ml"
-               : 'core_type_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'core_type_list) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 2200 "ml/parser.mly"
-                                                ( _3 :: _1 )
-# 11469 "ml/parser.ml"
-               : 'core_type_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'field_semi) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'meth_list) in
-    Obj.repr(
-# 2203 "ml/parser.mly"
-                                                ( let (f, c) = _2 in (_1 :: f, c) )
-# 11477 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'inherit_field_semi) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'meth_list) in
-    Obj.repr(
-# 2204 "ml/parser.mly"
-                                                ( let (f, c) = _2 in (_1 :: f, c) )
-# 11485 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'field_semi) in
-    Obj.repr(
-# 2205 "ml/parser.mly"
-                                                ( [_1], Closed )
-# 11492 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'field) in
-    Obj.repr(
-# 2206 "ml/parser.mly"
-                                                ( [_1], Closed )
-# 11499 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'inherit_field_semi) in
-    Obj.repr(
-# 2207 "ml/parser.mly"
-                                                ( [_1], Closed )
-# 11506 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'simple_core_type) in
-    Obj.repr(
-# 2208 "ml/parser.mly"
-                                                ( [Oinherit _1], Closed )
-# 11513 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2209 "ml/parser.mly"
-                                                ( [], Open )
-# 11519 "ml/parser.ml"
-               : 'meth_list))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'label) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'poly_type_no_attr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2213 "ml/parser.mly"
-    ( Otag (mkrhs _1 1, add_info_attrs (symbol_info ()) _4, _3) )
-# 11528 "ml/parser.ml"
-               : 'field))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 5 : 'label) in
-    let _3 = (Parsing.peek_val __caml_parser_env 3 : 'poly_type_no_attr) in
-    let _4 = (Parsing.peek_val __caml_parser_env 2 : 'attributes) in
-    let _6 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2218 "ml/parser.mly"
-    ( let info =
-        match rhs_info 4 with
-        | Some _ as info_before_semi -> info_before_semi
-        | None -> symbol_info ()
-      in
-      ( Otag (mkrhs _1 1, add_info_attrs info (_4 @ _6), _3)) )
-# 11543 "ml/parser.ml"
-               : 'field_semi))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'simple_core_type) in
-    Obj.repr(
-# 2227 "ml/parser.mly"
-                        ( Oinherit _1 )
-# 11550 "ml/parser.ml"
-               : 'inherit_field_semi))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2230 "ml/parser.mly"
-                                                ( _1 )
-# 11557 "ml/parser.ml"
-               : 'label))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2236 "ml/parser.mly"
-                 ( let (n, m) = _1 in Pconst_integer (n, m) )
-# 11564 "ml/parser.ml"
-               : 'constant))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : char) in
-    Obj.repr(
-# 2237 "ml/parser.mly"
-                 ( Pconst_char _1 )
-# 11571 "ml/parser.ml"
-               : 'constant))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string * string option) in
-    Obj.repr(
-# 2238 "ml/parser.mly"
-                 ( let (s, d) = _1 in Pconst_string (s, d) )
-# 11578 "ml/parser.ml"
-               : 'constant))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2239 "ml/parser.mly"
-                 ( let (f, m) = _1 in Pconst_float (f, m) )
-# 11585 "ml/parser.ml"
-               : 'constant))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'constant) in
-    Obj.repr(
-# 2242 "ml/parser.mly"
-                 ( _1 )
-# 11592 "ml/parser.ml"
-               : 'signed_constant))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2243 "ml/parser.mly"
-                 ( let (n, m) = _2 in Pconst_integer("-" ^ n, m) )
-# 11599 "ml/parser.ml"
-               : 'signed_constant))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2244 "ml/parser.mly"
-                 ( let (f, m) = _2 in Pconst_float("-" ^ f, m) )
-# 11606 "ml/parser.ml"
-               : 'signed_constant))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2245 "ml/parser.mly"
-                 ( let (n, m) = _2 in Pconst_integer (n, m) )
-# 11613 "ml/parser.ml"
-               : 'signed_constant))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2246 "ml/parser.mly"
-                 ( let (f, m) = _2 in Pconst_float(f, m) )
-# 11620 "ml/parser.ml"
-               : 'signed_constant))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2252 "ml/parser.mly"
-                                                ( _1 )
-# 11627 "ml/parser.ml"
-               : 'ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2253 "ml/parser.mly"
-                                                ( _1 )
-# 11634 "ml/parser.ml"
-               : 'ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2256 "ml/parser.mly"
-                                                ( _1 )
-# 11641 "ml/parser.ml"
-               : 'val_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'operator) in
-    Obj.repr(
-# 2257 "ml/parser.mly"
-                                                ( _2 )
-# 11648 "ml/parser.ml"
-               : 'val_ident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'operator) in
-    Obj.repr(
-# 2258 "ml/parser.mly"
-                                                ( unclosed "(" 1 ")" 3 )
-# 11655 "ml/parser.ml"
-               : 'val_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2259 "ml/parser.mly"
-                                                ( expecting 2 "operator" )
-# 11661 "ml/parser.ml"
-               : 'val_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2260 "ml/parser.mly"
-                                                ( expecting 3 "module-expr" )
-# 11667 "ml/parser.ml"
-               : 'val_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2263 "ml/parser.mly"
-                                                ( _1 )
-# 11674 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2264 "ml/parser.mly"
-                                                ( _1 )
-# 11681 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2265 "ml/parser.mly"
-                                                ( _1 )
-# 11688 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2266 "ml/parser.mly"
-                                                ( _1 )
-# 11695 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2267 "ml/parser.mly"
-                                                ( _1 )
-# 11702 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2268 "ml/parser.mly"
-                                                ( _1 )
-# 11709 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    Obj.repr(
-# 2269 "ml/parser.mly"
-                                                ( "."^ _1 ^"()" )
-# 11716 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    Obj.repr(
-# 2270 "ml/parser.mly"
-                                                ( "."^ _1 ^ "()<-" )
-# 11723 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    Obj.repr(
-# 2271 "ml/parser.mly"
-                                                ( "."^ _1 ^"[]" )
-# 11730 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    Obj.repr(
-# 2272 "ml/parser.mly"
-                                                ( "."^ _1 ^ "[]<-" )
-# 11737 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : string) in
-    Obj.repr(
-# 2273 "ml/parser.mly"
-                                                ( "."^ _1 ^"{}" )
-# 11744 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : string) in
-    Obj.repr(
-# 2274 "ml/parser.mly"
-                                                ( "."^ _1 ^ "{}<-" )
-# 11751 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2275 "ml/parser.mly"
-                                                ( _1 )
-# 11758 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2276 "ml/parser.mly"
-                                                ( "!" )
-# 11764 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2277 "ml/parser.mly"
-                                                ( "+" )
-# 11770 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2278 "ml/parser.mly"
-                                                ( "+." )
-# 11776 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2279 "ml/parser.mly"
-                                                ( "-" )
-# 11782 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2280 "ml/parser.mly"
-                                                ( "-." )
-# 11788 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2281 "ml/parser.mly"
-                                                ( "*" )
-# 11794 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2282 "ml/parser.mly"
-                                                ( "=" )
-# 11800 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2283 "ml/parser.mly"
-                                                ( "<" )
-# 11806 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2284 "ml/parser.mly"
-                                                ( ">" )
-# 11812 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2285 "ml/parser.mly"
-                                                ( "or" )
-# 11818 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2286 "ml/parser.mly"
-                                                ( "||" )
-# 11824 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2287 "ml/parser.mly"
-                                                ( "&" )
-# 11830 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2288 "ml/parser.mly"
-                                                ( "&&" )
-# 11836 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2289 "ml/parser.mly"
-                                                ( ":=" )
-# 11842 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2290 "ml/parser.mly"
-                                                ( "+=" )
-# 11848 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2291 "ml/parser.mly"
-                                                ( "%" )
-# 11854 "ml/parser.ml"
-               : 'operator))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2294 "ml/parser.mly"
-                                                ( _1 )
-# 11861 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2295 "ml/parser.mly"
-                                                ( "[]" )
-# 11867 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2296 "ml/parser.mly"
-                                                ( "()" )
-# 11873 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2297 "ml/parser.mly"
-                                                ( "::" )
-# 11879 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2298 "ml/parser.mly"
-                                                ( "false" )
-# 11885 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2299 "ml/parser.mly"
-                                                ( "true" )
-# 11891 "ml/parser.ml"
-               : 'constr_ident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'val_ident) in
-    Obj.repr(
-# 2303 "ml/parser.mly"
-                                                ( Lident _1 )
-# 11898 "ml/parser.ml"
-               : 'val_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'val_ident) in
-    Obj.repr(
-# 2304 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 11906 "ml/parser.ml"
-               : 'val_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'mod_longident) in
-    Obj.repr(
-# 2307 "ml/parser.mly"
-                                                ( _1 )
-# 11913 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 4 : 'mod_longident) in
-    Obj.repr(
-# 2308 "ml/parser.mly"
-                                                ( Ldot(_1,"::") )
-# 11920 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2309 "ml/parser.mly"
-                                                ( Lident "[]" )
-# 11926 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2310 "ml/parser.mly"
-                                                ( Lident "()" )
-# 11932 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2311 "ml/parser.mly"
-                                                ( Lident "::" )
-# 11938 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2312 "ml/parser.mly"
-                                                ( Lident "false" )
-# 11944 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2313 "ml/parser.mly"
-                                                ( Lident "true" )
-# 11950 "ml/parser.ml"
-               : 'constr_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2316 "ml/parser.mly"
-                                                ( Lident _1 )
-# 11957 "ml/parser.ml"
-               : 'label_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2317 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 11965 "ml/parser.ml"
-               : 'label_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2320 "ml/parser.mly"
-                                                ( Lident _1 )
-# 11972 "ml/parser.ml"
-               : 'type_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_ext_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2321 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 11980 "ml/parser.ml"
-               : 'type_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2324 "ml/parser.mly"
-                                                ( Lident _1 )
-# 11987 "ml/parser.ml"
-               : 'mod_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2325 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 11995 "ml/parser.ml"
-               : 'mod_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2328 "ml/parser.mly"
-                                                ( Lident _1 )
-# 12002 "ml/parser.ml"
-               : 'mod_ext_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_ext_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2329 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 12010 "ml/parser.ml"
-               : 'mod_ext_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 3 : 'mod_ext_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'mod_ext_longident) in
-    Obj.repr(
-# 2330 "ml/parser.mly"
-                                                      ( lapply _1 _3 )
-# 12018 "ml/parser.ml"
-               : 'mod_ext_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2333 "ml/parser.mly"
-                                                ( Lident _1 )
-# 12025 "ml/parser.ml"
-               : 'mty_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_ext_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2334 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 12033 "ml/parser.ml"
-               : 'mty_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2337 "ml/parser.mly"
-                                                ( Lident _1 )
-# 12040 "ml/parser.ml"
-               : 'clty_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_ext_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2338 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 12048 "ml/parser.ml"
-               : 'clty_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2341 "ml/parser.mly"
-                                                ( Lident _1 )
-# 12055 "ml/parser.ml"
-               : 'class_longident))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'mod_longident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2342 "ml/parser.mly"
-                                                ( Ldot(_1, _3) )
-# 12063 "ml/parser.ml"
-               : 'class_longident))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2348 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_none) )
-# 12070 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string * string option) in
-    Obj.repr(
-# 2349 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_string (fst _3)) )
-# 12078 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : string * char option) in
-    Obj.repr(
-# 2350 "ml/parser.mly"
-                               ( let (n, m) = _3 in
-                                  Ptop_dir(_2, Pdir_int (n ,m)) )
-# 12087 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'val_longident) in
-    Obj.repr(
-# 2352 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_ident _3) )
-# 12095 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'mod_longident) in
-    Obj.repr(
-# 2353 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_ident _3) )
-# 12103 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    Obj.repr(
-# 2354 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_bool false) )
-# 12110 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'ident) in
-    Obj.repr(
-# 2355 "ml/parser.mly"
-                               ( Ptop_dir(_2, Pdir_bool true) )
-# 12117 "ml/parser.ml"
-               : 'toplevel_directive))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'ident) in
-    Obj.repr(
-# 2361 "ml/parser.mly"
-                                                ( _2 )
-# 12124 "ml/parser.ml"
-               : 'name_tag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2364 "ml/parser.mly"
-                                                ( Nonrecursive )
-# 12130 "ml/parser.ml"
-               : 'rec_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2365 "ml/parser.mly"
-                                                ( Recursive )
-# 12136 "ml/parser.ml"
-               : 'rec_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2368 "ml/parser.mly"
-                                                ( Recursive )
-# 12142 "ml/parser.ml"
-               : 'nonrec_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2369 "ml/parser.mly"
-                                                ( Nonrecursive )
-# 12148 "ml/parser.ml"
-               : 'nonrec_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2372 "ml/parser.mly"
-                                                ( Upto )
-# 12154 "ml/parser.ml"
-               : 'direction_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2373 "ml/parser.mly"
-                                                ( Downto )
-# 12160 "ml/parser.ml"
-               : 'direction_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2376 "ml/parser.mly"
-                                                ( Public )
-# 12166 "ml/parser.ml"
-               : 'private_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2377 "ml/parser.mly"
-                                                ( Private )
-# 12172 "ml/parser.ml"
-               : 'private_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2380 "ml/parser.mly"
-                                                ( Immutable )
-# 12178 "ml/parser.ml"
-               : 'mutable_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2381 "ml/parser.mly"
-                                                ( Mutable )
-# 12184 "ml/parser.ml"
-               : 'mutable_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2384 "ml/parser.mly"
-                                                ( Concrete )
-# 12190 "ml/parser.ml"
-               : 'virtual_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2385 "ml/parser.mly"
-                                                ( Virtual )
-# 12196 "ml/parser.ml"
-               : 'virtual_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2388 "ml/parser.mly"
-                 ( Public, Concrete )
-# 12202 "ml/parser.ml"
-               : 'private_virtual_flags))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2389 "ml/parser.mly"
-            ( Private, Concrete )
-# 12208 "ml/parser.ml"
-               : 'private_virtual_flags))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2390 "ml/parser.mly"
-            ( Public, Virtual )
-# 12214 "ml/parser.ml"
-               : 'private_virtual_flags))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2391 "ml/parser.mly"
-                    ( Private, Virtual )
-# 12220 "ml/parser.ml"
-               : 'private_virtual_flags))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2392 "ml/parser.mly"
-                    ( Private, Virtual )
-# 12226 "ml/parser.ml"
-               : 'private_virtual_flags))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2395 "ml/parser.mly"
-                                                ( Fresh )
-# 12232 "ml/parser.ml"
-               : 'override_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2396 "ml/parser.mly"
-                                                ( Override )
-# 12238 "ml/parser.ml"
-               : 'override_flag))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2399 "ml/parser.mly"
-                                                ( () )
-# 12244 "ml/parser.ml"
-               : 'opt_bar))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2400 "ml/parser.mly"
-                                                ( () )
-# 12250 "ml/parser.ml"
-               : 'opt_bar))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2403 "ml/parser.mly"
-                                                ( () )
-# 12256 "ml/parser.ml"
-               : 'opt_semi))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2404 "ml/parser.mly"
-                                                ( () )
-# 12262 "ml/parser.ml"
-               : 'opt_semi))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2407 "ml/parser.mly"
-                                                ( "-" )
-# 12268 "ml/parser.ml"
-               : 'subtractive))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2408 "ml/parser.mly"
-                                                ( "-." )
-# 12274 "ml/parser.ml"
-               : 'subtractive))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2411 "ml/parser.mly"
-                                                ( "+" )
-# 12280 "ml/parser.ml"
-               : 'additive))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2412 "ml/parser.mly"
-                                                ( "+." )
-# 12286 "ml/parser.ml"
-               : 'additive))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2418 "ml/parser.mly"
-           ( _1 )
-# 12293 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : string) in
-    Obj.repr(
-# 2419 "ml/parser.mly"
-           ( _1 )
-# 12300 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2420 "ml/parser.mly"
-        ( "and" )
-# 12306 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2421 "ml/parser.mly"
-       ( "as" )
-# 12312 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2422 "ml/parser.mly"
-           ( "assert" )
-# 12318 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2423 "ml/parser.mly"
-          ( "begin" )
-# 12324 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2424 "ml/parser.mly"
-          ( "class" )
-# 12330 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2425 "ml/parser.mly"
-               ( "constraint" )
-# 12336 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2426 "ml/parser.mly"
-       ( "do" )
-# 12342 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2427 "ml/parser.mly"
-         ( "done" )
-# 12348 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2428 "ml/parser.mly"
-           ( "downto" )
-# 12354 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2429 "ml/parser.mly"
-         ( "else" )
-# 12360 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2430 "ml/parser.mly"
-        ( "end" )
-# 12366 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2431 "ml/parser.mly"
-              ( "exception" )
-# 12372 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2432 "ml/parser.mly"
-             ( "external" )
-# 12378 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2433 "ml/parser.mly"
-          ( "false" )
-# 12384 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2434 "ml/parser.mly"
-        ( "for" )
-# 12390 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2435 "ml/parser.mly"
-        ( "fun" )
-# 12396 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2436 "ml/parser.mly"
-             ( "function" )
-# 12402 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2437 "ml/parser.mly"
-            ( "functor" )
-# 12408 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2438 "ml/parser.mly"
-       ( "if" )
-# 12414 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2439 "ml/parser.mly"
-       ( "in" )
-# 12420 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2440 "ml/parser.mly"
-            ( "include" )
-# 12426 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2441 "ml/parser.mly"
-            ( "inherit" )
-# 12432 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2442 "ml/parser.mly"
-                ( "initializer" )
-# 12438 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2443 "ml/parser.mly"
-         ( "lazy" )
-# 12444 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2444 "ml/parser.mly"
-        ( "let" )
-# 12450 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2445 "ml/parser.mly"
-          ( "match" )
-# 12456 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2446 "ml/parser.mly"
-           ( "method" )
-# 12462 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2447 "ml/parser.mly"
-           ( "module" )
-# 12468 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2448 "ml/parser.mly"
-            ( "mutable" )
-# 12474 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2449 "ml/parser.mly"
-        ( "new" )
-# 12480 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2450 "ml/parser.mly"
-           ( "nonrec" )
-# 12486 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2451 "ml/parser.mly"
-           ( "object" )
-# 12492 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2452 "ml/parser.mly"
-       ( "of" )
-# 12498 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2453 "ml/parser.mly"
-         ( "open" )
-# 12504 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2454 "ml/parser.mly"
-       ( "or" )
-# 12510 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2455 "ml/parser.mly"
-            ( "private" )
-# 12516 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2456 "ml/parser.mly"
-        ( "rec" )
-# 12522 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2457 "ml/parser.mly"
-        ( "sig" )
-# 12528 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2458 "ml/parser.mly"
-           ( "struct" )
-# 12534 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2459 "ml/parser.mly"
-         ( "then" )
-# 12540 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2460 "ml/parser.mly"
-       ( "to" )
-# 12546 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2461 "ml/parser.mly"
-         ( "true" )
-# 12552 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2462 "ml/parser.mly"
-        ( "try" )
-# 12558 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2463 "ml/parser.mly"
-         ( "type" )
-# 12564 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2464 "ml/parser.mly"
-        ( "val" )
-# 12570 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2465 "ml/parser.mly"
-            ( "virtual" )
-# 12576 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2466 "ml/parser.mly"
-         ( "when" )
-# 12582 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2467 "ml/parser.mly"
-          ( "while" )
-# 12588 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2468 "ml/parser.mly"
-         ( "with" )
-# 12594 "ml/parser.ml"
-               : 'single_attr_id))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'single_attr_id) in
-    Obj.repr(
-# 2473 "ml/parser.mly"
-                   ( mkloc _1 (symbol_rloc()) )
-# 12601 "ml/parser.ml"
-               : 'attr_id))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 2 : 'single_attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'attr_id) in
-    Obj.repr(
-# 2474 "ml/parser.mly"
-                               ( mkloc (_1 ^ "." ^ _3.txt) (symbol_rloc()))
-# 12609 "ml/parser.ml"
-               : 'attr_id))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'payload) in
-    Obj.repr(
-# 2477 "ml/parser.mly"
-                                      ( (_2, _3) )
-# 12617 "ml/parser.ml"
-               : 'attribute))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'payload) in
-    Obj.repr(
-# 2480 "ml/parser.mly"
-                                        ( (_2, _3) )
-# 12625 "ml/parser.ml"
-               : 'post_item_attribute))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'payload) in
-    Obj.repr(
-# 2483 "ml/parser.mly"
-                                          ( (_2, _3) )
-# 12633 "ml/parser.ml"
-               : 'floating_attribute))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2486 "ml/parser.mly"
-                 ( [] )
-# 12639 "ml/parser.ml"
-               : 'post_item_attributes))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'post_item_attribute) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'post_item_attributes) in
-    Obj.repr(
-# 2487 "ml/parser.mly"
-                                             ( _1 :: _2 )
-# 12647 "ml/parser.ml"
-               : 'post_item_attributes))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2490 "ml/parser.mly"
-               ( [] )
-# 12653 "ml/parser.ml"
-               : 'attributes))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'attribute) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2491 "ml/parser.mly"
-                         ( _1 :: _2 )
-# 12661 "ml/parser.ml"
-               : 'attributes))
-; (fun __caml_parser_env ->
-    Obj.repr(
-# 2494 "ml/parser.mly"
-                 ( None, [] )
-# 12667 "ml/parser.ml"
-               : 'ext_attributes))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 1 : 'attribute) in
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2495 "ml/parser.mly"
-                         ( None, _1 :: _2 )
-# 12675 "ml/parser.ml"
-               : 'ext_attributes))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 1 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 0 : 'attributes) in
-    Obj.repr(
-# 2496 "ml/parser.mly"
-                               ( Some _2, _3 )
-# 12683 "ml/parser.ml"
-               : 'ext_attributes))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'payload) in
-    Obj.repr(
-# 2499 "ml/parser.mly"
-                                           ( (_2, _3) )
-# 12691 "ml/parser.ml"
-               : 'extension))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'attr_id) in
-    let _3 = (Parsing.peek_val __caml_parser_env 1 : 'payload) in
-    Obj.repr(
-# 2502 "ml/parser.mly"
-                                                  ( (_2, _3) )
-# 12699 "ml/parser.ml"
-               : 'item_extension))
-; (fun __caml_parser_env ->
-    let _1 = (Parsing.peek_val __caml_parser_env 0 : 'structure) in
-    Obj.repr(
-# 2505 "ml/parser.mly"
-              ( PStr _1 )
-# 12706 "ml/parser.ml"
-               : 'payload))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'signature) in
-    Obj.repr(
-# 2506 "ml/parser.mly"
-                    ( PSig _2 )
-# 12713 "ml/parser.ml"
-               : 'payload))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'core_type) in
-    Obj.repr(
-# 2507 "ml/parser.mly"
-                    ( PTyp _2 )
-# 12720 "ml/parser.ml"
-               : 'payload))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 0 : 'pattern) in
-    Obj.repr(
-# 2508 "ml/parser.mly"
-                     ( PPat (_2, None) )
-# 12727 "ml/parser.ml"
-               : 'payload))
-; (fun __caml_parser_env ->
-    let _2 = (Parsing.peek_val __caml_parser_env 2 : 'pattern) in
-    let _4 = (Parsing.peek_val __caml_parser_env 0 : 'seq_expr) in
-    Obj.repr(
-# 2509 "ml/parser.mly"
-                                   ( PPat (_2, Some _4) )
-# 12735 "ml/parser.ml"
-               : 'payload))
-(* Entry implementation *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry interface *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry toplevel_phrase *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry use_file *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry parse_core_type *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry parse_expression *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-(* Entry parse_pattern *)
-; (fun __caml_parser_env -> raise (Parsing.YYexit (Parsing.peek_val __caml_parser_env 0)))
-|]
-let yytables =
-  { Parsing.actions=yyact;
-    Parsing.transl_const=yytransl_const;
-    Parsing.transl_block=yytransl_block;
-    Parsing.lhs=yylhs;
-    Parsing.len=yylen;
-    Parsing.defred=yydefred;
-    Parsing.dgoto=yydgoto;
-    Parsing.sindex=yysindex;
-    Parsing.rindex=yyrindex;
-    Parsing.gindex=yygindex;
-    Parsing.tablesize=yytablesize;
-    Parsing.table=yytable;
-    Parsing.check=yycheck;
-    Parsing.error_function=parse_error;
-    Parsing.names_const=yynames_const;
-    Parsing.names_block=yynames_block }
-let implementation (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 1 lexfun lexbuf : Parsetree.structure)
-let interface (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 2 lexfun lexbuf : Parsetree.signature)
-let toplevel_phrase (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 3 lexfun lexbuf : Parsetree.toplevel_phrase)
-let use_file (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 4 lexfun lexbuf : Parsetree.toplevel_phrase list)
-let parse_core_type (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 5 lexfun lexbuf : Parsetree.core_type)
-let parse_expression (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 6 lexfun lexbuf : Parsetree.expression)
-let parse_pattern (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =
-   (Parsing.yyparse yytables 7 lexfun lexbuf : Parsetree.pattern)
-;;
diff --git a/src/compiler-libs-406/parser.mli b/src/compiler-libs-406/parser.mli
deleted file mode 100644
index 444edf03..00000000
--- a/src/compiler-libs-406/parser.mli
+++ /dev/null
@@ -1,135 +0,0 @@
-type token =
-  | AMPERAMPER
-  | AMPERSAND
-  | AND
-  | AS
-  | ASSERT
-  | BACKQUOTE
-  | BANG
-  | BAR
-  | BARBAR
-  | BARRBRACKET
-  | BEGIN
-  | CHAR of (char)
-  | CLASS
-  | COLON
-  | COLONCOLON
-  | COLONEQUAL
-  | COLONGREATER
-  | COMMA
-  | CONSTRAINT
-  | DO
-  | DONE
-  | DOT
-  | DOTDOT
-  | DOWNTO
-  | ELSE
-  | END
-  | EOF
-  | EQUAL
-  | EXCEPTION
-  | EXTERNAL
-  | FALSE
-  | FLOAT of (string * char option)
-  | FOR
-  | FUN
-  | FUNCTION
-  | FUNCTOR
-  | GREATER
-  | GREATERRBRACE
-  | GREATERRBRACKET
-  | IF
-  | IN
-  | INCLUDE
-  | INFIXOP0 of (string)
-  | INFIXOP1 of (string)
-  | INFIXOP2 of (string)
-  | INFIXOP3 of (string)
-  | INFIXOP4 of (string)
-  | DOTOP of (string)
-  | INHERIT
-  | INITIALIZER
-  | INT of (string * char option)
-  | LABEL of (string)
-  | LAZY
-  | LBRACE
-  | LBRACELESS
-  | LBRACKET
-  | LBRACKETBAR
-  | LBRACKETLESS
-  | LBRACKETGREATER
-  | LBRACKETPERCENT
-  | LBRACKETPERCENTPERCENT
-  | LESS
-  | LESSMINUS
-  | LET
-  | LIDENT of (string)
-  | LPAREN
-  | LBRACKETAT
-  | LBRACKETATAT
-  | LBRACKETATATAT
-  | MATCH
-  | METHOD
-  | MINUS
-  | MINUSDOT
-  | MINUSGREATER
-  | MODULE
-  | MUTABLE
-  | NEW
-  | NONREC
-  | OBJECT
-  | OF
-  | OPEN
-  | OPTLABEL of (string)
-  | OR
-  | PERCENT
-  | PLUS
-  | PLUSDOT
-  | PLUSEQ
-  | PREFIXOP of (string)
-  | PRIVATE
-  | QUESTION
-  | QUOTE
-  | RBRACE
-  | RBRACKET
-  | REC
-  | RPAREN
-  | SEMI
-  | SEMISEMI
-  | HASH
-  | HASHOP of (string)
-  | SIG
-  | STAR
-  | STRING of (string * string option)
-  | STRUCT
-  | THEN
-  | TILDE
-  | TO
-  | TRUE
-  | TRY
-  | TYPE
-  | UIDENT of (string)
-  | UNDERSCORE
-  | VAL
-  | VIRTUAL
-  | WHEN
-  | WHILE
-  | WITH
-  | COMMENT of (string * Location.t)
-  | DOCSTRING of (Docstrings.docstring)
-  | EOL
-
-val implementation :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.structure
-val interface :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.signature
-val toplevel_phrase :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.toplevel_phrase
-val use_file :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.toplevel_phrase list
-val parse_core_type :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.core_type
-val parse_expression :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.expression
-val parse_pattern :
-  (Lexing.lexbuf  -> token) -> Lexing.lexbuf -> Parsetree.pattern
diff --git a/src/compiler-libs-406/parsetree.mli b/src/compiler-libs-406/parsetree.mli
deleted file mode 100644
index 9b275c4c..00000000
--- a/src/compiler-libs-406/parsetree.mli
+++ /dev/null
@@ -1,875 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Abstract syntax tree produced by parsing *)
-
-open Asttypes
-
-type constant =
-    Pconst_integer of string * char option
-  (* 3 3l 3L 3n
-
-     Suffixes [g-z][G-Z] are accepted by the parser.
-     Suffixes except 'l', 'L' and 'n' are rejected by the typechecker
-  *)
-  | Pconst_char of char
-  (* 'c' *)
-  | Pconst_string of string * string option
-  (* "constant"
-     {delim|other constant|delim}
-  *)
-  | Pconst_float of string * char option
-  (* 3.4 2e5 1.4e-4
-
-     Suffixes [g-z][G-Z] are accepted by the parser.
-     Suffixes are rejected by the typechecker.
-  *)
-
-(** {1 Extension points} *)
-
-type attribute = string loc * payload
-       (* [@id ARG]
-          [@@id ARG]
-
-          Metadata containers passed around within the AST.
-          The compiler ignores unknown attributes.
-       *)
-
-and extension = string loc * payload
-      (* [%id ARG]
-         [%%id ARG]
-
-         Sub-language placeholder -- rejected by the typechecker.
-      *)
-
-and attributes = attribute list
-
-and payload =
-  | PStr of structure
-  | PSig of signature (* : SIG *)
-  | PTyp of core_type  (* : T *)
-  | PPat of pattern * expression option  (* ? P  or  ? P when E *)
-
-(** {1 Core language} *)
-
-(* Type expressions *)
-
-and core_type =
-    {
-     ptyp_desc: core_type_desc;
-     ptyp_loc: Location.t;
-     ptyp_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and core_type_desc =
-  | Ptyp_any
-        (*  _ *)
-  | Ptyp_var of string
-        (* 'a *)
-  | Ptyp_arrow of arg_label * core_type * core_type
-        (* T1 -> T2       Simple
-           ~l:T1 -> T2    Labelled
-           ?l:T1 -> T2    Optional
-         *)
-  | Ptyp_tuple of core_type list
-        (* T1 * ... * Tn
-
-           Invariant: n >= 2
-        *)
-  | Ptyp_constr of Longident.t loc * core_type list
-        (* tconstr
-           T tconstr
-           (T1, ..., Tn) tconstr
-         *)
-  | Ptyp_object of object_field list * closed_flag
-        (* < l1:T1; ...; ln:Tn >     (flag = Closed)
-           < l1:T1; ...; ln:Tn; .. > (flag = Open)
-         *)
-  | Ptyp_class of Longident.t loc * core_type list
-        (* #tconstr
-           T #tconstr
-           (T1, ..., Tn) #tconstr
-         *)
-  | Ptyp_alias of core_type * string
-        (* T as 'a *)
-  | Ptyp_variant of row_field list * closed_flag * label list option
-        (* [ `A|`B ]         (flag = Closed; labels = None)
-           [> `A|`B ]        (flag = Open;   labels = None)
-           [< `A|`B ]        (flag = Closed; labels = Some [])
-           [< `A|`B > `X `Y ](flag = Closed; labels = Some ["X";"Y"])
-         *)
-  | Ptyp_poly of string loc list * core_type
-        (* 'a1 ... 'an. T
-
-           Can only appear in the following context:
-
-           - As the core_type of a Ppat_constraint node corresponding
-             to a constraint on a let-binding: let x : 'a1 ... 'an. T
-             = e ...
-
-           - Under Cfk_virtual for methods (not values).
-
-           - As the core_type of a Pctf_method node.
-
-           - As the core_type of a Pexp_poly node.
-
-           - As the pld_type field of a label_declaration.
-
-           - As a core_type of a Ptyp_object node.
-         *)
-
-  | Ptyp_package of package_type
-        (* (module S) *)
-  | Ptyp_extension of extension
-        (* [%id] *)
-
-and package_type = Longident.t loc * (Longident.t loc * core_type) list
-      (*
-        (module S)
-        (module S with type t1 = T1 and ... and tn = Tn)
-       *)
-
-and row_field =
-  | Rtag of label loc * attributes * bool * core_type list
-        (* [`A]                   ( true,  [] )
-           [`A of T]              ( false, [T] )
-           [`A of T1 & .. & Tn]   ( false, [T1;...Tn] )
-           [`A of & T1 & .. & Tn] ( true,  [T1;...Tn] )
-
-          - The 2nd field is true if the tag contains a
-            constant (empty) constructor.
-          - '&' occurs when several types are used for the same constructor
-            (see 4.2 in the manual)
-
-          - TODO: switch to a record representation, and keep location
-        *)
-  | Rinherit of core_type
-        (* [ T ] *)
-
-and object_field =
-  | Otag of label loc * attributes * core_type
-  | Oinherit of core_type
-
-(* Patterns *)
-
-and pattern =
-    {
-     ppat_desc: pattern_desc;
-     ppat_loc: Location.t;
-     ppat_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and pattern_desc =
-  | Ppat_any
-        (* _ *)
-  | Ppat_var of string loc
-        (* x *)
-  | Ppat_alias of pattern * string loc
-        (* P as 'a *)
-  | Ppat_constant of constant
-        (* 1, 'a', "true", 1.0, 1l, 1L, 1n *)
-  | Ppat_interval of constant * constant
-        (* 'a'..'z'
-
-           Other forms of interval are recognized by the parser
-           but rejected by the type-checker. *)
-  | Ppat_tuple of pattern list
-        (* (P1, ..., Pn)
-
-           Invariant: n >= 2
-        *)
-  | Ppat_construct of Longident.t loc * pattern option
-        (* C                None
-           C P              Some P
-           C (P1, ..., Pn)  Some (Ppat_tuple [P1; ...; Pn])
-         *)
-  | Ppat_variant of label * pattern option
-        (* `A             (None)
-           `A P           (Some P)
-         *)
-  | Ppat_record of (Longident.t loc * pattern) list * closed_flag
-        (* { l1=P1; ...; ln=Pn }     (flag = Closed)
-           { l1=P1; ...; ln=Pn; _}   (flag = Open)
-
-           Invariant: n > 0
-         *)
-  | Ppat_array of pattern list
-        (* [| P1; ...; Pn |] *)
-  | Ppat_or of pattern * pattern
-        (* P1 | P2 *)
-  | Ppat_constraint of pattern * core_type
-        (* (P : T) *)
-  | Ppat_type of Longident.t loc
-        (* #tconst *)
-  | Ppat_lazy of pattern
-        (* lazy P *)
-  | Ppat_unpack of string loc
-        (* (module P)
-           Note: (module P : S) is represented as
-           Ppat_constraint(Ppat_unpack, Ptyp_package)
-         *)
-  | Ppat_exception of pattern
-        (* exception P *)
-  | Ppat_extension of extension
-        (* [%id] *)
-  | Ppat_open of Longident.t loc * pattern
-        (* M.(P) *)
-
-(* Value expressions *)
-
-and expression =
-    {
-     pexp_desc: expression_desc;
-     pexp_loc: Location.t;
-     pexp_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and expression_desc =
-  | Pexp_ident of Longident.t loc
-        (* x
-           M.x
-         *)
-  | Pexp_constant of constant
-        (* 1, 'a', "true", 1.0, 1l, 1L, 1n *)
-  | Pexp_let of rec_flag * value_binding list * expression
-        (* let P1 = E1 and ... and Pn = EN in E       (flag = Nonrecursive)
-           let rec P1 = E1 and ... and Pn = EN in E   (flag = Recursive)
-         *)
-  | Pexp_function of case list
-        (* function P1 -> E1 | ... | Pn -> En *)
-  | Pexp_fun of arg_label * expression option * pattern * expression
-        (* fun P -> E1                          (Simple, None)
-           fun ~l:P -> E1                       (Labelled l, None)
-           fun ?l:P -> E1                       (Optional l, None)
-           fun ?l:(P = E0) -> E1                (Optional l, Some E0)
-
-           Notes:
-           - If E0 is provided, only Optional is allowed.
-           - "fun P1 P2 .. Pn -> E1" is represented as nested Pexp_fun.
-           - "let f P = E" is represented using Pexp_fun.
-         *)
-  | Pexp_apply of expression * (arg_label * expression) list
-        (* E0 ~l1:E1 ... ~ln:En
-           li can be empty (non labeled argument) or start with '?'
-           (optional argument).
-
-           Invariant: n > 0
-         *)
-  | Pexp_match of expression * case list
-        (* match E0 with P1 -> E1 | ... | Pn -> En *)
-  | Pexp_try of expression * case list
-        (* try E0 with P1 -> E1 | ... | Pn -> En *)
-  | Pexp_tuple of expression list
-        (* (E1, ..., En)
-
-           Invariant: n >= 2
-        *)
-  | Pexp_construct of Longident.t loc * expression option
-        (* C                None
-           C E              Some E
-           C (E1, ..., En)  Some (Pexp_tuple[E1;...;En])
-        *)
-  | Pexp_variant of label * expression option
-        (* `A             (None)
-           `A E           (Some E)
-         *)
-  | Pexp_record of (Longident.t loc * expression) list * expression option
-        (* { l1=P1; ...; ln=Pn }     (None)
-           { E0 with l1=P1; ...; ln=Pn }   (Some E0)
-
-           Invariant: n > 0
-         *)
-  | Pexp_field of expression * Longident.t loc
-        (* E.l *)
-  | Pexp_setfield of expression * Longident.t loc * expression
-        (* E1.l <- E2 *)
-  | Pexp_array of expression list
-        (* [| E1; ...; En |] *)
-  | Pexp_ifthenelse of expression * expression * expression option
-        (* if E1 then E2 else E3 *)
-  | Pexp_sequence of expression * expression
-        (* E1; E2 *)
-  | Pexp_while of expression * expression
-        (* while E1 do E2 done *)
-  | Pexp_for of
-      pattern *  expression * expression * direction_flag * expression
-        (* for i = E1 to E2 do E3 done      (flag = Upto)
-           for i = E1 downto E2 do E3 done  (flag = Downto)
-         *)
-  | Pexp_constraint of expression * core_type
-        (* (E : T) *)
-  | Pexp_coerce of expression * core_type option * core_type
-        (* (E :> T)        (None, T)
-           (E : T0 :> T)   (Some T0, T)
-         *)
-  | Pexp_send of expression * label loc
-        (*  E # m *)
-  | Pexp_new of Longident.t loc
-        (* new M.c *)
-  | Pexp_setinstvar of label loc * expression
-        (* x <- 2 *)
-  | Pexp_override of (label loc * expression) list
-        (* {< x1 = E1; ...; Xn = En >} *)
-  | Pexp_letmodule of string loc * module_expr * expression
-        (* let module M = ME in E *)
-  | Pexp_letexception of extension_constructor * expression
-        (* let exception C in E *)
-  | Pexp_assert of expression
-        (* assert E
-           Note: "assert false" is treated in a special way by the
-           type-checker. *)
-  | Pexp_lazy of expression
-        (* lazy E *)
-  | Pexp_poly of expression * core_type option
-        (* Used for method bodies.
-
-           Can only be used as the expression under Cfk_concrete
-           for methods (not values). *)
-  | Pexp_object of class_structure
-        (* object ... end *)
-  | Pexp_newtype of string loc * expression
-        (* fun (type t) -> E *)
-  | Pexp_pack of module_expr
-        (* (module ME)
-
-           (module ME : S) is represented as
-           Pexp_constraint(Pexp_pack, Ptyp_package S) *)
-  | Pexp_open of override_flag * Longident.t loc * expression
-        (* M.(E)
-           let open M in E
-           let! open M in E *)
-  | Pexp_extension of extension
-        (* [%id] *)
-  | Pexp_unreachable
-        (* . *)
-
-and case =   (* (P -> E) or (P when E0 -> E) *)
-    {
-     pc_lhs: pattern;
-     pc_guard: expression option;
-     pc_rhs: expression;
-    }
-
-(* Value descriptions *)
-
-and value_description =
-    {
-     pval_name: string loc;
-     pval_type: core_type;
-     pval_prim: string list;
-     pval_attributes: attributes;  (* ... [@@id1] [@@id2] *)
-     pval_loc: Location.t;
-    }
-
-(*
-  val x: T                            (prim = [])
-  external x: T = "s1" ... "sn"       (prim = ["s1";..."sn"])
-*)
-
-(* Type declarations *)
-
-and type_declaration =
-    {
-     ptype_name: string loc;
-     ptype_params: (core_type * variance) list;
-           (* ('a1,...'an) t; None represents  _*)
-     ptype_cstrs: (core_type * core_type * Location.t) list;
-           (* ... constraint T1=T1'  ... constraint Tn=Tn' *)
-     ptype_kind: type_kind;
-     ptype_private: private_flag;   (* = private ... *)
-     ptype_manifest: core_type option;  (* = T *)
-     ptype_attributes: attributes;   (* ... [@@id1] [@@id2] *)
-     ptype_loc: Location.t;
-    }
-
-(*
-  type t                     (abstract, no manifest)
-  type t = T0                (abstract, manifest=T0)
-  type t = C of T | ...      (variant,  no manifest)
-  type t = T0 = C of T | ... (variant,  manifest=T0)
-  type t = {l: T; ...}       (record,   no manifest)
-  type t = T0 = {l : T; ...} (record,   manifest=T0)
-  type t = ..                (open,     no manifest)
-*)
-
-and type_kind =
-  | Ptype_abstract
-  | Ptype_variant of constructor_declaration list
-        (* Invariant: non-empty list *)
-  | Ptype_record of label_declaration list
-        (* Invariant: non-empty list *)
-  | Ptype_open
-
-and label_declaration =
-    {
-     pld_name: string loc;
-     pld_mutable: mutable_flag;
-     pld_type: core_type;
-     pld_loc: Location.t;
-     pld_attributes: attributes; (* l : T [@id1] [@id2] *)
-    }
-
-(*  { ...; l: T; ... }            (mutable=Immutable)
-    { ...; mutable l: T; ... }    (mutable=Mutable)
-
-    Note: T can be a Ptyp_poly.
-*)
-
-and constructor_declaration =
-    {
-     pcd_name: string loc;
-     pcd_args: constructor_arguments;
-     pcd_res: core_type option;
-     pcd_loc: Location.t;
-     pcd_attributes: attributes; (* C of ... [@id1] [@id2] *)
-    }
-
-and constructor_arguments =
-  | Pcstr_tuple of core_type list
-  | Pcstr_record of label_declaration list
-
-(*
-  | C of T1 * ... * Tn     (res = None,    args = Pcstr_tuple [])
-  | C: T0                  (res = Some T0, args = [])
-  | C: T1 * ... * Tn -> T0 (res = Some T0, args = Pcstr_tuple)
-  | C of {...}             (res = None,    args = Pcstr_record)
-  | C: {...} -> T0         (res = Some T0, args = Pcstr_record)
-  | C of {...} as t        (res = None,    args = Pcstr_record)
-*)
-
-and type_extension =
-    {
-     ptyext_path: Longident.t loc;
-     ptyext_params: (core_type * variance) list;
-     ptyext_constructors: extension_constructor list;
-     ptyext_private: private_flag;
-     ptyext_attributes: attributes;   (* ... [@@id1] [@@id2] *)
-    }
-(*
-  type t += ...
-*)
-
-and extension_constructor =
-    {
-     pext_name: string loc;
-     pext_kind : extension_constructor_kind;
-     pext_loc : Location.t;
-     pext_attributes: attributes; (* C of ... [@id1] [@id2] *)
-    }
-
-and extension_constructor_kind =
-    Pext_decl of constructor_arguments * core_type option
-      (*
-         | C of T1 * ... * Tn     ([T1; ...; Tn], None)
-         | C: T0                  ([], Some T0)
-         | C: T1 * ... * Tn -> T0 ([T1; ...; Tn], Some T0)
-       *)
-  | Pext_rebind of Longident.t loc
-      (*
-         | C = D
-       *)
-
-(** {1 Class language} *)
-
-(* Type expressions for the class language *)
-
-and class_type =
-    {
-     pcty_desc: class_type_desc;
-     pcty_loc: Location.t;
-     pcty_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and class_type_desc =
-  | Pcty_constr of Longident.t loc * core_type list
-        (* c
-           ['a1, ..., 'an] c *)
-  | Pcty_signature of class_signature
-        (* object ... end *)
-  | Pcty_arrow of arg_label * core_type * class_type
-        (* T -> CT       Simple
-           ~l:T -> CT    Labelled l
-           ?l:T -> CT    Optional l
-         *)
-  | Pcty_extension of extension
-        (* [%id] *)
-  | Pcty_open of override_flag * Longident.t loc * class_type
-        (* let open M in CT *)
-
-and class_signature =
-    {
-     pcsig_self: core_type;
-     pcsig_fields: class_type_field list;
-    }
-(* object('selfpat) ... end
-   object ... end             (self = Ptyp_any)
- *)
-
-and class_type_field =
-    {
-     pctf_desc: class_type_field_desc;
-     pctf_loc: Location.t;
-     pctf_attributes: attributes; (* ... [@@id1] [@@id2] *)
-    }
-
-and class_type_field_desc =
-  | Pctf_inherit of class_type
-        (* inherit CT *)
-  | Pctf_val of (label loc * mutable_flag * virtual_flag * core_type)
-        (* val x: T *)
-  | Pctf_method  of (label loc * private_flag * virtual_flag * core_type)
-        (* method x: T
-
-           Note: T can be a Ptyp_poly.
-         *)
-  | Pctf_constraint  of (core_type * core_type)
-        (* constraint T1 = T2 *)
-  | Pctf_attribute of attribute
-        (* [@@@id] *)
-  | Pctf_extension of extension
-        (* [%%id] *)
-
-and 'a class_infos =
-    {
-     pci_virt: virtual_flag;
-     pci_params: (core_type * variance) list;
-     pci_name: string loc;
-     pci_expr: 'a;
-     pci_loc: Location.t;
-     pci_attributes: attributes;  (* ... [@@id1] [@@id2] *)
-    }
-(* class c = ...
-   class ['a1,...,'an] c = ...
-   class virtual c = ...
-
-   Also used for "class type" declaration.
-*)
-
-and class_description = class_type class_infos
-
-and class_type_declaration = class_type class_infos
-
-(* Value expressions for the class language *)
-
-and class_expr =
-    {
-     pcl_desc: class_expr_desc;
-     pcl_loc: Location.t;
-     pcl_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and class_expr_desc =
-  | Pcl_constr of Longident.t loc * core_type list
-        (* c
-           ['a1, ..., 'an] c *)
-  | Pcl_structure of class_structure
-        (* object ... end *)
-  | Pcl_fun of arg_label * expression option * pattern * class_expr
-        (* fun P -> CE                          (Simple, None)
-           fun ~l:P -> CE                       (Labelled l, None)
-           fun ?l:P -> CE                       (Optional l, None)
-           fun ?l:(P = E0) -> CE                (Optional l, Some E0)
-         *)
-  | Pcl_apply of class_expr * (arg_label * expression) list
-        (* CE ~l1:E1 ... ~ln:En
-           li can be empty (non labeled argument) or start with '?'
-           (optional argument).
-
-           Invariant: n > 0
-         *)
-  | Pcl_let of rec_flag * value_binding list * class_expr
-        (* let P1 = E1 and ... and Pn = EN in CE      (flag = Nonrecursive)
-           let rec P1 = E1 and ... and Pn = EN in CE  (flag = Recursive)
-         *)
-  | Pcl_constraint of class_expr * class_type
-        (* (CE : CT) *)
-  | Pcl_extension of extension
-  (* [%id] *)
-  | Pcl_open of override_flag * Longident.t loc * class_expr
-  (* let open M in CE *)
-
-
-and class_structure =
-    {
-     pcstr_self: pattern;
-     pcstr_fields: class_field list;
-    }
-(* object(selfpat) ... end
-   object ... end           (self = Ppat_any)
- *)
-
-and class_field =
-    {
-     pcf_desc: class_field_desc;
-     pcf_loc: Location.t;
-     pcf_attributes: attributes; (* ... [@@id1] [@@id2] *)
-    }
-
-and class_field_desc =
-  | Pcf_inherit of unit
-        (* inherit CE
-           inherit CE as x
-           inherit! CE
-           inherit! CE as x
-         *)
-  | Pcf_val of (label loc * mutable_flag * class_field_kind)
-        (* val x = E
-           val virtual x: T
-         *)
-  | Pcf_method of (label loc * private_flag * class_field_kind)
-        (* method x = E            (E can be a Pexp_poly)
-           method virtual x: T     (T can be a Ptyp_poly)
-         *)
-  | Pcf_constraint of (core_type * core_type)
-        (* constraint T1 = T2 *)
-  | Pcf_initializer of expression
-        (* initializer E *)
-  | Pcf_attribute of attribute
-        (* [@@@id] *)
-  | Pcf_extension of extension
-        (* [%%id] *)
-
-and class_field_kind =
-  | Cfk_virtual of core_type
-  | Cfk_concrete of override_flag * expression
-
-
-
-(** {1 Module language} *)
-
-(* Type expressions for the module language *)
-
-and module_type =
-    {
-     pmty_desc: module_type_desc;
-     pmty_loc: Location.t;
-     pmty_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and module_type_desc =
-  | Pmty_ident of Longident.t loc
-        (* S *)
-  | Pmty_signature of signature
-        (* sig ... end *)
-  | Pmty_functor of string loc * module_type option * module_type
-        (* functor(X : MT1) -> MT2 *)
-  | Pmty_with of module_type * with_constraint list
-        (* MT with ... *)
-  | Pmty_typeof of module_expr
-        (* module type of ME *)
-  | Pmty_extension of extension
-        (* [%id] *)
-  | Pmty_alias of Longident.t loc
-        (* (module M) *)
-
-and signature = signature_item list
-
-and signature_item =
-    {
-     psig_desc: signature_item_desc;
-     psig_loc: Location.t;
-    }
-
-and signature_item_desc =
-  | Psig_value of value_description
-        (*
-          val x: T
-          external x: T = "s1" ... "sn"
-         *)
-  | Psig_type of rec_flag * type_declaration list
-        (* type t1 = ... and ... and tn = ... *)
-  | Psig_typext of type_extension
-        (* type t1 += ... *)
-  | Psig_exception of extension_constructor
-        (* exception C of T *)
-  | Psig_module of module_declaration
-        (* module X : MT *)
-  | Psig_recmodule of module_declaration list
-        (* module rec X1 : MT1 and ... and Xn : MTn *)
-  | Psig_modtype of module_type_declaration
-        (* module type S = MT
-           module type S *)
-  | Psig_open of open_description
-        (* open X *)
-  | Psig_include of include_description
-        (* include MT *)
-  | Psig_class of class_description list
-        (* class c1 : ... and ... and cn : ... *)
-  | Psig_class_type of class_type_declaration list
-        (* class type ct1 = ... and ... and ctn = ... *)
-  | Psig_attribute of attribute
-        (* [@@@id] *)
-  | Psig_extension of extension * attributes
-        (* [%%id] *)
-
-and module_declaration =
-    {
-     pmd_name: string loc;
-     pmd_type: module_type;
-     pmd_attributes: attributes; (* ... [@@id1] [@@id2] *)
-     pmd_loc: Location.t;
-    }
-(* S : MT *)
-
-and module_type_declaration =
-    {
-     pmtd_name: string loc;
-     pmtd_type: module_type option;
-     pmtd_attributes: attributes; (* ... [@@id1] [@@id2] *)
-     pmtd_loc: Location.t;
-    }
-(* S = MT
-   S       (abstract module type declaration, pmtd_type = None)
-*)
-
-and open_description =
-    {
-     popen_lid: Longident.t loc;
-     popen_override: override_flag;
-     popen_loc: Location.t;
-     popen_attributes: attributes;
-    }
-(* open! X - popen_override = Override (silences the 'used identifier
-                              shadowing' warning)
-   open  X - popen_override = Fresh
- *)
-
-and 'a include_infos =
-    {
-     pincl_mod: 'a;
-     pincl_loc: Location.t;
-     pincl_attributes: attributes;
-    }
-
-and include_description = module_type include_infos
-(* include MT *)
-
-and include_declaration = module_expr include_infos
-(* include ME *)
-
-and with_constraint =
-  | Pwith_type of Longident.t loc * type_declaration
-        (* with type X.t = ...
-
-           Note: the last component of the longident must match
-           the name of the type_declaration. *)
-  | Pwith_module of Longident.t loc * Longident.t loc
-        (* with module X.Y = Z *)
-  | Pwith_typesubst of Longident.t loc * type_declaration
-        (* with type X.t := ..., same format as [Pwith_type] *)
-  | Pwith_modsubst of Longident.t loc * Longident.t loc
-        (* with module X.Y := Z *)
-
-(* Value expressions for the module language *)
-
-and module_expr =
-    {
-     pmod_desc: module_expr_desc;
-     pmod_loc: Location.t;
-     pmod_attributes: attributes; (* ... [@id1] [@id2] *)
-    }
-
-and module_expr_desc =
-  | Pmod_ident of Longident.t loc
-        (* X *)
-  | Pmod_structure of structure
-        (* struct ... end *)
-  | Pmod_functor of string loc * module_type option * module_expr
-        (* functor(X : MT1) -> ME *)
-  | Pmod_apply of module_expr * module_expr
-        (* ME1(ME2) *)
-  | Pmod_constraint of module_expr * module_type
-        (* (ME : MT) *)
-  | Pmod_unpack of expression
-        (* (val E) *)
-  | Pmod_extension of extension
-        (* [%id] *)
-
-and structure = structure_item list
-
-and structure_item =
-    {
-     pstr_desc: structure_item_desc;
-     pstr_loc: Location.t;
-    }
-
-and structure_item_desc =
-  | Pstr_eval of expression * attributes
-        (* E *)
-  | Pstr_value of rec_flag * value_binding list
-        (* let P1 = E1 and ... and Pn = EN       (flag = Nonrecursive)
-           let rec P1 = E1 and ... and Pn = EN   (flag = Recursive)
-         *)
-  | Pstr_primitive of value_description
-        (*  val x: T
-            external x: T = "s1" ... "sn" *)
-  | Pstr_type of rec_flag * type_declaration list
-        (* type t1 = ... and ... and tn = ... *)
-  | Pstr_typext of type_extension
-        (* type t1 += ... *)
-  | Pstr_exception of extension_constructor
-        (* exception C of T
-           exception C = M.X *)
-  | Pstr_module of module_binding
-        (* module X = ME *)
-  | Pstr_recmodule of module_binding list
-        (* module rec X1 = ME1 and ... and Xn = MEn *)
-  | Pstr_modtype of module_type_declaration
-        (* module type S = MT *)
-  | Pstr_open of open_description
-        (* open X *)
-  | Pstr_class of unit
-        (* Dummy AST node *)
-  | Pstr_class_type of class_type_declaration list
-        (* class type ct1 = ... and ... and ctn = ... *)
-  | Pstr_include of include_declaration
-        (* include ME *)
-  | Pstr_attribute of attribute
-        (* [@@@id] *)
-  | Pstr_extension of extension * attributes
-        (* [%%id] *)
-
-and value_binding =
-  {
-    pvb_pat: pattern;
-    pvb_expr: expression;
-    pvb_attributes: attributes;
-    pvb_loc: Location.t;
-  }
-
-and module_binding =
-    {
-     pmb_name: string loc;
-     pmb_expr: module_expr;
-     pmb_attributes: attributes;
-     pmb_loc: Location.t;
-    }
-(* X = ME *)
-
-(** {1 Toplevel} *)
-
-(* Toplevel phrases *)
-
-type toplevel_phrase =
-  | Ptop_def of structure
-  | Ptop_dir of string * directive_argument
-     (* #use, #load ... *)
-
-and directive_argument =
-  | Pdir_none
-  | Pdir_string of string
-  | Pdir_int of string * char option
-  | Pdir_ident of Longident.t
-  | Pdir_bool of bool
diff --git a/src/compiler-libs-406/path.ml b/src/compiler-libs-406/path.ml
deleted file mode 100644
index 51893865..00000000
--- a/src/compiler-libs-406/path.ml
+++ /dev/null
@@ -1,109 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-type t =
-    Pident of Ident.t
-  | Pdot of t * string * int
-  | Papply of t * t
-
-let nopos = -1
-
-let rec same p1 p2 =
-  match (p1, p2) with
-    (Pident id1, Pident id2) -> Ident.same id1 id2
-  | (Pdot(p1, s1, _pos1), Pdot(p2, s2, _pos2)) -> s1 = s2 && same p1 p2
-  | (Papply(fun1, arg1), Papply(fun2, arg2)) ->
-       same fun1 fun2 && same arg1 arg2
-  | (_, _) -> false
-
-let rec compare p1 p2 =
-  match (p1, p2) with
-    (Pident id1, Pident id2) -> Ident.compare id1 id2
-  | (Pdot(p1, s1, _pos1), Pdot(p2, s2, _pos2)) ->
-      let h = compare p1 p2 in
-      if h <> 0 then h else String.compare s1 s2
-  | (Papply(fun1, arg1), Papply(fun2, arg2)) ->
-      let h = compare fun1 fun2 in
-      if h <> 0 then h else compare arg1 arg2
-  | ((Pident _ | Pdot _), (Pdot _ | Papply _)) -> -1
-  | ((Pdot _ | Papply _), (Pident _ | Pdot _)) -> 1
-
-let rec isfree id = function
-    Pident id' -> Ident.same id id'
-  | Pdot(p, _s, _pos) -> isfree id p
-  | Papply(p1, p2) -> isfree id p1 || isfree id p2
-
-let rec binding_time = function
-    Pident id -> Ident.binding_time id
-  | Pdot(p, _s, _pos) -> binding_time p
-  | Papply(p1, p2) -> Ext_pervasives.max_int (binding_time p1) (binding_time p2)
-
-let kfalse _ = false
-
-let rec name ?(paren=kfalse) = function
-    Pident id -> Ident.name id
-  | Pdot(p, s, _pos) ->
-      name ~paren p ^ if paren s then ".( " ^ s ^ " )" else "." ^ s
-  | Papply(p1, p2) -> name ~paren p1 ^ "(" ^ name ~paren p2 ^ ")"
-
-let rec head = function
-    Pident id -> id
-  | Pdot(p, _s, _pos) -> head p
-  | Papply _ -> assert false
-
-let flatten =
-  let rec flatten acc = function
-    | Pident id -> `Ok (id, acc)
-    | Pdot (p, s, _) -> flatten (s :: acc) p
-    | Papply _ -> `Contains_apply
-  in
-  fun t -> flatten [] t
-
-let heads p =
-  let rec heads p acc = match p with
-    | Pident id -> id :: acc
-    | Pdot (p, _s, _pos) -> heads p acc
-    | Papply(p1, p2) ->
-        heads p1 (heads p2 acc)
-  in heads p []
-
-let rec last = function
-  | Pident id -> Ident.name id
-  | Pdot(_, s, _) -> s
-  | Papply(_, p) -> last p
-
-let is_uident s =
-  assert (s <> "");
-  match s.[0] with
-  | 'A'..'Z' -> true
-  | _ -> false
-
-type typath =
-  | Regular of t
-  | Ext of t * string
-  | LocalExt of Ident.t
-  | Cstr of t * string
-
-let constructor_typath = function
-  | Pident id when is_uident (Ident.name id) -> LocalExt id
-  | Pdot(ty_path, s, _) when is_uident s ->
-      if is_uident (last ty_path) then Ext (ty_path, s)
-      else Cstr (ty_path, s)
-  | p -> Regular p
-
-let is_constructor_typath p =
-  match constructor_typath p with
-  | Regular _ -> false
-  | _ -> true
diff --git a/src/compiler-libs-406/path.mli b/src/compiler-libs-406/path.mli
deleted file mode 100644
index 18491462..00000000
--- a/src/compiler-libs-406/path.mli
+++ /dev/null
@@ -1,46 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Access paths *)
-
-type t =
-    Pident of Ident.t
-  | Pdot of t * string * int
-  | Papply of t * t
-
-val same: t -> t -> bool
-val compare: t -> t -> int
-val isfree: Ident.t -> t -> bool
-val binding_time: t -> int
-val flatten : t -> [ `Contains_apply | `Ok of Ident.t * string list ]
-
-val nopos: int
-
-val name: ?paren:(string -> bool) -> t -> string
-    (* [paren] tells whether a path suffix needs parentheses *)
-val head: t -> Ident.t
-
-val heads: t -> Ident.t list
-
-val last: t -> string
-
-type typath =
-  | Regular of t
-  | Ext of t * string
-  | LocalExt of Ident.t
-  | Cstr of t * string
-
-val constructor_typath: t -> typath
-val is_constructor_typath: t -> bool
diff --git a/src/compiler-libs-406/predef.ml b/src/compiler-libs-406/predef.ml
deleted file mode 100644
index a6e9a2ea..00000000
--- a/src/compiler-libs-406/predef.ml
+++ /dev/null
@@ -1,277 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Predefined type constructors (with special typing rules in typecore) *)
-
-open Path
-open Types
-open Btype
-
-let builtin_idents = ref []
-
-let wrap create s =
-  let id = create s in
-  builtin_idents := (s, id) :: !builtin_idents;
-  id
-
-let ident_create = wrap Ident.create
-let ident_create_predef_exn = wrap Ident.create_predef_exn
-
-let ident_int = ident_create "int"
-and ident_char = ident_create "char"
-and ident_bytes = ident_create "bytes"
-and ident_float = ident_create "float"
-and ident_bool = ident_create "bool"
-and ident_unit = ident_create "unit"
-and ident_exn = ident_create "exn"
-and ident_array = ident_create "array"
-and ident_list = ident_create "list"
-and ident_option = ident_create "option"
-
-and ident_int64 = ident_create "int64"
-and ident_lazy_t = ident_create "lazy_t"
-and ident_string = ident_create "string"
-and ident_extension_constructor = ident_create "extension_constructor"
-and ident_floatarray = ident_create "floatarray"
-
-type test =
-  | For_sure_yes
-  | For_sure_no 
-  | NA
-
-let type_is_builtin_path_but_option (p : Path.t) : test  =
-  match p with
-  | Pident {Ident.stamp} ->
-      if 
-        stamp >= ident_int.Ident.stamp
-        && stamp  <= ident_floatarray.Ident.stamp    
-      then    
-        if  (stamp = ident_option.Ident.stamp)
-         || (stamp = ident_unit.Ident.stamp) then 
-          For_sure_no
-        else For_sure_yes
-      else NA 
-  | _ -> NA
-
-let path_int = Pident ident_int
-and path_char = Pident ident_char
-and path_bytes = Pident ident_bytes
-and path_float = Pident ident_float
-and path_bool = Pident ident_bool
-and path_unit = Pident ident_unit
-and path_exn = Pident ident_exn
-and path_array = Pident ident_array
-and path_list = Pident ident_list
-and path_option = Pident ident_option
-
-
-and path_int64 = Pident ident_int64
-and path_lazy_t = Pident ident_lazy_t
-and path_string = Pident ident_string
-and path_extension_constructor = Pident ident_extension_constructor
-and path_floatarray = Pident ident_floatarray
-
-let type_int = newgenty (Tconstr(path_int, [], ref Mnil))
-and type_char = newgenty (Tconstr(path_char, [], ref Mnil))
-and type_bytes = newgenty (Tconstr(path_bytes, [], ref Mnil))
-and type_float = newgenty (Tconstr(path_float, [], ref Mnil))
-and type_bool = newgenty (Tconstr(path_bool, [], ref Mnil))
-and type_unit = newgenty (Tconstr(path_unit, [], ref Mnil))
-and type_exn = newgenty (Tconstr(path_exn, [], ref Mnil))
-and type_array t = newgenty (Tconstr(path_array, [t], ref Mnil))
-and type_list t = newgenty (Tconstr(path_list, [t], ref Mnil))
-and type_option t = newgenty (Tconstr(path_option, [t], ref Mnil))
-
-
-and type_int64 = newgenty (Tconstr(path_int64, [], ref Mnil))
-and type_lazy_t t = newgenty (Tconstr(path_lazy_t, [t], ref Mnil))
-and type_string = newgenty (Tconstr(path_string, [], ref Mnil))
-and type_extension_constructor =
-      newgenty (Tconstr(path_extension_constructor, [], ref Mnil))
-and type_floatarray = newgenty (Tconstr(path_floatarray, [], ref Mnil))
-
-let ident_match_failure = ident_create_predef_exn "Match_failure"
-and ident_out_of_memory = ident_create_predef_exn "Out_of_memory"
-and ident_invalid_argument = ident_create_predef_exn "Invalid_argument"
-and ident_failure = ident_create_predef_exn "Failure"
-and ident_not_found = ident_create_predef_exn "Not_found"
-and ident_sys_error = ident_create_predef_exn "Sys_error"
-and ident_end_of_file = ident_create_predef_exn "End_of_file"
-and ident_division_by_zero = ident_create_predef_exn "Division_by_zero"
-and ident_stack_overflow = ident_create_predef_exn "Stack_overflow"
-and ident_sys_blocked_io = ident_create_predef_exn "Sys_blocked_io"
-and ident_assert_failure = ident_create_predef_exn "Assert_failure"
-and ident_undefined_recursive_module =
-        ident_create_predef_exn "Undefined_recursive_module"
-
-let all_predef_exns = [
-  ident_match_failure;
-  ident_out_of_memory;
-  ident_invalid_argument;
-  ident_failure;
-  ident_not_found;
-  ident_sys_error;
-  ident_end_of_file;
-  ident_division_by_zero;
-  ident_stack_overflow;
-  ident_sys_blocked_io;
-  ident_assert_failure;
-  ident_undefined_recursive_module;
-]
-
-let path_match_failure = Pident ident_match_failure
-and path_assert_failure = Pident ident_assert_failure
-and path_undefined_recursive_module = Pident ident_undefined_recursive_module
-
-let decl_abstr =
-  {type_params = [];
-   type_arity = 0;
-   type_kind = Type_abstract;
-   type_loc = Location.none;
-   type_private = Asttypes.Public;
-   type_manifest = None;
-   type_variance = [];
-   type_newtype_level = None;
-   type_attributes = [];
-   type_immediate = false;
-   type_unboxed = unboxed_false_default_false;
-  }
-
-let decl_abstr_imm = {decl_abstr with type_immediate = true}
-
-let cstr id args =
-  {
-    cd_id = id;
-    cd_args = Cstr_tuple args;
-    cd_res = None;
-    cd_loc = Location.none;
-    cd_attributes = [];
-  }
-
-let ident_false = ident_create "false"
-and ident_true = ident_create "true"
-and ident_void = ident_create "()"
-and ident_nil = ident_create "[]"
-and ident_cons = ident_create "::"
-and ident_none = ident_create "None"
-and ident_some = ident_create "Some"
-let common_initial_env add_type add_extension empty_env =
-  let decl_bool =
-    {decl_abstr with
-     type_kind = Type_variant([cstr ident_false []; cstr ident_true []]);
-     type_immediate = true}
-  and decl_unit =
-    {decl_abstr with
-     type_kind = Type_variant([cstr ident_void []]);
-     type_immediate = true}
-  and decl_exn =
-    {decl_abstr with
-     type_kind = Type_open}
-  and decl_array =
-    let tvar = newgenvar() in
-    {decl_abstr with
-     type_params = [tvar];
-     type_arity = 1;
-     type_variance = [Variance.full]}
-  and decl_list =
-    let tvar = newgenvar() in
-    {decl_abstr with
-     type_params = [tvar];
-     type_arity = 1;
-     type_kind =
-     Type_variant([cstr ident_nil []; cstr ident_cons [tvar; type_list tvar]]);
-     type_variance = [Variance.covariant]}
-  and decl_option =
-    let tvar = newgenvar() in
-    {decl_abstr with
-     type_params = [tvar];
-     type_arity = 1;
-     type_kind = Type_variant([cstr ident_none []; cstr ident_some [tvar]]);
-     type_variance = [Variance.covariant]}
-  and decl_lazy_t =
-    let tvar = newgenvar() in
-    {decl_abstr with
-     type_params = [tvar];
-     type_arity = 1;
-     type_variance = [Variance.covariant]}
-  in
-
-  let add_extension id l =
-    add_extension id
-      { ext_type_path = path_exn;
-        ext_type_params = [];
-        ext_args = Cstr_tuple l;
-        ext_ret_type = None;
-        ext_private = Asttypes.Public;
-        ext_loc = Location.none;
-        ext_attributes = [{Asttypes.txt="ocaml.warn_on_literal_pattern";
-                           loc=Location.none},
-                          Parsetree.PStr[]] }
-  in
-  add_extension ident_match_failure
-                         [newgenty (Ttuple[type_string; type_int; type_int])] (
-  add_extension ident_out_of_memory [] (
-  add_extension ident_stack_overflow [] (
-  add_extension ident_invalid_argument [type_string] (
-  add_extension ident_failure [type_string] (
-  add_extension ident_not_found [] (
-  add_extension ident_sys_blocked_io [] (
-  add_extension ident_sys_error [type_string] (
-  add_extension ident_end_of_file [] (
-  add_extension ident_division_by_zero [] (
-  add_extension ident_assert_failure
-                         [newgenty (Ttuple[type_string; type_int; type_int])] (
-  add_extension ident_undefined_recursive_module
-                         [newgenty (Ttuple[type_string; type_int; type_int])] (
-  add_type ident_int64 decl_abstr (
-
-  add_type ident_lazy_t decl_lazy_t (
-  add_type ident_option decl_option (
-  add_type ident_list decl_list (
-  add_type ident_array decl_array (
-  add_type ident_exn decl_exn (
-  add_type ident_unit decl_unit (
-  add_type ident_bool decl_bool (
-  add_type ident_float decl_abstr (
-  add_type ident_string decl_abstr (
-  add_type ident_int decl_abstr_imm (
-  add_type ident_extension_constructor decl_abstr (
-  add_type ident_floatarray decl_abstr (
-    empty_env)))))))))))))))))))))))))
-
-let build_initial_env add_type add_exception empty_env =
-  let common = common_initial_env add_type add_exception empty_env in
-  let res = add_type ident_bytes decl_abstr common in 
-  let decl_type_char = 
-        {decl_abstr with 
-        type_manifest = Some type_int; 
-        type_private = Private} in 
-    add_type ident_char decl_type_char res 
-  
-  
-let builtin_values =
-  List.map (fun id -> Ident.make_global id; (Ident.name id, id))
-      [ident_match_failure; ident_out_of_memory; ident_stack_overflow;
-       ident_invalid_argument;
-       ident_failure; ident_not_found; ident_sys_error; ident_end_of_file;
-       ident_division_by_zero; ident_sys_blocked_io;
-       ident_assert_failure; ident_undefined_recursive_module ]
-
-(* Start non-predef identifiers at 1000.  This way, more predefs can
-   be defined in this file (above!) without breaking .cmi
-   compatibility. *)
-
-let _ = Ident.set_current_time 999
-let builtin_idents = List.rev !builtin_idents
diff --git a/src/compiler-libs-406/predef.mli b/src/compiler-libs-406/predef.mli
deleted file mode 100644
index 69ef8160..00000000
--- a/src/compiler-libs-406/predef.mli
+++ /dev/null
@@ -1,87 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Predefined type constructors (with special typing rules in typecore) *)
-
-open Types
-
-val type_int: type_expr
-val type_char: type_expr
-val type_string: type_expr
-val type_bytes: type_expr
-val type_float: type_expr
-val type_bool: type_expr
-val type_unit: type_expr
-val type_exn: type_expr
-val type_array: type_expr -> type_expr
-val type_list: type_expr -> type_expr
-val type_option: type_expr -> type_expr
-
-
-val type_int64: type_expr
-val type_lazy_t: type_expr -> type_expr
-val type_extension_constructor:type_expr
-val type_floatarray:type_expr
-
-val path_int: Path.t
-val path_char: Path.t
-val path_string: Path.t
-val path_bytes: Path.t
-val path_float: Path.t
-val path_bool: Path.t
-val path_unit: Path.t
-val path_exn: Path.t
-val path_array: Path.t
-val path_list: Path.t
-val path_option: Path.t
-
-
-val path_int64: Path.t
-val path_lazy_t: Path.t
-val path_extension_constructor: Path.t
-val path_floatarray: Path.t
-
-val path_match_failure: Path.t
-val path_assert_failure : Path.t
-val path_undefined_recursive_module : Path.t
-
-(* To build the initial environment. Since there is a nasty mutual
-   recursion between predef and env, we break it by parameterizing
-   over Env.t, Env.add_type and Env.add_extension. *)
-
-val build_initial_env:
-  (Ident.t -> type_declaration -> 'a -> 'a) ->
-  (Ident.t -> extension_constructor -> 'a -> 'a) ->
-  'a -> 'a 
-
-(* To initialize linker tables *)
-
-val builtin_values: (string * Ident.t) list
-val builtin_idents: (string * Ident.t) list
-
-(** All predefined exceptions, exposed as [Ident.t] for flambda (for
-    building value approximations).
-    The [Ident.t] for division by zero is also exported explicitly
-    so flambda can generate code to raise it. *)
-val ident_division_by_zero: Ident.t
-val all_predef_exns : Ident.t list
-
-type test =
-  | For_sure_yes
-  | For_sure_no 
-  | NA
-
-val type_is_builtin_path_but_option : 
-  Path.t -> test 
diff --git a/src/compiler-libs-406/primitive.ml b/src/compiler-libs-406/primitive.ml
deleted file mode 100644
index ad0504a0..00000000
--- a/src/compiler-libs-406/primitive.ml
+++ /dev/null
@@ -1,100 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Description of primitive functions *)
-
-open Misc
-open Parsetree
-
-type boxed_integer = Pnativeint | Pint32 | Pint64
-
-type native_repr =
-  | Same_as_ocaml_repr
-
-type description =
-  { prim_name: string;         (* Name of primitive  or C function *)
-    prim_arity: int;           (* Number of arguments *)
-    prim_alloc: bool;          (* Does it allocates or raise? *)
-    prim_native_name: string;  (* Name of C function for the nat. code gen. *)
-    prim_native_repr_args: native_repr list;
-    prim_native_repr_res: native_repr }
-
-let coerce : (description -> description -> bool) ref = 
-  ref (fun 
-        (p1 : description) (p2 : description) ->
-        p1 = p2
-      )
-
-
-
-let rec make_native_repr_args arity x =
-  if arity = 0 then
-    []
-  else
-    x :: make_native_repr_args (arity - 1) x
-
-let simple ~name ~arity ~alloc =
-  {prim_name = name;
-   prim_arity = arity;
-   prim_alloc = alloc;
-   prim_native_name = "";
-   prim_native_repr_args = make_native_repr_args arity Same_as_ocaml_repr;
-   prim_native_repr_res = Same_as_ocaml_repr}
-
-let make ~name ~alloc ~native_name ~native_repr_args ~native_repr_res =
-  {prim_name = name;
-   prim_arity = List.length native_repr_args;
-   prim_alloc = alloc;
-   prim_native_name = native_name;
-   prim_native_repr_args = native_repr_args;
-   prim_native_repr_res = native_repr_res}
-
-let parse_declaration valdecl ~native_repr_args ~native_repr_res =
-  let arity = List.length native_repr_args in
-  let name, native_name =
-    match valdecl.pval_prim with
-    | name :: name2 :: _ -> (name, name2)
-    | name :: _ -> (name, "")
-    | [] ->
-        fatal_error "Primitive.parse_declaration"
-  in
-  {prim_name = name;
-   prim_arity = arity;
-   prim_alloc = true;
-   prim_native_name = native_name;
-   prim_native_repr_args = native_repr_args;
-   prim_native_repr_res = native_repr_res}
-
-open Outcometree
-
-let print p osig_val_decl =
-  let prims =
-    if p.prim_native_name <> "" then
-      [p.prim_name; p.prim_native_name]
-    else
-      [p.prim_name]
-  in
-  { osig_val_decl with
-    oval_prims = prims;
-    oval_attributes = [] }
-
-let native_name p =
-  if p.prim_native_name <> ""
-  then p.prim_native_name
-  else p.prim_name
-
-let byte_name p =
-  p.prim_name
-
diff --git a/src/compiler-libs-406/primitive.mli b/src/compiler-libs-406/primitive.mli
deleted file mode 100644
index ecc22456..00000000
--- a/src/compiler-libs-406/primitive.mli
+++ /dev/null
@@ -1,65 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Description of primitive functions *)
-
-type boxed_integer = Pnativeint | Pint32 | Pint64
-
-(* Representation of arguments/result for the native code version
-   of a primitive *)
-type native_repr =
-  | Same_as_ocaml_repr
-
-type description = private
-  { prim_name: string;         (* Name of primitive  or C function *)
-    prim_arity: int;           (* Number of arguments *)
-    prim_alloc: bool;          (* Does it allocates or raise? *)
-    prim_native_name: string;  (* Name of C function for the nat. code gen. *)
-    prim_native_repr_args: native_repr list;
-    prim_native_repr_res: native_repr }
-
-(* Invariant [List.length d.prim_native_repr_args = d.prim_arity] *)
-
-val simple
-  :  name:string
-  -> arity:int
-  -> alloc:bool
-  -> description
-
-val make
-  :  name:string
-  -> alloc:bool
-  -> native_name:string
-  -> native_repr_args: native_repr list
-  -> native_repr_res: native_repr
-  -> description
-
-val parse_declaration
-  :  Parsetree.value_description
-  -> native_repr_args:native_repr list
-  -> native_repr_res:native_repr
-  -> description
-
-val print
-  :  description
-  -> Outcometree.out_val_decl
-  -> Outcometree.out_val_decl
-
-val native_name: description -> string
-val byte_name: description -> string
-
-
-val coerce : 
-  (description -> description -> bool ) ref
\ No newline at end of file
diff --git a/src/compiler-libs-406/subst.ml b/src/compiler-libs-406/subst.ml
deleted file mode 100644
index fb5f9019..00000000
--- a/src/compiler-libs-406/subst.ml
+++ /dev/null
@@ -1,491 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Substitutions *)
-
-open Misc
-open Path
-open Types
-open Btype
-
-type type_replacement =
-  | Path of Path.t
-  | Type_function of { params : type_expr list; body : type_expr }
-
-module PathMap = Map.Make(Path)
-
-type t =
-  { types: type_replacement PathMap.t;
-    modules: Path.t PathMap.t;
-    modtypes: (Ident.t, module_type) Tbl.t;
-    for_saving: bool;
-  }
-
-let identity =
-  { types = PathMap.empty;
-    modules = PathMap.empty;
-    modtypes = Tbl.empty;
-    for_saving = false;
-  }
-
-let add_type_path id p s = { s with types = PathMap.add id (Path p) s.types }
-let add_type id p s = add_type_path (Pident id) p s
-
-let add_type_function id ~params ~body s =
-  { s with types = PathMap.add id (Type_function { params; body }) s.types }
-
-let add_module_path id p s = { s with modules = PathMap.add id p s.modules }
-let add_module id p s = add_module_path (Pident id) p s
-
-let add_modtype id ty s = { s with modtypes = Tbl.add id ty s.modtypes }
-
-let for_saving s = { s with for_saving = true }
-
-let loc s x =
-  if s.for_saving && not !Clflags.keep_locs then Location.none else x
-
-let remove_loc =
-  let open Ast_mapper in
-  {default_mapper with location = (fun _this _loc -> Location.none)}
-
-let is_not_doc = function
-  | ({Location.txt = "ocaml.doc"}, _) -> false
-  | ({Location.txt = "ocaml.text"}, _) -> false
-  | ({Location.txt = "doc"}, _) -> false
-  | ({Location.txt = "text"}, _) -> false
-  | _ -> true
-
-let attrs s x =
-  let x =
-    if s.for_saving && not !Clflags.keep_docs then
-      List.filter is_not_doc x
-    else x
-  in
-    if s.for_saving && not !Clflags.keep_locs
-    then remove_loc.Ast_mapper.attributes remove_loc x
-    else x
-
-let rec module_path s path =
-  try PathMap.find path s.modules
-  with Not_found ->
-    match path with
-    | Pident _ -> path
-    | Pdot(p, n, pos) ->
-       Pdot(module_path s p, n, pos)
-    | Papply(p1, p2) ->
-       Papply(module_path s p1, module_path s p2)
-
-let modtype_path s = function
-    Pident id as p ->
-      begin try
-        match Tbl.find id s.modtypes with
-          | Mty_ident p -> p
-          | _ -> fatal_error "Subst.modtype_path"
-      with Not_found -> p end
-  | Pdot(p, n, pos) ->
-      Pdot(module_path s p, n, pos)
-  | Papply _ ->
-      fatal_error "Subst.modtype_path"
-
-let type_path s path =
-  match PathMap.find path s.types with
-  | Path p -> p
-  | Type_function _ -> assert false
-  | exception Not_found ->
-     match path with
-     | Pident _ -> path
-     | Pdot(p, n, pos) ->
-        Pdot(module_path s p, n, pos)
-     | Papply _ ->
-        fatal_error "Subst.type_path"
-
-let type_path s p =
-  match Path.constructor_typath p with
-  | Regular p -> type_path s p
-  | Cstr (ty_path, cstr) -> Pdot(type_path s ty_path, cstr, nopos)
-  | LocalExt _ -> type_path s p
-  | Ext (p, cstr) -> Pdot(module_path s p, cstr, nopos)
-
-let to_subst_by_type_function s p =
-  match PathMap.find p s.types with
-  | Path _ -> false
-  | Type_function _ -> true
-  | exception Not_found -> false
-
-(* Special type ids for saved signatures *)
-
-let new_id = ref (-1)
-let reset_for_saving () = new_id := -1
-
-let newpersty desc =
-  decr new_id;
-  { desc = desc; level = generic_level; id = !new_id }
-
-(* ensure that all occurrences of 'Tvar None' are physically shared *)
-let tvar_none = Tvar None
-let tunivar_none = Tunivar None
-let norm = function
-  | Tvar None -> tvar_none
-  | Tunivar None -> tunivar_none
-  | d -> d
-
-let ctype_apply_env_empty = ref (fun _ -> assert false)
-
-(* Similar to [Ctype.nondep_type_rec]. *)
-let rec typexp s ty =
-  let ty = repr ty in
-  match ty.desc with
-    Tvar _ | Tunivar _ as desc ->
-      if s.for_saving || ty.id < 0 then
-        let ty' =
-          if s.for_saving then newpersty (norm desc)
-          else newty2 ty.level desc
-        in
-        save_desc ty desc; ty.desc <- Tsubst ty'; ty'
-      else ty
-  | Tsubst ty ->
-      ty
-  | Tfield (m, k, _t1, _t2) when not s.for_saving && m = dummy_method
-      && field_kind_repr k <> Fabsent && (repr ty).level < generic_level ->
-      (* do not copy the type of self when it is not generalized *)
-      ty
-(* cannot do it, since it would omit substitution
-  | Tvariant row when not (static_row row) ->
-      ty
-*)
-  | _ ->
-    let desc = ty.desc in
-    save_desc ty desc;
-    let tm = row_of_type ty in
-    let has_fixed_row =
-      not (is_Tconstr ty) && is_constr_row ~allow_ident:false tm in
-    (* Make a stub *)
-    let ty' = if s.for_saving then newpersty (Tvar None) else newgenvar () in
-    ty.desc <- Tsubst ty';
-    ty'.desc <-
-      begin if has_fixed_row then
-        match tm.desc with (* PR#7348 *)
-          Tconstr (Pdot(m,i,pos), tl, _abbrev) ->
-            let i' = String.sub i 0 (String.length i - 4) in
-            Tconstr(type_path s (Pdot(m,i',pos)), tl, ref Mnil)
-        | _ -> assert false
-      else match desc with
-      | Tconstr (p, args, _abbrev) ->
-         let args = List.map (typexp s) args in
-         begin match PathMap.find p s.types with
-         | exception Not_found -> Tconstr(type_path s p, args, ref Mnil)
-         | Path _ -> Tconstr(type_path s p, args, ref Mnil)
-         | Type_function { params; body } ->
-            (!ctype_apply_env_empty params body args).desc
-         end
-      | Tpackage(p, n, tl) ->
-          Tpackage(modtype_path s p, n, List.map (typexp s) tl)
-      | Tobject (t1, name) ->
-          Tobject (typexp s t1,
-                 ref (match !name with
-                        None -> None
-                      | Some (p, tl) ->
-                         if to_subst_by_type_function s p
-                         then None
-                         else Some (type_path s p, List.map (typexp s) tl)))
-      | Tvariant row ->
-          let row = row_repr row in
-          let more = repr row.row_more in
-          (* We must substitute in a subtle way *)
-          (* Tsubst takes a tuple containing the row var and the variant *)
-          begin match more.desc with
-            Tsubst {desc = Ttuple [_;ty2]} ->
-              (* This variant type has been already copied *)
-              ty.desc <- Tsubst ty2; (* avoid Tlink in the new type *)
-              Tlink ty2
-          | _ ->
-              let dup =
-                s.for_saving || more.level = generic_level || static_row row ||
-                match more.desc with Tconstr _ -> true | _ -> false in
-              (* Various cases for the row variable *)
-              let more' =
-                match more.desc with
-                  Tsubst ty -> ty
-                | Tconstr _ | Tnil -> typexp s more
-                | Tunivar _ | Tvar _ ->
-                    save_desc more more.desc;
-                    if s.for_saving then newpersty (norm more.desc) else
-                    if dup && is_Tvar more then newgenty more.desc else more
-                | _ -> assert false
-              in
-              (* Register new type first for recursion *)
-              more.desc <- Tsubst(newgenty(Ttuple[more';ty']));
-              (* Return a new copy *)
-              let row =
-                copy_row (typexp s) true row (not dup) more' in
-              match row.row_name with
-              | Some (p, tl) ->
-                 Tvariant {row with row_name =
-                                      if to_subst_by_type_function s p
-                                      then None
-                                      else Some (type_path s p, tl)}
-              | None ->
-                  Tvariant row
-          end
-      | Tfield(_label, kind, _t1, t2) when field_kind_repr kind = Fabsent ->
-          Tlink (typexp s t2)
-      | _ -> copy_type_desc (typexp s) desc
-      end;
-    ty'
-
-(*
-   Always make a copy of the type. If this is not done, type levels
-   might not be correct.
-*)
-let type_expr s ty =
-  let ty' = typexp s ty in
-  cleanup_types ();
-  ty'
-
-let label_declaration s l =
-  {
-    ld_id = l.ld_id;
-    ld_mutable = l.ld_mutable;
-    ld_type = typexp s l.ld_type;
-    ld_loc = loc s l.ld_loc;
-    ld_attributes = attrs s l.ld_attributes;
-  }
-
-let constructor_arguments s = function
-  | Cstr_tuple l ->
-      Cstr_tuple (List.map (typexp s) l)
-  | Cstr_record l ->
-      Cstr_record (List.map (label_declaration s) l)
-
-let constructor_declaration s c =
-  {
-    cd_id = c.cd_id;
-    cd_args = constructor_arguments s c.cd_args;
-    cd_res = may_map (typexp s) c.cd_res;
-    cd_loc = loc s c.cd_loc;
-    cd_attributes = attrs s c.cd_attributes;
-  }
-
-let type_declaration s decl =
-  let decl =
-    { type_params = List.map (typexp s) decl.type_params;
-      type_arity = decl.type_arity;
-      type_kind =
-        begin match decl.type_kind with
-          Type_abstract -> Type_abstract
-        | Type_variant cstrs ->
-            Type_variant (List.map (constructor_declaration s) cstrs)
-        | Type_record(lbls, rep) ->
-            Type_record (List.map (label_declaration s) lbls, rep)
-        | Type_open -> Type_open
-        end;
-      type_manifest =
-        begin
-          match decl.type_manifest with
-            None -> None
-          | Some ty -> Some(typexp s ty)
-        end;
-      type_private = decl.type_private;
-      type_variance = decl.type_variance;
-      type_newtype_level = None;
-      type_loc = loc s decl.type_loc;
-      type_attributes = attrs s decl.type_attributes;
-      type_immediate = decl.type_immediate;
-      type_unboxed = decl.type_unboxed;
-    }
-  in
-  cleanup_types ();
-  decl
-
-let class_signature s sign =
-  { csig_self = typexp s sign.csig_self;
-    csig_vars =
-      Vars.map (function (m, v, t) -> (m, v, typexp s t)) sign.csig_vars;
-    csig_concr = sign.csig_concr;
-    csig_inher =
-      List.map (fun (p, tl) -> (type_path s p, List.map (typexp s) tl))
-        sign.csig_inher;
-  }
-
-let rec class_type s =
-  function
-    Cty_constr (p, tyl, cty) ->
-      Cty_constr (type_path s p, List.map (typexp s) tyl, class_type s cty)
-  | Cty_signature sign ->
-      Cty_signature (class_signature s sign)
-  | Cty_arrow (l, ty, cty) ->
-      Cty_arrow (l, typexp s ty, class_type s cty)
-
-let class_declaration s decl =
-  let decl =
-    { cty_params = List.map (typexp s) decl.cty_params;
-      cty_variance = decl.cty_variance;
-      cty_type = class_type s decl.cty_type;
-      cty_path = type_path s decl.cty_path;
-      cty_new =
-        begin match decl.cty_new with
-          None    -> None
-        | Some ty -> Some (typexp s ty)
-        end;
-      cty_loc = loc s decl.cty_loc;
-      cty_attributes = attrs s decl.cty_attributes;
-    }
-  in
-  (* Do not clean up if saving: next is cltype_declaration *)
-  if not s.for_saving then cleanup_types ();
-  decl
-
-let cltype_declaration s decl =
-  let decl =
-    { clty_params = List.map (typexp s) decl.clty_params;
-      clty_variance = decl.clty_variance;
-      clty_type = class_type s decl.clty_type;
-      clty_path = type_path s decl.clty_path;
-      clty_loc = loc s decl.clty_loc;
-      clty_attributes = attrs s decl.clty_attributes;
-    }
-  in
-  (* Do clean up even if saving: type_declaration may be recursive *)
-  cleanup_types ();
-  decl
-
-let class_type s cty =
-  let cty = class_type s cty in
-  cleanup_types ();
-  cty
-
-let value_description s descr =
-  { val_type = type_expr s descr.val_type;
-    val_kind = descr.val_kind;
-    val_loc = loc s descr.val_loc;
-    val_attributes = attrs s descr.val_attributes;
-   }
-
-let extension_constructor s ext =
-  let ext =
-    { ext_type_path = type_path s ext.ext_type_path;
-      ext_type_params = List.map (typexp s) ext.ext_type_params;
-      ext_args = constructor_arguments s ext.ext_args;
-      ext_ret_type = may_map (typexp s) ext.ext_ret_type;
-      ext_private = ext.ext_private;
-      ext_attributes = attrs s ext.ext_attributes;
-      ext_loc = if s.for_saving then Location.none else ext.ext_loc; }
-  in
-    cleanup_types ();
-    ext
-
-let rec rename_bound_idents s idents = function
-    [] -> (List.rev idents, s)
-  | Sig_type(id, _, _) :: sg ->
-      let id' = Ident.rename id in
-      rename_bound_idents (add_type id (Pident id') s) (id' :: idents) sg
-  | Sig_module(id, _, _) :: sg ->
-      let id' = Ident.rename id in
-      rename_bound_idents (add_module id (Pident id') s) (id' :: idents) sg
-  | Sig_modtype(id, _) :: sg ->
-      let id' = Ident.rename id in
-      rename_bound_idents (add_modtype id (Mty_ident(Pident id')) s)
-                          (id' :: idents) sg
-  | (Sig_class(id, _, _) | Sig_class_type(id, _, _)) :: sg ->
-      (* cheat and pretend they are types cf. PR#6650 *)
-      let id' = Ident.rename id in
-      rename_bound_idents (add_type id (Pident id') s) (id' :: idents) sg
-  | (Sig_value(id, _) | Sig_typext(id, _, _)) :: sg ->
-      let id' = Ident.rename id in
-      rename_bound_idents s (id' :: idents) sg
-
-let rec modtype s = function
-    Mty_ident p as mty ->
-      begin match p with
-        Pident id ->
-          begin try Tbl.find id s.modtypes with Not_found -> mty end
-      | Pdot(p, n, pos) ->
-          Mty_ident(Pdot(module_path s p, n, pos))
-      | Papply _ ->
-          fatal_error "Subst.modtype"
-      end
-  | Mty_signature sg ->
-      Mty_signature(signature s sg)
-  | Mty_functor(id, arg, res) ->
-      let id' = Ident.rename id in
-      Mty_functor(id', may_map (modtype s) arg,
-                       modtype (add_module id (Pident id') s) res)
-  | Mty_alias(pres, p) ->
-      Mty_alias(pres, module_path s p)
-
-and signature s sg =
-  (* Components of signature may be mutually recursive (e.g. type declarations
-     or class and type declarations), so first build global renaming
-     substitution... *)
-  let (new_idents, s') = rename_bound_idents s [] sg in
-  (* ... then apply it to each signature component in turn *)
-  List.map2 (signature_component s') sg new_idents
-
-and signature_component s comp newid =
-  match comp with
-    Sig_value(_id, d) ->
-      Sig_value(newid, value_description s d)
-  | Sig_type(_id, d, rs) ->
-      Sig_type(newid, type_declaration s d, rs)
-  | Sig_typext(_id, ext, es) ->
-      Sig_typext(newid, extension_constructor s ext, es)
-  | Sig_module(_id, d, rs) ->
-      Sig_module(newid, module_declaration s d, rs)
-  | Sig_modtype(_id, d) ->
-      Sig_modtype(newid, modtype_declaration s d)
-  | Sig_class(_id, d, rs) ->
-      Sig_class(newid, class_declaration s d, rs)
-  | Sig_class_type(_id, d, rs) ->
-      Sig_class_type(newid, cltype_declaration s d, rs)
-
-and module_declaration s decl =
-  {
-    md_type = modtype s decl.md_type;
-    md_attributes = attrs s decl.md_attributes;
-    md_loc = loc s decl.md_loc;
-  }
-
-and modtype_declaration s decl  =
-  {
-    mtd_type = may_map (modtype s) decl.mtd_type;
-    mtd_attributes = attrs s decl.mtd_attributes;
-    mtd_loc = loc s decl.mtd_loc;
-  }
-
-(* For every binding k |-> d of m1, add k |-> f d to m2
-   and return resulting merged map. *)
-
-let merge_tbls f m1 m2 =
-  Tbl.fold (fun k d accu -> Tbl.add k (f d) accu) m1 m2
-
-let merge_path_maps f m1 m2 =
-  PathMap.fold (fun k d accu -> PathMap.add k (f d) accu) m1 m2
-
-let type_replacement s = function
-  | Path p -> Path (type_path s p)
-  | Type_function { params; body } ->
-     let params = List.map (typexp s) params in
-     let body = typexp s body in
-     Type_function { params; body }
-
-(* Composition of substitutions:
-     apply (compose s1 s2) x = apply s2 (apply s1 x) *)
-
-let compose s1 s2 =
-  { types = merge_path_maps (type_replacement s2) s1.types s2.types;
-    modules = merge_path_maps (module_path s2) s1.modules s2.modules;
-    modtypes = merge_tbls (modtype s2) s1.modtypes s2.modtypes;
-    for_saving = s1.for_saving || s2.for_saving;
-  }
diff --git a/src/compiler-libs-406/subst.mli b/src/compiler-libs-406/subst.mli
deleted file mode 100644
index f81cb4da..00000000
--- a/src/compiler-libs-406/subst.mli
+++ /dev/null
@@ -1,70 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Substitutions *)
-
-open Types
-
-type t
-
-(*
-   Substitutions are used to translate a type from one context to
-   another.  This requires substituting paths for identifiers, and
-   possibly also lowering the level of non-generic variables so that
-   they are inferior to the maximum level of the new context.
-
-   Substitutions can also be used to create a "clean" copy of a type.
-   Indeed, non-variable node of a type are duplicated, with their
-   levels set to generic level.  That way, the resulting type is
-   well-formed (decreasing levels), even if the original one was not.
-*)
-
-val identity: t
-
-val add_type: Ident.t -> Path.t -> t -> t
-val add_type_path: Path.t -> Path.t -> t -> t
-val add_type_function:
-  Path.t -> params:type_expr list -> body:type_expr -> t -> t
-val add_module: Ident.t -> Path.t -> t -> t
-val add_module_path: Path.t -> Path.t -> t -> t
-val add_modtype: Ident.t -> module_type -> t -> t
-val for_saving: t -> t
-val reset_for_saving: unit -> unit
-
-val module_path: t -> Path.t -> Path.t
-val type_path: t -> Path.t -> Path.t
-
-val type_expr: t -> type_expr -> type_expr
-val class_type: t -> class_type -> class_type
-val value_description: t -> value_description -> value_description
-val type_declaration: t -> type_declaration -> type_declaration
-val extension_constructor:
-        t -> extension_constructor -> extension_constructor
-val class_declaration: t -> class_declaration -> class_declaration
-val cltype_declaration: t -> class_type_declaration -> class_type_declaration
-val modtype: t -> module_type -> module_type
-val signature: t -> signature -> signature
-val modtype_declaration: t -> modtype_declaration -> modtype_declaration
-val module_declaration: t -> module_declaration -> module_declaration
-val typexp : t -> Types.type_expr -> Types.type_expr
-val class_signature: t -> class_signature -> class_signature
-
-(* Composition of substitutions:
-     apply (compose s1 s2) x = apply s2 (apply s1 x) *)
-val compose: t -> t -> t
-
-(* A forward reference to be filled in ctype.ml. *)
-val ctype_apply_env_empty:
-  (type_expr list -> type_expr -> type_expr list -> type_expr) ref
diff --git a/src/compiler-libs-406/syntaxerr.ml b/src/compiler-libs-406/syntaxerr.ml
deleted file mode 100644
index 0bb55ab6..00000000
--- a/src/compiler-libs-406/syntaxerr.ml
+++ /dev/null
@@ -1,87 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1997 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Auxiliary type for reporting syntax errors *)
-
-type error =
-    Unclosed of Location.t * string * Location.t * string
-  | Expecting of Location.t * string
-  | Not_expecting of Location.t * string
-  | Applicative_path of Location.t
-  | Variable_in_scope of Location.t * string
-  | Other of Location.t
-  | Ill_formed_ast of Location.t * string
-  | Invalid_package_type of Location.t * string
-
-exception Error of error
-exception Escape_error
-
-let prepare_error = function
-  | Unclosed(opening_loc, opening, closing_loc, closing) ->
-      Location.errorf ~loc:closing_loc
-        ~sub:[
-          Location.errorf ~loc:opening_loc
-            "This '%s' might be unmatched" opening
-        ]
-        ~if_highlight:
-          (Printf.sprintf "Syntax error: '%s' expected, \
-                           the highlighted '%s' might be unmatched"
-             closing opening)
-        "Syntax error: '%s' expected" closing
-
-  | Expecting (loc, nonterm) ->
-      Location.errorf ~loc "Syntax error: %s expected." nonterm
-  | Not_expecting (loc, nonterm) ->
-      Location.errorf ~loc "Syntax error: %s not expected." nonterm
-  | Applicative_path loc ->
-      Location.errorf ~loc
-        "Syntax error: applicative paths of the form F(X).t \
-         are not supported when the option -no-app-func is set."
-  | Variable_in_scope (loc, var) ->
-      Location.errorf ~loc
-        "In this scoped type, variable '%s \
-         is reserved for the local type %s."
-         var var
-  | Other loc ->
-      Location.errorf ~loc "Syntax error"
-  | Ill_formed_ast (loc, s) ->
-      Location.errorf ~loc "broken invariant in parsetree: %s" s
-  | Invalid_package_type (loc, s) ->
-      Location.errorf ~loc "invalid package type: %s" s
-
-let () =
-  Location.register_error_of_exn
-    (function
-      | Error err -> Some (prepare_error err)
-      | _ -> None
-    )
-
-
-let report_error ppf err =
-  Location.report_error ppf (prepare_error err)
-
-let location_of_error = function
-  | Unclosed(l,_,_,_)
-  | Applicative_path l
-  | Variable_in_scope(l,_)
-  | Other l
-  | Not_expecting (l, _)
-  | Ill_formed_ast (l, _)
-  | Invalid_package_type (l, _)
-  | Expecting (l, _) -> l
-
-
-let ill_formed_ast loc s =
-  raise (Error (Ill_formed_ast (loc, s)))
diff --git a/src/compiler-libs-406/syntaxerr.mli b/src/compiler-libs-406/syntaxerr.mli
deleted file mode 100644
index 319eb579..00000000
--- a/src/compiler-libs-406/syntaxerr.mli
+++ /dev/null
@@ -1,37 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1997 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Auxiliary type for reporting syntax errors *)
-
-open Format
-
-type error =
-    Unclosed of Location.t * string * Location.t * string
-  | Expecting of Location.t * string
-  | Not_expecting of Location.t * string
-  | Applicative_path of Location.t
-  | Variable_in_scope of Location.t * string
-  | Other of Location.t
-  | Ill_formed_ast of Location.t * string
-  | Invalid_package_type of Location.t * string
-
-exception Error of error
-exception Escape_error
-
-val report_error: formatter -> error -> unit
- (** @deprecated Use {!Location.error_of_exn}, {!Location.report_error}. *)
-
-val location_of_error: error -> Location.t
-val ill_formed_ast: Location.t -> string -> 'a
diff --git a/src/compiler-libs-406/tast_mapper.ml b/src/compiler-libs-406/tast_mapper.ml
deleted file mode 100644
index 512132ef..00000000
--- a/src/compiler-libs-406/tast_mapper.ml
+++ /dev/null
@@ -1,611 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                        Alain Frisch, LexiFi                            *)
-(*                                                                        *)
-(*   Copyright 2015 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Asttypes
-open Typedtree
-
-(* TODO: add 'methods' for location, attribute, extension,
-   open_description, include_declaration, include_description *)
-
-type mapper =
-  {
-    case: mapper -> case -> case;
-    cases: mapper -> case list -> case list;
-    class_description: mapper -> class_description -> class_description;
-
-    class_signature: mapper -> class_signature -> class_signature;
-    class_type: mapper -> class_type -> class_type;
-    class_type_declaration: mapper -> class_type_declaration ->
-      class_type_declaration;
-    class_type_field: mapper -> class_type_field -> class_type_field;
-    env: mapper -> Env.t -> Env.t;
-    expr: mapper -> expression -> expression;
-    extension_constructor: mapper -> extension_constructor ->
-      extension_constructor;
-    module_binding: mapper -> module_binding -> module_binding;
-    module_coercion: mapper -> module_coercion -> module_coercion;
-    module_declaration: mapper -> module_declaration -> module_declaration;
-    module_expr: mapper -> module_expr -> module_expr;
-    module_type: mapper -> module_type -> module_type;
-    module_type_declaration:
-      mapper -> module_type_declaration -> module_type_declaration;
-    package_type: mapper -> package_type -> package_type;
-    pat: mapper -> pattern -> pattern;
-    row_field: mapper -> row_field -> row_field;
-    object_field: mapper -> object_field -> object_field;
-    signature: mapper -> signature -> signature;
-    signature_item: mapper -> signature_item -> signature_item;
-    structure: mapper -> structure -> structure;
-    structure_item: mapper -> structure_item -> structure_item;
-    typ: mapper -> core_type -> core_type;
-    type_declaration: mapper -> type_declaration -> type_declaration;
-    type_declarations: mapper -> (rec_flag * type_declaration list) ->
-      (rec_flag * type_declaration list);
-    type_extension: mapper -> type_extension -> type_extension;
-    type_kind: mapper -> type_kind -> type_kind;
-    value_binding: mapper -> value_binding -> value_binding;
-    value_bindings: mapper -> (rec_flag * value_binding list) ->
-      (rec_flag * value_binding list);
-    value_description: mapper -> value_description -> value_description;
-    with_constraint: mapper -> with_constraint -> with_constraint;
-  }
-
-let id x = x
-let tuple2 f1 f2 (x, y) = (f1 x, f2 y)
-let tuple3 f1 f2 f3 (x, y, z) = (f1 x, f2 y, f3 z)
-let opt f = function None -> None | Some x -> Some (f x)
-
-let structure sub {str_items; str_type; str_final_env} =
-  {
-    str_items = List.map (sub.structure_item sub) str_items;
-    str_final_env = sub.env sub str_final_env;
-    str_type;
-  }
-
-let class_infos sub f x =
-  {x with
-   ci_params = List.map (tuple2 (sub.typ sub) id) x.ci_params;
-   ci_expr = f x.ci_expr;
-  }
-
-let module_type_declaration sub x =
-  let mtd_type = opt (sub.module_type sub) x.mtd_type in
-  {x with mtd_type}
-
-let module_declaration sub x =
-  let md_type = sub.module_type sub x.md_type in
-  {x with md_type}
-
-let include_infos f x = {x with incl_mod = f x.incl_mod}
-
-let class_type_declaration sub x =
-  class_infos sub (sub.class_type sub) x
-
-
-let structure_item sub {str_desc; str_loc; str_env} =
-  let str_env = sub.env sub str_env in
-  let str_desc =
-    match str_desc with
-    | Tstr_eval (exp, attrs) -> Tstr_eval (sub.expr sub exp, attrs)
-    | Tstr_value (rec_flag, list) ->
-        let (rec_flag, list) = sub.value_bindings sub (rec_flag, list) in
-        Tstr_value (rec_flag, list)
-    | Tstr_primitive v -> Tstr_primitive (sub.value_description sub v)
-    | Tstr_type (rec_flag, list) ->
-        let (rec_flag, list) = sub.type_declarations sub (rec_flag, list) in
-        Tstr_type (rec_flag, list)
-    | Tstr_typext te -> Tstr_typext (sub.type_extension sub te)
-    | Tstr_exception ext -> Tstr_exception (sub.extension_constructor sub ext)
-    | Tstr_module mb -> Tstr_module (sub.module_binding sub mb)
-    | Tstr_recmodule list ->
-        Tstr_recmodule (List.map (sub.module_binding sub) list)
-    | Tstr_modtype x -> Tstr_modtype (sub.module_type_declaration sub x)
-    | Tstr_class () -> Tstr_class ()
-    | Tstr_class_type list ->
-        Tstr_class_type
-          (List.map (tuple3 id id (sub.class_type_declaration sub)) list)
-    | Tstr_include incl ->
-        Tstr_include (include_infos (sub.module_expr sub) incl)
-    | Tstr_open _
-    | Tstr_attribute _ as d -> d
-  in
-  {str_desc; str_env; str_loc}
-
-let value_description sub x =
-  let val_desc = sub.typ sub x.val_desc in
-  {x with val_desc}
-
-let label_decl sub x =
-  let ld_type = sub.typ sub x.ld_type in
-  {x with ld_type}
-
-let constructor_args sub = function
-  | Cstr_tuple l -> Cstr_tuple (List.map (sub.typ sub) l)
-  | Cstr_record l -> Cstr_record (List.map (label_decl sub) l)
-
-let constructor_decl sub cd =
-  let cd_args = constructor_args sub cd.cd_args in
-  let cd_res = opt (sub.typ sub) cd.cd_res in
-  {cd with cd_args; cd_res}
-
-let type_kind sub = function
-  | Ttype_abstract -> Ttype_abstract
-  | Ttype_variant list -> Ttype_variant (List.map (constructor_decl sub) list)
-  | Ttype_record list -> Ttype_record (List.map (label_decl sub) list)
-  | Ttype_open -> Ttype_open
-
-let type_declaration sub x =
-  let typ_cstrs =
-    List.map
-      (tuple3 (sub.typ sub) (sub.typ sub) id)
-      x.typ_cstrs
-  in
-  let typ_kind = sub.type_kind sub x.typ_kind in
-  let typ_manifest = opt (sub.typ sub) x.typ_manifest in
-  let typ_params = List.map (tuple2 (sub.typ sub) id) x.typ_params in
-  {x with typ_cstrs; typ_kind; typ_manifest; typ_params}
-
-let type_declarations sub (rec_flag, list) =
-  (rec_flag, List.map (sub.type_declaration sub) list)
-
-let type_extension sub x =
-  let tyext_params = List.map (tuple2 (sub.typ sub) id) x.tyext_params in
-  let tyext_constructors =
-    List.map (sub.extension_constructor sub) x.tyext_constructors
-  in
-  {x with tyext_constructors; tyext_params}
-
-let extension_constructor sub x =
-  let ext_kind =
-    match x.ext_kind with
-      Text_decl(ctl, cto) ->
-        Text_decl(constructor_args sub ctl, opt (sub.typ sub) cto)
-    | Text_rebind _ as d -> d
-  in
-  {x with ext_kind}
-
-let pat sub x =
-  let extra = function
-    | Tpat_type _
-    | Tpat_unpack as d -> d
-    | Tpat_open (path,loc,env) ->  Tpat_open (path, loc, sub.env sub env)
-    | Tpat_constraint ct -> Tpat_constraint (sub.typ sub ct)
-  in
-  let pat_env = sub.env sub x.pat_env in
-  let pat_extra = List.map (tuple3 extra id id) x.pat_extra in
-  let pat_desc =
-    match x.pat_desc with
-    | Tpat_any
-    | Tpat_var _
-    | Tpat_constant _ as d -> d
-    | Tpat_tuple l -> Tpat_tuple (List.map (sub.pat sub) l)
-    | Tpat_construct (loc, cd, l) ->
-        Tpat_construct (loc, cd, List.map (sub.pat sub) l)
-    | Tpat_variant (l, po, rd) -> Tpat_variant (l, opt (sub.pat sub) po, rd)
-    | Tpat_record (l, closed) ->
-        Tpat_record (List.map (tuple3 id id (sub.pat sub)) l, closed)
-    | Tpat_array l -> Tpat_array (List.map (sub.pat sub) l)
-    | Tpat_or (p1, p2, rd) ->
-        Tpat_or (sub.pat sub p1, sub.pat sub p2, rd)
-    | Tpat_alias (p, id, s) -> Tpat_alias (sub.pat sub p, id, s)
-    | Tpat_lazy p -> Tpat_lazy (sub.pat sub p)
-  in
-  {x with pat_extra; pat_desc; pat_env}
-
-let expr sub x =
-  let extra = function
-    | Texp_constraint cty ->
-        Texp_constraint (sub.typ sub cty)
-    | Texp_coerce (cty1, cty2) ->
-        Texp_coerce (opt (sub.typ sub) cty1, sub.typ sub cty2)
-    | Texp_open (ovf, path, loc, env) ->
-        Texp_open (ovf, path, loc, sub.env sub env)
-    | Texp_newtype _ as d -> d
-    | Texp_poly cto -> Texp_poly (opt (sub.typ sub) cto)
-  in
-  let exp_extra = List.map (tuple3 extra id id) x.exp_extra in
-  let exp_env = sub.env sub x.exp_env in
-  let exp_desc =
-    match x.exp_desc with
-    | Texp_ident _
-    | Texp_constant _ as d -> d
-    | Texp_let (rec_flag, list, exp) ->
-        let (rec_flag, list) = sub.value_bindings sub (rec_flag, list) in
-        Texp_let (rec_flag, list, sub.expr sub exp)
-    | Texp_function { arg_label; param; cases; partial; } ->
-        Texp_function { arg_label; param; cases = sub.cases sub cases;
-          partial; }
-    | Texp_apply (exp, list) ->
-        Texp_apply (
-          sub.expr sub exp,
-          List.map (tuple2 id (opt (sub.expr sub))) list
-        )
-    | Texp_match (exp, cases, exn_cases, p) ->
-        Texp_match (
-          sub.expr sub exp,
-          sub.cases sub cases,
-          sub.cases sub exn_cases,
-          p
-        )
-    | Texp_try (exp, cases) ->
-        Texp_try (
-          sub.expr sub exp,
-          sub.cases sub cases
-        )
-    | Texp_tuple list ->
-        Texp_tuple (List.map (sub.expr sub) list)
-    | Texp_construct (lid, cd, args) ->
-        Texp_construct (lid, cd, List.map (sub.expr sub) args)
-    | Texp_variant (l, expo) ->
-        Texp_variant (l, opt (sub.expr sub) expo)
-    | Texp_record { fields; representation; extended_expression } ->
-        let fields = Array.map (function
-            | label, Kept t -> label, Kept t
-            | label, Overridden (lid, exp) ->
-                label, Overridden (lid, sub.expr sub exp))
-            fields
-        in
-        Texp_record {
-          fields; representation;
-          extended_expression = opt (sub.expr sub) extended_expression;
-        }
-    | Texp_field (exp, lid, ld) ->
-        Texp_field (sub.expr sub exp, lid, ld)
-    | Texp_setfield (exp1, lid, ld, exp2) ->
-        Texp_setfield (
-          sub.expr sub exp1,
-          lid,
-          ld,
-          sub.expr sub exp2
-        )
-    | Texp_array list ->
-        Texp_array (List.map (sub.expr sub) list)
-    | Texp_ifthenelse (exp1, exp2, expo) ->
-        Texp_ifthenelse (
-          sub.expr sub exp1,
-          sub.expr sub exp2,
-          opt (sub.expr sub) expo
-        )
-    | Texp_sequence (exp1, exp2) ->
-        Texp_sequence (
-          sub.expr sub exp1,
-          sub.expr sub exp2
-        )
-    | Texp_while (exp1, exp2) ->
-        Texp_while (
-          sub.expr sub exp1,
-          sub.expr sub exp2
-        )
-    | Texp_for (id, p, exp1, exp2, dir, exp3) ->
-        Texp_for (
-          id,
-          p,
-          sub.expr sub exp1,
-          sub.expr sub exp2,
-          dir,
-          sub.expr sub exp3
-        )
-    | Texp_send (exp, meth, expo) ->
-        Texp_send
-          (
-            sub.expr sub exp,
-            meth,
-            opt (sub.expr sub) expo
-          )
-    | Texp_new _
-    | Texp_instvar _ as d -> d
-    | Texp_setinstvar _
-    | Texp_override _ ->
-      assert false
-    | Texp_letmodule (id, s, mexpr, exp) ->
-        Texp_letmodule (
-          id,
-          s,
-          sub.module_expr sub mexpr,
-          sub.expr sub exp
-        )
-    | Texp_letexception (cd, exp) ->
-        Texp_letexception (
-          sub.extension_constructor sub cd,
-          sub.expr sub exp
-        )
-    | Texp_assert exp ->
-        Texp_assert (sub.expr sub exp)
-    | Texp_lazy exp ->
-        Texp_lazy (sub.expr sub exp)
-    | Texp_object () ->
-        Texp_object ()
-    | Texp_pack mexpr ->
-        Texp_pack (sub.module_expr sub mexpr)
-    | Texp_unreachable ->
-        Texp_unreachable
-    | Texp_extension_constructor _ as e ->
-        e
-  in
-  {x with exp_extra; exp_desc; exp_env}
-
-
-let package_type sub x =
-  let pack_fields = List.map (tuple2 id (sub.typ sub)) x.pack_fields in
-  {x with pack_fields}
-
-let signature sub x =
-  let sig_final_env = sub.env sub x.sig_final_env in
-  let sig_items = List.map (sub.signature_item sub) x.sig_items in
-  {x with sig_items; sig_final_env}
-
-let signature_item sub x =
-  let sig_env = sub.env sub x.sig_env in
-  let sig_desc =
-    match x.sig_desc with
-    | Tsig_value v ->
-        Tsig_value (sub.value_description sub v)
-    | Tsig_type (rec_flag, list) ->
-        let (rec_flag, list) = sub.type_declarations sub (rec_flag, list) in
-        Tsig_type (rec_flag, list)
-    | Tsig_typext te ->
-        Tsig_typext (sub.type_extension sub te)
-    | Tsig_exception ext ->
-        Tsig_exception (sub.extension_constructor sub ext)
-    | Tsig_module x ->
-        Tsig_module (sub.module_declaration sub x)
-    | Tsig_recmodule list ->
-        Tsig_recmodule (List.map (sub.module_declaration sub) list)
-    | Tsig_modtype x ->
-        Tsig_modtype (sub.module_type_declaration sub x)
-    | Tsig_include incl ->
-        Tsig_include (include_infos (sub.module_type sub) incl)
-    | Tsig_class list ->
-        Tsig_class (List.map (sub.class_description sub) list)
-    | Tsig_class_type list ->
-        Tsig_class_type
-          (List.map (sub.class_type_declaration sub) list)
-    | Tsig_open _
-    | Tsig_attribute _ as d -> d
-  in
-  {x with sig_desc; sig_env}
-
-let class_description sub x =
-  class_infos sub (sub.class_type sub) x
-
-let module_type sub x =
-  let mty_env = sub.env sub x.mty_env in
-  let mty_desc =
-    match x.mty_desc with
-    | Tmty_ident _
-    | Tmty_alias _ as d -> d
-    | Tmty_signature sg -> Tmty_signature (sub.signature sub sg)
-    | Tmty_functor (id, s, mtype1, mtype2) ->
-        Tmty_functor (
-          id,
-          s,
-          opt (sub.module_type sub) mtype1,
-          sub.module_type sub mtype2
-        )
-    | Tmty_with (mtype, list) ->
-        Tmty_with (
-          sub.module_type sub mtype,
-          List.map (tuple3 id id (sub.with_constraint sub)) list
-        )
-    | Tmty_typeof mexpr ->
-        Tmty_typeof (sub.module_expr sub mexpr)
-  in
-  {x with mty_desc; mty_env}
-
-let with_constraint sub = function
-  | Twith_type decl -> Twith_type (sub.type_declaration sub decl)
-  | Twith_typesubst decl -> Twith_typesubst (sub.type_declaration sub decl)
-  | Twith_module _
-  | Twith_modsubst _ as d -> d
-
-let module_coercion sub = function
-  | Tcoerce_none -> Tcoerce_none
-  | Tcoerce_functor (c1,c2) ->
-      Tcoerce_functor (sub.module_coercion sub c1, sub.module_coercion sub c2)
-  | Tcoerce_alias (p, c1) ->
-      Tcoerce_alias (p, sub.module_coercion sub c1)
-  | Tcoerce_structure (l1, l2, runtime_fields) ->
-      let l1' = List.map (fun (i,c) -> i, sub.module_coercion sub c) l1 in
-      let l2' =
-        List.map (fun (id,i,c) -> id, i, sub.module_coercion sub c) l2
-      in
-      Tcoerce_structure (l1', l2', runtime_fields)
-  | Tcoerce_primitive pc ->
-      Tcoerce_primitive {pc with pc_env = sub.env sub pc.pc_env}
-
-let module_expr sub x =
-  let mod_env = sub.env sub x.mod_env in
-  let mod_desc =
-    match x.mod_desc with
-    | Tmod_ident _ as d -> d
-    | Tmod_structure st -> Tmod_structure (sub.structure sub st)
-    | Tmod_functor (id, s, mtype, mexpr) ->
-        Tmod_functor (
-          id,
-          s,
-          opt (sub.module_type sub) mtype,
-          sub.module_expr sub mexpr
-        )
-    | Tmod_apply (mexp1, mexp2, c) ->
-        Tmod_apply (
-          sub.module_expr sub mexp1,
-          sub.module_expr sub mexp2,
-          sub.module_coercion sub c
-        )
-    | Tmod_constraint (mexpr, mt, Tmodtype_implicit, c) ->
-        Tmod_constraint (sub.module_expr sub mexpr, mt, Tmodtype_implicit,
-                         sub.module_coercion sub c)
-    | Tmod_constraint (mexpr, mt, Tmodtype_explicit mtype, c) ->
-        Tmod_constraint (
-          sub.module_expr sub mexpr,
-          mt,
-          Tmodtype_explicit (sub.module_type sub mtype),
-          sub.module_coercion sub c
-        )
-    | Tmod_unpack (exp, mty) ->
-        Tmod_unpack
-          (
-            sub.expr sub exp,
-            mty
-          )
-  in
-  {x with mod_desc; mod_env}
-
-let module_binding sub x =
-  let mb_expr = sub.module_expr sub x.mb_expr in
-  {x with mb_expr}
-
-
-let class_type sub x =
-  let cltyp_env = sub.env sub x.cltyp_env in
-  let cltyp_desc =
-    match x.cltyp_desc with
-    | Tcty_signature csg -> Tcty_signature (sub.class_signature sub csg)
-    | Tcty_constr (path, lid, list) ->
-        Tcty_constr (
-          path,
-          lid,
-          List.map (sub.typ sub) list
-        )
-    | Tcty_arrow (label, ct, cl) ->
-        Tcty_arrow
-          (label,
-           sub.typ sub ct,
-           sub.class_type sub cl
-          )
-    | Tcty_open (ovf, p, lid, env, e) ->
-        Tcty_open (ovf, p, lid, sub.env sub env, sub.class_type sub e)
-  in
-  {x with cltyp_desc; cltyp_env}
-
-let class_signature sub x =
-  let csig_self = sub.typ sub x.csig_self in
-  let csig_fields = List.map (sub.class_type_field sub) x.csig_fields in
-  {x with csig_self; csig_fields}
-
-let class_type_field sub x =
-  let ctf_desc =
-    match x.ctf_desc with
-    | Tctf_inherit ct ->
-        Tctf_inherit (sub.class_type sub ct)
-    | Tctf_val (s, mut, virt, ct) ->
-        Tctf_val (s, mut, virt, sub.typ sub ct)
-    | Tctf_method (s, priv, virt, ct) ->
-        Tctf_method (s, priv, virt, sub.typ sub ct)
-    | Tctf_constraint  (ct1, ct2) ->
-        Tctf_constraint (sub.typ sub ct1, sub.typ sub ct2)
-    | Tctf_attribute _ as d -> d
-  in
-  {x with ctf_desc}
-
-let typ sub x =
-  let ctyp_env = sub.env sub x.ctyp_env in
-  let ctyp_desc =
-    match x.ctyp_desc with
-    | Ttyp_any
-    | Ttyp_var _ as d -> d
-    | Ttyp_arrow (label, ct1, ct2) ->
-        Ttyp_arrow (label, sub.typ sub ct1, sub.typ sub ct2)
-    | Ttyp_tuple list -> Ttyp_tuple (List.map (sub.typ sub) list)
-    | Ttyp_constr (path, lid, list) ->
-        Ttyp_constr (path, lid, List.map (sub.typ sub) list)
-    | Ttyp_object (list, closed) ->
-        Ttyp_object ((List.map (sub.object_field sub) list), closed)
-    | Ttyp_class (path, lid, list) ->
-        Ttyp_class
-          (path,
-           lid,
-           List.map (sub.typ sub) list
-          )
-    | Ttyp_alias (ct, s) ->
-        Ttyp_alias (sub.typ sub ct, s)
-    | Ttyp_variant (list, closed, labels) ->
-        Ttyp_variant (List.map (sub.row_field sub) list, closed, labels)
-    | Ttyp_poly (sl, ct) ->
-        Ttyp_poly (sl, sub.typ sub ct)
-    | Ttyp_package pack ->
-        Ttyp_package (sub.package_type sub pack)
-  in
-  {x with ctyp_desc; ctyp_env}
-
-
-let row_field sub = function
-  | Ttag (label, attrs, b, list) ->
-      Ttag (label, attrs, b, List.map (sub.typ sub) list)
-  | Tinherit ct -> Tinherit (sub.typ sub ct)
-
-let object_field sub = function
-  | OTtag (label, attrs, ct) ->
-      OTtag (label, attrs, (sub.typ sub ct))
-  | OTinherit ct -> OTinherit (sub.typ sub ct)
-
-
-
-let value_bindings sub (rec_flag, list) =
-  (rec_flag, List.map (sub.value_binding sub) list)
-
-let cases sub l =
-  List.map (sub.case sub) l
-
-let case sub {c_lhs; c_guard; c_rhs} =
-  {
-    c_lhs = sub.pat sub c_lhs;
-    c_guard = opt (sub.expr sub) c_guard;
-    c_rhs = sub.expr sub c_rhs;
-  }
-
-let value_binding sub x =
-  let vb_pat = sub.pat sub x.vb_pat in
-  let vb_expr = sub.expr sub x.vb_expr in
-  {x with vb_pat; vb_expr}
-
-let env _sub x = x
-
-let default =
-  {
-    case;
-    cases;
-    class_description;
-    class_signature;
-    class_type;
-    class_type_declaration;
-    class_type_field;
-    env;
-    expr;
-    extension_constructor;
-    module_binding;
-    module_coercion;
-    module_declaration;
-    module_expr;
-    module_type;
-    module_type_declaration;
-    package_type;
-    pat;
-    row_field;
-    object_field;
-    signature;
-    signature_item;
-    structure;
-    structure_item;
-    typ;
-    type_declaration;
-    type_declarations;
-    type_extension;
-    type_kind;
-    value_binding;
-    value_bindings;
-    value_description;
-    with_constraint;
-  }
diff --git a/src/compiler-libs-406/tast_mapper.mli b/src/compiler-libs-406/tast_mapper.mli
deleted file mode 100644
index 4fd87b69..00000000
--- a/src/compiler-libs-406/tast_mapper.mli
+++ /dev/null
@@ -1,64 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*                        Alain Frisch, LexiFi                            *)
-(*                                                                        *)
-(*   Copyright 2015 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-open Asttypes
-open Typedtree
-
-(** {1 A generic Typedtree mapper} *)
-
-type mapper =
-  {
-    case: mapper -> case -> case;
-    cases: mapper -> case list -> case list;
-    class_description: mapper -> class_description -> class_description;
-    class_signature: mapper -> class_signature -> class_signature;
-    class_type: mapper -> class_type -> class_type;
-    class_type_declaration: mapper -> class_type_declaration ->
-      class_type_declaration;
-    class_type_field: mapper -> class_type_field -> class_type_field;
-    env: mapper -> Env.t -> Env.t;
-    expr: mapper -> expression -> expression;
-    extension_constructor: mapper -> extension_constructor ->
-      extension_constructor;
-    module_binding: mapper -> module_binding -> module_binding;
-    module_coercion: mapper -> module_coercion -> module_coercion;
-    module_declaration: mapper -> module_declaration -> module_declaration;
-    module_expr: mapper -> module_expr -> module_expr;
-    module_type: mapper -> module_type -> module_type;
-    module_type_declaration:
-      mapper -> module_type_declaration -> module_type_declaration;
-    package_type: mapper -> package_type -> package_type;
-    pat: mapper -> pattern -> pattern;
-    row_field: mapper -> row_field -> row_field;
-    object_field: mapper -> object_field -> object_field;
-    signature: mapper -> signature -> signature;
-    signature_item: mapper -> signature_item -> signature_item;
-    structure: mapper -> structure -> structure;
-    structure_item: mapper -> structure_item -> structure_item;
-    typ: mapper -> core_type -> core_type;
-    type_declaration: mapper -> type_declaration -> type_declaration;
-    type_declarations: mapper -> (rec_flag * type_declaration list) ->
-      (rec_flag * type_declaration list);
-    type_extension: mapper -> type_extension -> type_extension;
-    type_kind: mapper -> type_kind -> type_kind;
-    value_binding: mapper -> value_binding -> value_binding;
-    value_bindings: mapper -> (rec_flag * value_binding list) ->
-      (rec_flag * value_binding list);
-    value_description: mapper -> value_description -> value_description;
-    with_constraint: mapper -> with_constraint -> with_constraint;
-  }
-
-
-val default: mapper
diff --git a/src/compiler-libs-406/tbl.ml b/src/compiler-libs-406/tbl.ml
deleted file mode 100644
index fa278b43..00000000
--- a/src/compiler-libs-406/tbl.ml
+++ /dev/null
@@ -1,123 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-type ('k, 'v) t =
-    Empty
-  | Node of ('k, 'v) t * 'k * 'v * ('k, 'v) t * int
-
-let empty = Empty
-
-let height = function
-    Empty -> 0
-  | Node(_,_,_,_,h) -> h
-
-let create l x d r =
-  let hl = height l and hr = height r in
-  Node(l, x, d, r, (if hl >= hr then hl + 1 else hr + 1))
-
-let bal l x d r =
-  let hl = height l and hr = height r in
-  if hl > hr + 1 then
-    match l with
-    | Node (ll, lv, ld, lr, _) when height ll >= height lr ->
-        create ll lv ld (create lr x d r)
-    | Node (ll, lv, ld, Node (lrl, lrv, lrd, lrr, _), _) ->
-        create (create ll lv ld lrl) lrv lrd (create lrr x d r)
-    | _ -> assert false
-  else if hr > hl + 1 then
-    match r with
-    | Node (rl, rv, rd, rr, _) when height rr >= height rl ->
-        create (create l x d rl) rv rd rr
-    | Node (Node (rll, rlv, rld, rlr, _), rv, rd, rr, _) ->
-        create (create l x d rll) rlv rld (create rlr rv rd rr)
-    | _ -> assert false
-  else
-    create l x d r
-
-let rec add x data = function
-    Empty ->
-      Node(Empty, x, data, Empty, 1)
-  | Node(l, v, d, r, h) ->
-      let c = compare x v in
-      if c = 0 then
-        Node(l, x, data, r, h)
-      else if c < 0 then
-        bal (add x data l) v d r
-      else
-        bal l v d (add x data r)
-
-let rec find x = function
-    Empty ->
-      raise Not_found
-  | Node(l, v, d, r, _) ->
-      let c = compare x v in
-      if c = 0 then d
-      else find x (if c < 0 then l else r)
-
-let rec find_str (x : string) = function
-    Empty ->
-      raise Not_found
-  | Node(l, v, d, r, _) ->
-      let c = compare x v in
-      if c = 0 then d
-      else find_str x (if c < 0 then l else r)
-
-let rec mem x = function
-    Empty -> false
-  | Node(l, v, _d, r, _) ->
-      let c = compare x v in
-      c = 0 || mem x (if c < 0 then l else r)
-
-let rec merge t1 t2 =
-  match (t1, t2) with
-    (Empty, t) -> t
-  | (t, Empty) -> t
-  | (Node(l1, v1, d1, r1, _h1), Node(l2, v2, d2, r2, _h2)) ->
-      bal l1 v1 d1 (bal (merge r1 l2) v2 d2 r2)
-
-let rec remove x = function
-    Empty ->
-      Empty
-  | Node(l, v, d, r, _h) ->
-      let c = compare x v in
-      if c = 0 then
-        merge l r
-      else if c < 0 then
-        bal (remove x l) v d r
-      else
-        bal l v d (remove x r)
-
-let rec iter f = function
-    Empty -> ()
-  | Node(l, v, d, r, _) ->
-      iter f l; f v d; iter f r
-
-let rec map f = function
-    Empty -> Empty
-  | Node(l, v, d, r, h) -> Node(map f l, v, f v d, map f r, h)
-
-let rec fold f m accu =
-  match m with
-  | Empty -> accu
-  | Node(l, v, d, r, _) ->
-      fold f r (f v d (fold f l accu))
-
-open Format
-
-let print print_key print_data ppf tbl =
-  let print_tbl ppf tbl =
-    iter (fun k d -> fprintf ppf "@[<2>%a ->@ %a;@]@ " print_key k print_data d)
-      tbl in
-  fprintf ppf "@[<hv 2>[[%a]]@]" print_tbl tbl
diff --git a/src/compiler-libs-406/tbl.mli b/src/compiler-libs-406/tbl.mli
deleted file mode 100644
index d23b959c..00000000
--- a/src/compiler-libs-406/tbl.mli
+++ /dev/null
@@ -1,34 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Association tables from any ordered type to any type.
-   We use the generic ordering to compare keys. *)
-
-type ('k, 'v) t
-
-val empty: ('k, 'v) t
-val add: 'k -> 'v -> ('k, 'v) t -> ('k, 'v) t
-val find: 'k -> ('k, 'v) t -> 'v
-val find_str: string -> (string, 'v) t -> 'v
-val mem: 'k -> ('k, 'v) t -> bool
-val remove: 'k -> ('k,  'v) t -> ('k, 'v) t
-val iter: ('k -> 'v -> unit) -> ('k, 'v) t -> unit
-val map: ('k -> 'v1 -> 'v2) -> ('k, 'v1) t -> ('k, 'v2) t
-val fold: ('k -> 'v -> 'acc -> 'acc) -> ('k, 'v) t -> 'acc -> 'acc
-
-open Format
-
-val print: (formatter -> 'k -> unit) -> (formatter -> 'v -> unit) ->
-           formatter -> ('k, 'v) t -> unit
diff --git a/src/compiler-libs-406/typedtree.ml b/src/compiler-libs-406/typedtree.ml
deleted file mode 100644
index 8aa47a14..00000000
--- a/src/compiler-libs-406/typedtree.ml
+++ /dev/null
@@ -1,569 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Abstract syntax tree after typing *)
-
-open Misc
-open Asttypes
-open Types
-
-(* Value expressions for the core language *)
-
-type partial = Partial | Total
-
-type attribute = Parsetree.attribute
-type attributes = attribute list
-
-type pattern =
-  { pat_desc: pattern_desc;
-    pat_loc: Location.t;
-    pat_extra : (pat_extra * Location.t * attribute list) list;
-    pat_type: type_expr;
-    mutable pat_env: Env.t;
-    pat_attributes: attribute list;
-   }
-
-and pat_extra =
-  | Tpat_constraint of core_type
-  | Tpat_type of Path.t * Longident.t loc
-  | Tpat_open of Path.t * Longident.t loc * Env.t
-  | Tpat_unpack
-
-and pattern_desc =
-    Tpat_any
-  | Tpat_var of Ident.t * string loc
-  | Tpat_alias of pattern * Ident.t * string loc
-  | Tpat_constant of constant
-  | Tpat_tuple of pattern list
-  | Tpat_construct of
-      Longident.t loc * constructor_description * pattern list
-  | Tpat_variant of label * pattern option * row_desc ref
-  | Tpat_record of
-      (Longident.t loc * label_description * pattern) list *
-        closed_flag
-  | Tpat_array of pattern list
-  | Tpat_or of pattern * pattern * row_desc option
-  | Tpat_lazy of pattern
-
-and expression =
-  { exp_desc: expression_desc;
-    exp_loc: Location.t;
-    exp_extra: (exp_extra * Location.t * attribute list) list;
-    exp_type: type_expr;
-    exp_env: Env.t;
-    exp_attributes: attribute list;
-   }
-
-and exp_extra =
-  | Texp_constraint of core_type
-  | Texp_coerce of core_type option * core_type
-  | Texp_open of override_flag * Path.t * Longident.t loc * Env.t
-  | Texp_poly of core_type option
-  | Texp_newtype of string
-
-and expression_desc =
-    Texp_ident of Path.t * Longident.t loc * Types.value_description
-  | Texp_constant of constant
-  | Texp_let of rec_flag * value_binding list * expression
-  | Texp_function of { arg_label : arg_label; param : Ident.t;
-      cases : case list; partial : partial; }
-  | Texp_apply of expression * (arg_label * expression option) list
-  | Texp_match of expression * case list * case list * partial
-  | Texp_try of expression * case list
-  | Texp_tuple of expression list
-  | Texp_construct of
-      Longident.t loc * constructor_description * expression list
-  | Texp_variant of label * expression option
-  | Texp_record of {
-      fields : ( Types.label_description * record_label_definition ) array;
-      representation : Types.record_representation;
-      extended_expression : expression option;
-    }
-  | Texp_field of expression * Longident.t loc * label_description
-  | Texp_setfield of
-      expression * Longident.t loc * label_description * expression
-  | Texp_array of expression list
-  | Texp_ifthenelse of expression * expression * expression option
-  | Texp_sequence of expression * expression
-  | Texp_while of expression * expression
-  | Texp_for of
-      Ident.t * Parsetree.pattern * expression * expression * direction_flag *
-        expression
-  | Texp_send of expression * meth * expression option
-  | Texp_new of unit
-  | Texp_instvar of unit
-  | Texp_setinstvar of unit
-  | Texp_override of unit
-  | Texp_letmodule of Ident.t * string loc * module_expr * expression
-  | Texp_letexception of extension_constructor * expression
-  | Texp_assert of expression
-  | Texp_lazy of expression
-  | Texp_object of unit
-  | Texp_pack of module_expr
-  | Texp_unreachable
-  | Texp_extension_constructor of Longident.t loc * Path.t
-
-and meth =
-    Tmeth_name of string
-
-and case =
-    {
-     c_lhs: pattern;
-     c_guard: expression option;
-     c_rhs: expression;
-    }
-
-and record_label_definition =
-  | Kept of Types.type_expr
-  | Overridden of Longident.t loc * expression
-
-(* Value expressions for the class language *)
-
-
-
-
-
-(* Value expressions for the module language *)
-
-and module_expr =
-  { mod_desc: module_expr_desc;
-    mod_loc: Location.t;
-    mod_type: Types.module_type;
-    mod_env: Env.t;
-    mod_attributes: attribute list;
-   }
-
-and module_type_constraint =
-  Tmodtype_implicit
-| Tmodtype_explicit of module_type
-
-and module_expr_desc =
-    Tmod_ident of Path.t * Longident.t loc
-  | Tmod_structure of structure
-  | Tmod_functor of Ident.t * string loc * module_type option * module_expr
-  | Tmod_apply of module_expr * module_expr * module_coercion
-  | Tmod_constraint of
-      module_expr * Types.module_type * module_type_constraint * module_coercion
-  | Tmod_unpack of expression * Types.module_type
-
-and structure = {
-  str_items : structure_item list;
-  str_type : Types.signature;
-  str_final_env : Env.t;
-}
-
-and structure_item =
-  { str_desc : structure_item_desc;
-    str_loc : Location.t;
-    str_env : Env.t
-  }
-
-and structure_item_desc =
-    Tstr_eval of expression * attributes
-  | Tstr_value of rec_flag * value_binding list
-  | Tstr_primitive of value_description
-  | Tstr_type of rec_flag * type_declaration list
-  | Tstr_typext of type_extension
-  | Tstr_exception of extension_constructor
-  | Tstr_module of module_binding
-  | Tstr_recmodule of module_binding list
-  | Tstr_modtype of module_type_declaration
-  | Tstr_open of open_description
-  | Tstr_class of unit
-  | Tstr_class_type of (Ident.t * string loc * class_type_declaration) list
-  | Tstr_include of include_declaration
-  | Tstr_attribute of attribute
-
-and module_binding =
-    {
-     mb_id: Ident.t;
-     mb_name: string loc;
-     mb_expr: module_expr;
-     mb_attributes: attribute list;
-     mb_loc: Location.t;
-    }
-
-and value_binding =
-  {
-    vb_pat: pattern;
-    vb_expr: expression;
-    vb_attributes: attributes;
-    vb_loc: Location.t;
-  }
-
-and module_coercion =
-    Tcoerce_none
-  | Tcoerce_structure of (int * module_coercion) list *
-                         (Ident.t * int * module_coercion) list *
-                         string list (* runtime fields *)
-  | Tcoerce_functor of module_coercion * module_coercion
-  | Tcoerce_primitive of primitive_coercion
-  | Tcoerce_alias of Path.t * module_coercion
-
-and module_type =
-  { mty_desc: module_type_desc;
-    mty_type : Types.module_type;
-    mty_env : Env.t;
-    mty_loc: Location.t;
-    mty_attributes: attribute list;
-   }
-
-and module_type_desc =
-    Tmty_ident of Path.t * Longident.t loc
-  | Tmty_signature of signature
-  | Tmty_functor of Ident.t * string loc * module_type option * module_type
-  | Tmty_with of module_type * (Path.t * Longident.t loc * with_constraint) list
-  | Tmty_typeof of module_expr
-  | Tmty_alias of Path.t * Longident.t loc
-
-(* Keep primitive type information for type-based lambda-code specialization *)
-and primitive_coercion =
-  {
-    pc_desc: Primitive.description;
-    pc_type: type_expr;
-    pc_env: Env.t;
-    pc_loc : Location.t;
-    pc_id : Ident.t; (*RE:Added *)
-  }
-
-and signature = {
-  sig_items : signature_item list;
-  sig_type : Types.signature;
-  sig_final_env : Env.t;
-}
-
-and signature_item =
-  { sig_desc: signature_item_desc;
-    sig_env : Env.t; (* BINANNOT ADDED *)
-    sig_loc: Location.t }
-
-and signature_item_desc =
-    Tsig_value of value_description
-  | Tsig_type of rec_flag * type_declaration list
-  | Tsig_typext of type_extension
-  | Tsig_exception of extension_constructor
-  | Tsig_module of module_declaration
-  | Tsig_recmodule of module_declaration list
-  | Tsig_modtype of module_type_declaration
-  | Tsig_open of open_description
-  | Tsig_include of include_description
-  | Tsig_class of class_description list
-  | Tsig_class_type of class_type_declaration list
-  | Tsig_attribute of attribute
-
-and module_declaration =
-    {
-     md_id: Ident.t;
-     md_name: string loc;
-     md_type: module_type;
-     md_attributes: attribute list;
-     md_loc: Location.t;
-    }
-
-and module_type_declaration =
-    {
-     mtd_id: Ident.t;
-     mtd_name: string loc;
-     mtd_type: module_type option;
-     mtd_attributes: attribute list;
-     mtd_loc: Location.t;
-    }
-
-and open_description =
-    {
-     open_path: Path.t;
-     open_txt: Longident.t loc;
-     open_override: override_flag;
-     open_loc: Location.t;
-     open_attributes: attribute list;
-    }
-
-and 'a include_infos =
-    {
-     incl_mod: 'a;
-     incl_type: Types.signature;
-     incl_loc: Location.t;
-     incl_attributes: attribute list;
-    }
-
-and include_description = module_type include_infos
-
-and include_declaration = module_expr include_infos
-
-and with_constraint =
-    Twith_type of type_declaration
-  | Twith_module of Path.t * Longident.t loc
-  | Twith_typesubst of type_declaration
-  | Twith_modsubst of Path.t * Longident.t loc
-
-and core_type =
-(* mutable because of [Typeclass.declare_method] *)
-  { mutable ctyp_desc : core_type_desc;
-    mutable ctyp_type : type_expr;
-    ctyp_env : Env.t; (* BINANNOT ADDED *)
-    ctyp_loc : Location.t;
-    ctyp_attributes: attribute list;
-   }
-
-and core_type_desc =
-    Ttyp_any
-  | Ttyp_var of string
-  | Ttyp_arrow of arg_label * core_type * core_type
-  | Ttyp_tuple of core_type list
-  | Ttyp_constr of Path.t * Longident.t loc * core_type list
-  | Ttyp_object of object_field list * closed_flag
-  | Ttyp_class of Path.t * Longident.t loc * core_type list
-  | Ttyp_alias of core_type * string
-  | Ttyp_variant of row_field list * closed_flag * label list option
-  | Ttyp_poly of string list * core_type
-  | Ttyp_package of package_type
-
-and package_type = {
-  pack_path : Path.t;
-  pack_fields : (Longident.t loc * core_type) list;
-  pack_type : Types.module_type;
-  pack_txt : Longident.t loc;
-}
-
-and row_field =
-    Ttag of string loc * attributes * bool * core_type list
-  | Tinherit of core_type
-
-and object_field =
-  | OTtag of string loc * attributes * core_type
-  | OTinherit of core_type
-
-and value_description =
-  { val_id: Ident.t;
-    val_name: string loc;
-    val_desc: core_type;
-    val_val: Types.value_description;
-    val_prim: string list;
-    val_loc: Location.t;
-    val_attributes: attribute list;
-    }
-
-and type_declaration =
-  { typ_id: Ident.t;
-    typ_name: string loc;
-    typ_params: (core_type * variance) list;
-    typ_type: Types.type_declaration;
-    typ_cstrs: (core_type * core_type * Location.t) list;
-    typ_kind: type_kind;
-    typ_private: private_flag;
-    typ_manifest: core_type option;
-    typ_loc: Location.t;
-    typ_attributes: attribute list;
-   }
-
-and type_kind =
-    Ttype_abstract
-  | Ttype_variant of constructor_declaration list
-  | Ttype_record of label_declaration list
-  | Ttype_open
-
-and label_declaration =
-    {
-     ld_id: Ident.t;
-     ld_name: string loc;
-     ld_mutable: mutable_flag;
-     ld_type: core_type;
-     ld_loc: Location.t;
-     ld_attributes: attribute list;
-    }
-
-and constructor_declaration =
-    {
-     cd_id: Ident.t;
-     cd_name: string loc;
-     cd_args: constructor_arguments;
-     cd_res: core_type option;
-     cd_loc: Location.t;
-     cd_attributes: attribute list;
-    }
-
-and constructor_arguments =
-  | Cstr_tuple of core_type list
-  | Cstr_record of label_declaration list
-
-and type_extension =
-  {
-    tyext_path: Path.t;
-    tyext_txt: Longident.t loc;
-    tyext_params: (core_type * variance) list;
-    tyext_constructors: extension_constructor list;
-    tyext_private: private_flag;
-    tyext_attributes: attribute list;
-  }
-
-and extension_constructor =
-  {
-    ext_id: Ident.t;
-    ext_name: string loc;
-    ext_type: Types.extension_constructor;
-    ext_kind: extension_constructor_kind;
-    ext_loc: Location.t;
-    ext_attributes: attribute list;
-  }
-
-and extension_constructor_kind =
-    Text_decl of constructor_arguments * core_type option
-  | Text_rebind of Path.t * Longident.t loc
-
-and class_type =
-    {
-     cltyp_desc: class_type_desc;
-     cltyp_type: Types.class_type;
-     cltyp_env: Env.t;
-     cltyp_loc: Location.t;
-     cltyp_attributes: attribute list;
-    }
-
-and class_type_desc =
-    Tcty_constr of Path.t * Longident.t loc * core_type list
-  | Tcty_signature of class_signature
-  | Tcty_arrow of arg_label * core_type * class_type
-  | Tcty_open of override_flag * Path.t * Longident.t loc * Env.t * class_type
-
-and class_signature = {
-    csig_self: core_type;
-    csig_fields: class_type_field list;
-    csig_type: Types.class_signature;
-  }
-
-and class_type_field = {
-    ctf_desc: class_type_field_desc;
-    ctf_loc: Location.t;
-    ctf_attributes: attribute list;
-  }
-
-and class_type_field_desc =
-  | Tctf_inherit of class_type
-  | Tctf_val of (string * mutable_flag * virtual_flag * core_type)
-  | Tctf_method of (string * private_flag * virtual_flag * core_type)
-  | Tctf_constraint of (core_type * core_type)
-  | Tctf_attribute of attribute
-
-
-and class_description =
-  class_type class_infos
-
-and class_type_declaration =
-  class_type class_infos
-
-and 'a class_infos =
-  { ci_virt: virtual_flag;
-    ci_params: (core_type * variance) list;
-    ci_id_name: string loc;
-    ci_id_class: Ident.t;
-    ci_id_class_type: Ident.t;
-    ci_id_object: Ident.t;
-    ci_id_typehash: Ident.t;
-    ci_expr: 'a;
-    ci_decl: Types.class_declaration;
-    ci_type_decl: Types.class_type_declaration;
-    ci_loc: Location.t;
-    ci_attributes: attribute list;
-   }
-
-(* Auxiliary functions over the a.s.t. *)
-
-let iter_pattern_desc f = function
-  | Tpat_alias(p, _, _) -> f p
-  | Tpat_tuple patl -> List.iter f patl
-  | Tpat_construct(_, _, patl) -> List.iter f patl
-  | Tpat_variant(_, pat, _) -> may f pat
-  | Tpat_record (lbl_pat_list, _) ->
-      List.iter (fun (_, _, pat) -> f pat) lbl_pat_list
-  | Tpat_array patl -> List.iter f patl
-  | Tpat_or(p1, p2, _) -> f p1; f p2
-  | Tpat_lazy p -> f p
-  | Tpat_any
-  | Tpat_var _
-  | Tpat_constant _ -> ()
-
-let map_pattern_desc f d =
-  match d with
-  | Tpat_alias (p1, id, s) ->
-      Tpat_alias (f p1, id, s)
-  | Tpat_tuple pats ->
-      Tpat_tuple (List.map f pats)
-  | Tpat_record (lpats, closed) ->
-      Tpat_record (List.map (fun (lid, l,p) -> lid, l, f p) lpats, closed)
-  | Tpat_construct (lid, c,pats) ->
-      Tpat_construct (lid, c, List.map f pats)
-  | Tpat_array pats ->
-      Tpat_array (List.map f pats)
-  | Tpat_lazy p1 -> Tpat_lazy (f p1)
-  | Tpat_variant (x1, Some p1, x2) ->
-      Tpat_variant (x1, Some (f p1), x2)
-  | Tpat_or (p1,p2,path) ->
-      Tpat_or (f p1, f p2, path)
-  | Tpat_var _
-  | Tpat_constant _
-  | Tpat_any
-  | Tpat_variant (_,None,_) -> d
-
-(* List the identifiers bound by a pattern or a let *)
-
-let idents = ref([]: (Ident.t * string loc) list)
-
-let rec bound_idents pat =
-  match pat.pat_desc with
-  | Tpat_var (id,s) -> idents := (id,s) :: !idents
-  | Tpat_alias(p, id, s ) ->
-      bound_idents p; idents := (id,s) :: !idents
-  | Tpat_or(p1, _, _) ->
-      (* Invariant : both arguments binds the same variables *)
-      bound_idents p1
-  | d -> iter_pattern_desc bound_idents d
-
-let pat_bound_idents pat =
-  idents := [];
-  bound_idents pat;
-  let res = !idents in
-  idents := [];
-  List.map fst res
-
-let rev_let_bound_idents_with_loc bindings =
-  idents := [];
-  List.iter (fun vb -> bound_idents vb.vb_pat) bindings;
-  let res = !idents in idents := []; res
-
-let let_bound_idents_with_loc pat_expr_list =
-  List.rev(rev_let_bound_idents_with_loc pat_expr_list)
-
-let rev_let_bound_idents pat = List.map fst (rev_let_bound_idents_with_loc pat)
-let let_bound_idents pat = List.map  fst (let_bound_idents_with_loc pat)
-
-let alpha_var env id = List.assoc id env
-
-let rec alpha_pat env p = match p.pat_desc with
-| Tpat_var (id, s) -> (* note the ``Not_found'' case *)
-    {p with pat_desc =
-     try Tpat_var (alpha_var env id, s) with
-     | Not_found -> Tpat_any}
-| Tpat_alias (p1, id, s) ->
-    let new_p =  alpha_pat env p1 in
-    begin try
-      {p with pat_desc = Tpat_alias (new_p, alpha_var env id, s)}
-    with
-    | Not_found -> new_p
-    end
-| d ->
-    {p with pat_desc = map_pattern_desc (alpha_pat env) d}
-
-let mkloc = Location.mkloc
-let mknoloc = Location.mknoloc
diff --git a/src/compiler-libs-406/typedtree.mli b/src/compiler-libs-406/typedtree.mli
deleted file mode 100644
index fac00f22..00000000
--- a/src/compiler-libs-406/typedtree.mli
+++ /dev/null
@@ -1,616 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** Abstract syntax tree after typing *)
-
-
-(** By comparison with {!Parsetree}:
-    - Every {!Longindent.t} is accompanied by a resolved {!Path.t}.
-
-*)
-
-open Asttypes
-open Types
-
-(* Value expressions for the core language *)
-
-type partial = Partial | Total
-
-(** {1 Extension points} *)
-
-type attribute = Parsetree.attribute
-type attributes = attribute list
-
-(** {1 Core language} *)
-
-type pattern =
-  { pat_desc: pattern_desc;
-    pat_loc: Location.t;
-    pat_extra : (pat_extra * Location.t * attributes) list;
-    pat_type: type_expr;
-    mutable pat_env: Env.t;
-    pat_attributes: attributes;
-   }
-
-and pat_extra =
-  | Tpat_constraint of core_type
-        (** P : T          { pat_desc = P
-                           ; pat_extra = (Tpat_constraint T, _, _) :: ... }
-         *)
-  | Tpat_type of Path.t * Longident.t loc
-        (** #tconst        { pat_desc = disjunction
-                           ; pat_extra = (Tpat_type (P, "tconst"), _, _) :: ...}
-
-                           where [disjunction] is a [Tpat_or _] representing the
-                           branches of [tconst].
-         *)
-  | Tpat_open of Path.t * Longident.t loc * Env.t
-  | Tpat_unpack
-        (** (module P)     { pat_desc  = Tpat_var "P"
-                           ; pat_extra = (Tpat_unpack, _, _) :: ... }
-         *)
-
-and pattern_desc =
-    Tpat_any
-        (** _ *)
-  | Tpat_var of Ident.t * string loc
-        (** x *)
-  | Tpat_alias of pattern * Ident.t * string loc
-        (** P as a *)
-  | Tpat_constant of constant
-        (** 1, 'a', "true", 1.0, 1l, 1L, 1n *)
-  | Tpat_tuple of pattern list
-        (** (P1, ..., Pn)
-
-            Invariant: n >= 2
-         *)
-  | Tpat_construct of
-      Longident.t loc * constructor_description * pattern list
-        (** C                []
-            C P              [P]
-            C (P1, ..., Pn)  [P1; ...; Pn]
-          *)
-  | Tpat_variant of label * pattern option * row_desc ref
-        (** `A             (None)
-            `A P           (Some P)
-
-            See {!Types.row_desc} for an explanation of the last parameter.
-         *)
-  | Tpat_record of
-      (Longident.t loc * label_description * pattern) list *
-        closed_flag
-        (** { l1=P1; ...; ln=Pn }     (flag = Closed)
-            { l1=P1; ...; ln=Pn; _}   (flag = Open)
-
-            Invariant: n > 0
-         *)
-  | Tpat_array of pattern list
-        (** [| P1; ...; Pn |] *)
-  | Tpat_or of pattern * pattern * row_desc option
-        (** P1 | P2
-
-            [row_desc] = [Some _] when translating [Ppat_type _],
-                         [None] otherwise.
-         *)
-  | Tpat_lazy of pattern
-        (** lazy P *)
-
-and expression =
-  { exp_desc: expression_desc;
-    exp_loc: Location.t;
-    exp_extra: (exp_extra * Location.t * attributes) list;
-    exp_type: type_expr;
-    exp_env: Env.t;
-    exp_attributes: attributes;
-   }
-
-and exp_extra =
-  | Texp_constraint of core_type
-        (** E : T *)
-  | Texp_coerce of core_type option * core_type
-        (** E :> T           [Texp_coerce (None, T)]
-            E : T0 :> T      [Texp_coerce (Some T0, T)]
-         *)
-  | Texp_open of override_flag * Path.t * Longident.t loc * Env.t
-        (** let open[!] M in    [Texp_open (!, P, M, env)]
-                                where [env] is the environment after opening [P]
-         *)
-  | Texp_poly of core_type option
-        (** Used for method bodies. *)
-  | Texp_newtype of string
-        (** fun (type t) ->  *)
-
-and expression_desc =
-    Texp_ident of Path.t * Longident.t loc * Types.value_description
-        (** x
-            M.x
-         *)
-  | Texp_constant of constant
-        (** 1, 'a', "true", 1.0, 1l, 1L, 1n *)
-  | Texp_let of rec_flag * value_binding list * expression
-        (** let P1 = E1 and ... and Pn = EN in E       (flag = Nonrecursive)
-            let rec P1 = E1 and ... and Pn = EN in E   (flag = Recursive)
-         *)
-  | Texp_function of { arg_label : arg_label; param : Ident.t;
-      cases : case list; partial : partial; }
-        (** [Pexp_fun] and [Pexp_function] both translate to [Texp_function].
-            See {!Parsetree} for more details.
-
-            [param] is the identifier that is to be used to name the
-            parameter of the function.
-
-            partial =
-              [Partial] if the pattern match is partial
-              [Total] otherwise.
-         *)
-  | Texp_apply of expression * (arg_label * expression option) list
-        (** E0 ~l1:E1 ... ~ln:En
-
-            The expression can be None if the expression is abstracted over
-            this argument. It currently appears when a label is applied.
-
-            For example:
-            let f x ~y = x + y in
-            f ~y:3
-
-            The resulting typedtree for the application is:
-            Texp_apply (Texp_ident "f/1037",
-                        [(Nolabel, None);
-                         (Labelled "y", Some (Texp_constant Const_int 3))
-                        ])
-         *)
-  | Texp_match of expression * case list * case list * partial
-        (** match E0 with
-            | P1 -> E1
-            | P2 -> E2
-            | exception P3 -> E3
-
-            [Texp_match (E0, [(P1, E1); (P2, E2)], [(P3, E3)], _)]
-         *)
-  | Texp_try of expression * case list
-        (** try E with P1 -> E1 | ... | PN -> EN *)
-  | Texp_tuple of expression list
-        (** (E1, ..., EN) *)
-  | Texp_construct of
-      Longident.t loc * constructor_description * expression list
-        (** C                []
-            C E              [E]
-            C (E1, ..., En)  [E1;...;En]
-         *)
-  | Texp_variant of label * expression option
-  | Texp_record of {
-      fields : ( Types.label_description * record_label_definition ) array;
-      representation : Types.record_representation;
-      extended_expression : expression option;
-    }
-        (** { l1=P1; ...; ln=Pn }           (extended_expression = None)
-            { E0 with l1=P1; ...; ln=Pn }   (extended_expression = Some E0)
-
-            Invariant: n > 0
-
-            If the type is { l1: t1; l2: t2 }, the expression
-            { E0 with t2=P2 } is represented as
-            Texp_record
-              { fields = [| l1, Kept t1; l2 Override P2 |]; representation;
-                extended_expression = Some E0 }
-        *)
-  | Texp_field of expression * Longident.t loc * label_description
-  | Texp_setfield of
-      expression * Longident.t loc * label_description * expression
-  | Texp_array of expression list
-  | Texp_ifthenelse of expression * expression * expression option
-  | Texp_sequence of expression * expression
-  | Texp_while of expression * expression
-  | Texp_for of
-      Ident.t * Parsetree.pattern * expression * expression * direction_flag *
-        expression
-  | Texp_send of expression * meth * expression option
-  | Texp_new of unit
-  | Texp_instvar of unit
-  | Texp_setinstvar of unit
-  | Texp_override of unit
-  | Texp_letmodule of Ident.t * string loc * module_expr * expression
-  | Texp_letexception of extension_constructor * expression
-  | Texp_assert of expression
-  | Texp_lazy of expression
-  | Texp_object of unit
-  | Texp_pack of module_expr
-  | Texp_unreachable
-  | Texp_extension_constructor of Longident.t loc * Path.t
-
-and meth =
-    Tmeth_name of string
-
-and case =
-    {
-     c_lhs: pattern;
-     c_guard: expression option;
-     c_rhs: expression;
-    }
-
-and record_label_definition =
-  | Kept of Types.type_expr
-  | Overridden of Longident.t loc * expression
-
-
-
-(* Value expressions for the module language *)
-
-and module_expr =
-  { mod_desc: module_expr_desc;
-    mod_loc: Location.t;
-    mod_type: Types.module_type;
-    mod_env: Env.t;
-    mod_attributes: attributes;
-   }
-
-(** Annotations for [Tmod_constraint]. *)
-and module_type_constraint =
-  | Tmodtype_implicit
-  (** The module type constraint has been synthesized during typechecking. *)
-  | Tmodtype_explicit of module_type
-  (** The module type was in the source file. *)
-
-and module_expr_desc =
-    Tmod_ident of Path.t * Longident.t loc
-  | Tmod_structure of structure
-  | Tmod_functor of Ident.t * string loc * module_type option * module_expr
-  | Tmod_apply of module_expr * module_expr * module_coercion
-  | Tmod_constraint of
-      module_expr * Types.module_type * module_type_constraint * module_coercion
-    (** ME          (constraint = Tmodtype_implicit)
-        (ME : MT)   (constraint = Tmodtype_explicit MT)
-     *)
-  | Tmod_unpack of expression * Types.module_type
-
-and structure = {
-  str_items : structure_item list;
-  str_type : Types.signature;
-  str_final_env : Env.t;
-}
-
-and structure_item =
-  { str_desc : structure_item_desc;
-    str_loc : Location.t;
-    str_env : Env.t
-  }
-
-and structure_item_desc =
-    Tstr_eval of expression * attributes
-  | Tstr_value of rec_flag * value_binding list
-  | Tstr_primitive of value_description
-  | Tstr_type of rec_flag * type_declaration list
-  | Tstr_typext of type_extension
-  | Tstr_exception of extension_constructor
-  | Tstr_module of module_binding
-  | Tstr_recmodule of module_binding list
-  | Tstr_modtype of module_type_declaration
-  | Tstr_open of open_description
-  | Tstr_class of unit
-  | Tstr_class_type of (Ident.t * string loc * class_type_declaration) list
-  | Tstr_include of include_declaration
-  | Tstr_attribute of attribute
-
-and module_binding =
-    {
-     mb_id: Ident.t;
-     mb_name: string loc;
-     mb_expr: module_expr;
-     mb_attributes: attributes;
-     mb_loc: Location.t;
-    }
-
-and value_binding =
-  {
-    vb_pat: pattern;
-    vb_expr: expression;
-    vb_attributes: attributes;
-    vb_loc: Location.t;
-  }
-
-and module_coercion =
-    Tcoerce_none
-  | Tcoerce_structure of (int * module_coercion) list *
-                         (Ident.t * int * module_coercion) list *
-                         string list (* runtime fields *)
-  | Tcoerce_functor of module_coercion * module_coercion
-  | Tcoerce_primitive of primitive_coercion
-  | Tcoerce_alias of Path.t * module_coercion
-
-and module_type =
-  { mty_desc: module_type_desc;
-    mty_type : Types.module_type;
-    mty_env : Env.t;
-    mty_loc: Location.t;
-    mty_attributes: attributes;
-   }
-
-and module_type_desc =
-    Tmty_ident of Path.t * Longident.t loc
-  | Tmty_signature of signature
-  | Tmty_functor of Ident.t * string loc * module_type option * module_type
-  | Tmty_with of module_type * (Path.t * Longident.t loc * with_constraint) list
-  | Tmty_typeof of module_expr
-  | Tmty_alias of Path.t * Longident.t loc
-
-and primitive_coercion =
-  {
-    pc_desc: Primitive.description;
-    pc_type: type_expr;
-    pc_env: Env.t;
-    pc_loc : Location.t;
-    pc_id : Ident.t;
-  }
-
-and signature = {
-  sig_items : signature_item list;
-  sig_type : Types.signature;
-  sig_final_env : Env.t;
-}
-
-and signature_item =
-  { sig_desc: signature_item_desc;
-    sig_env : Env.t; (* BINANNOT ADDED *)
-    sig_loc: Location.t }
-
-and signature_item_desc =
-    Tsig_value of value_description
-  | Tsig_type of rec_flag * type_declaration list
-  | Tsig_typext of type_extension
-  | Tsig_exception of extension_constructor
-  | Tsig_module of module_declaration
-  | Tsig_recmodule of module_declaration list
-  | Tsig_modtype of module_type_declaration
-  | Tsig_open of open_description
-  | Tsig_include of include_description
-  | Tsig_class of class_description list
-  | Tsig_class_type of class_type_declaration list
-  | Tsig_attribute of attribute
-
-and module_declaration =
-    {
-     md_id: Ident.t;
-     md_name: string loc;
-     md_type: module_type;
-     md_attributes: attributes;
-     md_loc: Location.t;
-    }
-
-and module_type_declaration =
-    {
-     mtd_id: Ident.t;
-     mtd_name: string loc;
-     mtd_type: module_type option;
-     mtd_attributes: attributes;
-     mtd_loc: Location.t;
-    }
-
-and open_description =
-    {
-     open_path: Path.t;
-     open_txt: Longident.t loc;
-     open_override: override_flag;
-     open_loc: Location.t;
-     open_attributes: attribute list;
-    }
-
-and 'a include_infos =
-    {
-     incl_mod: 'a;
-     incl_type: Types.signature;
-     incl_loc: Location.t;
-     incl_attributes: attribute list;
-    }
-
-and include_description = module_type include_infos
-
-and include_declaration = module_expr include_infos
-
-and with_constraint =
-    Twith_type of type_declaration
-  | Twith_module of Path.t * Longident.t loc
-  | Twith_typesubst of type_declaration
-  | Twith_modsubst of Path.t * Longident.t loc
-
-and core_type =
-  { mutable ctyp_desc : core_type_desc;
-      (** mutable because of [Typeclass.declare_method] *)
-    mutable ctyp_type : type_expr;
-      (** mutable because of [Typeclass.declare_method] *)
-    ctyp_env : Env.t; (* BINANNOT ADDED *)
-    ctyp_loc : Location.t;
-    ctyp_attributes: attributes;
-   }
-
-and core_type_desc =
-    Ttyp_any
-  | Ttyp_var of string
-  | Ttyp_arrow of arg_label * core_type * core_type
-  | Ttyp_tuple of core_type list
-  | Ttyp_constr of Path.t * Longident.t loc * core_type list
-  | Ttyp_object of object_field list * closed_flag
-  | Ttyp_class of Path.t * Longident.t loc * core_type list
-  | Ttyp_alias of core_type * string
-  | Ttyp_variant of row_field list * closed_flag * label list option
-  | Ttyp_poly of string list * core_type
-  | Ttyp_package of package_type
-
-and package_type = {
-  pack_path : Path.t;
-  pack_fields : (Longident.t loc * core_type) list;
-  pack_type : Types.module_type;
-  pack_txt : Longident.t loc;
-}
-
-and row_field =
-    Ttag of string loc * attributes * bool * core_type list
-  | Tinherit of core_type
-
-and object_field =
-  | OTtag of string loc * attributes * core_type
-  | OTinherit of core_type
-
-and value_description =
-  { val_id: Ident.t;
-    val_name: string loc;
-    val_desc: core_type;
-    val_val: Types.value_description;
-    val_prim: string list;
-    val_loc: Location.t;
-    val_attributes: attributes;
-    }
-
-and type_declaration =
-  {
-    typ_id: Ident.t;
-    typ_name: string loc;
-    typ_params: (core_type * variance) list;
-    typ_type: Types.type_declaration;
-    typ_cstrs: (core_type * core_type * Location.t) list;
-    typ_kind: type_kind;
-    typ_private: private_flag;
-    typ_manifest: core_type option;
-    typ_loc: Location.t;
-    typ_attributes: attributes;
-   }
-
-and type_kind =
-    Ttype_abstract
-  | Ttype_variant of constructor_declaration list
-  | Ttype_record of label_declaration list
-  | Ttype_open
-
-and label_declaration =
-    {
-     ld_id: Ident.t;
-     ld_name: string loc;
-     ld_mutable: mutable_flag;
-     ld_type: core_type;
-     ld_loc: Location.t;
-     ld_attributes: attributes;
-    }
-
-and constructor_declaration =
-    {
-     cd_id: Ident.t;
-     cd_name: string loc;
-     cd_args: constructor_arguments;
-     cd_res: core_type option;
-     cd_loc: Location.t;
-     cd_attributes: attributes;
-    }
-
-and constructor_arguments =
-  | Cstr_tuple of core_type list
-  | Cstr_record of label_declaration list
-
-and type_extension =
-  {
-    tyext_path: Path.t;
-    tyext_txt: Longident.t loc;
-    tyext_params: (core_type * variance) list;
-    tyext_constructors: extension_constructor list;
-    tyext_private: private_flag;
-    tyext_attributes: attributes;
-  }
-
-and extension_constructor =
-  {
-    ext_id: Ident.t;
-    ext_name: string loc;
-    ext_type : Types.extension_constructor;
-    ext_kind : extension_constructor_kind;
-    ext_loc : Location.t;
-    ext_attributes: attributes;
-  }
-
-and extension_constructor_kind =
-    Text_decl of constructor_arguments * core_type option
-  | Text_rebind of Path.t * Longident.t loc
-
-and class_type =
-    {
-     cltyp_desc: class_type_desc;
-     cltyp_type: Types.class_type;
-     cltyp_env: Env.t;
-     cltyp_loc: Location.t;
-     cltyp_attributes: attributes;
-    }
-
-and class_type_desc =
-    Tcty_constr of Path.t * Longident.t loc * core_type list
-  | Tcty_signature of class_signature
-  | Tcty_arrow of arg_label * core_type * class_type
-  | Tcty_open of override_flag * Path.t * Longident.t loc * Env.t * class_type
-
-and class_signature = {
-    csig_self : core_type;
-    csig_fields : class_type_field list;
-    csig_type : Types.class_signature;
-  }
-
-and class_type_field = {
-    ctf_desc: class_type_field_desc;
-    ctf_loc: Location.t;
-    ctf_attributes: attributes;
-  }
-
-and class_type_field_desc =
-  | Tctf_inherit of class_type
-  | Tctf_val of (string * mutable_flag * virtual_flag * core_type)
-  | Tctf_method of (string * private_flag * virtual_flag * core_type)
-  | Tctf_constraint of (core_type * core_type)
-  | Tctf_attribute of attribute
-
-
-and class_description =
-  class_type class_infos
-
-and class_type_declaration =
-  class_type class_infos
-
-and 'a class_infos =
-  { ci_virt: virtual_flag;
-    ci_params: (core_type * variance) list;
-    ci_id_name : string loc;
-    ci_id_class: Ident.t;
-    ci_id_class_type : Ident.t;
-    ci_id_object : Ident.t;
-    ci_id_typehash : Ident.t;
-    ci_expr: 'a;
-    ci_decl: Types.class_declaration;
-    ci_type_decl : Types.class_type_declaration;
-    ci_loc: Location.t;
-    ci_attributes: attributes;
-   }
-
-(* Auxiliary functions over the a.s.t. *)
-
-val iter_pattern_desc: (pattern -> unit) -> pattern_desc -> unit
-val map_pattern_desc: (pattern -> pattern) -> pattern_desc -> pattern_desc
-
-val let_bound_idents: value_binding list -> Ident.t list
-val rev_let_bound_idents: value_binding list -> Ident.t list
-
-val let_bound_idents_with_loc:
-    value_binding list -> (Ident.t * string loc) list
-
-(** Alpha conversion of patterns *)
-val alpha_pat: (Ident.t * Ident.t) list -> pattern -> pattern
-
-val mknoloc: 'a -> 'a Asttypes.loc
-val mkloc: 'a -> Location.t -> 'a Asttypes.loc
-
-val pat_bound_idents: pattern -> Ident.t list
diff --git a/src/compiler-libs-406/types.ml b/src/compiler-libs-406/types.ml
deleted file mode 100644
index 9489b121..00000000
--- a/src/compiler-libs-406/types.ml
+++ /dev/null
@@ -1,340 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* Representation of types and declarations *)
-
-open Asttypes
-
-(* Type expressions for the core language *)
-
-type type_expr =
-  { mutable desc: type_desc;
-    mutable level: int;
-    id: int }
-
-and type_desc =
-    Tvar of string option
-  | Tarrow of arg_label * type_expr * type_expr * commutable
-  | Ttuple of type_expr list
-  | Tconstr of Path.t * type_expr list * abbrev_memo ref
-  | Tobject of type_expr * (Path.t * type_expr list) option ref
-  | Tfield of string * field_kind * type_expr * type_expr
-  | Tnil
-  | Tlink of type_expr
-  | Tsubst of type_expr         (* for copying *)
-  | Tvariant of row_desc
-  | Tunivar of string option
-  | Tpoly of type_expr * type_expr list
-  | Tpackage of Path.t * Longident.t list * type_expr list
-
-and row_desc =
-    { row_fields: (label * row_field) list;
-      row_more: type_expr;
-      row_bound: unit;
-      row_closed: bool;
-      row_fixed: bool;
-      row_name: (Path.t * type_expr list) option }
-
-and row_field =
-    Rpresent of type_expr option
-  | Reither of bool * type_expr list * bool * row_field option ref
-        (* 1st true denotes a constant constructor *)
-        (* 2nd true denotes a tag in a pattern matching, and
-           is erased later *)
-  | Rabsent
-
-and abbrev_memo =
-    Mnil
-  | Mcons of private_flag * Path.t * type_expr * type_expr * abbrev_memo
-  | Mlink of abbrev_memo ref
-
-and field_kind =
-    Fvar of field_kind option ref
-  | Fpresent
-  | Fabsent
-
-and commutable =
-    Cok
-  | Cunknown
-  | Clink of commutable ref
-
-module TypeOps = struct
-  type t = type_expr
-  let compare t1 t2 = t1.id - t2.id
-  let hash t = t.id
-  let equal t1 t2 = t1 == t2
-end
-
-(* Maps of methods and instance variables *)
-
-module OrderedString =
-  struct type t = string let compare (x:t) y = compare x y end
-module Meths = Map.Make(OrderedString)
-module Vars = Meths
-
-(* Value descriptions *)
-
-type value_description =
-  { val_type: type_expr;                (* Type of the value *)
-    val_kind: value_kind;
-    val_loc: Location.t;
-    val_attributes: Parsetree.attributes;
- }
-
-and value_kind =
-    Val_reg                             (* Regular value *)
-  | Val_prim of Primitive.description   (* Primitive *)
-
-(* Variance *)
-
-module Variance = struct
-  type t = int
-  type f = May_pos | May_neg | May_weak | Inj | Pos | Neg | Inv
-  let single = function
-    | May_pos -> 1
-    | May_neg -> 2
-    | May_weak -> 4
-    | Inj -> 8
-    | Pos -> 16
-    | Neg -> 32
-    | Inv -> 64
-  let union v1 v2 = v1 lor v2
-  let inter v1 v2 = v1 land v2
-  let subset v1 v2 = (v1 land v2 = v1)
-  let set x b v =
-    if b then v lor single x else  v land (lnot (single x))
-  let mem x = subset (single x)
-  let null = 0
-  let may_inv = 7
-  let full = 127
-  let covariant = single May_pos lor single Pos lor single Inj
-  let swap f1 f2 v =
-    let v' = set f1 (mem f2 v) v in set f2 (mem f1 v) v'
-  let conjugate v = swap May_pos May_neg (swap Pos Neg v)
-  let get_upper v = (mem May_pos v, mem May_neg v)
-  let get_lower v = (mem Pos v, mem Neg v, mem Inv v, mem Inj v)
-end
-
-(* Type definitions *)
-
-type type_declaration =
-  { type_params: type_expr list;
-    type_arity: int;
-    type_kind: type_kind;
-    type_private: private_flag;
-    type_manifest: type_expr option;
-    type_variance: Variance.t list;
-    type_newtype_level: (int * int) option;
-    type_loc: Location.t;
-    type_attributes: Parsetree.attributes;
-    type_immediate: bool;
-    type_unboxed: unboxed_status;
- }
-
-and type_kind =
-    Type_abstract
-  | Type_record of label_declaration list  * record_representation
-  | Type_variant of constructor_declaration list
-  | Type_open
-
-and record_representation =
-    Record_regular                      (* All fields are boxed / tagged *)
-  | Record_float                        (* All fields are floats *)
-  | Record_unboxed of bool    (* Unboxed single-field record, inlined or not *)
-  | Record_inlined of {tag : int; name : string; num_nonconsts : int}               (* Inlined record *)
-  | Record_extension                    (* Inlined record under extension *)
-
-and label_declaration =
-  {
-    ld_id: Ident.t;
-    ld_mutable: mutable_flag;
-    ld_type: type_expr;
-    ld_loc: Location.t;
-    ld_attributes: Parsetree.attributes;
-  }
-
-and constructor_declaration =
-  {
-    cd_id: Ident.t;
-    cd_args: constructor_arguments;
-    cd_res: type_expr option;
-    cd_loc: Location.t;
-    cd_attributes: Parsetree.attributes;
-  }
-
-and constructor_arguments =
-  | Cstr_tuple of type_expr list
-  | Cstr_record of label_declaration list
-
-and unboxed_status =
-  {
-    unboxed: bool;
-    default: bool; (* False if the unboxed field was set from an attribute. *)
-  }
-
-let unboxed_false_default_false = {unboxed = false; default = false}
-let unboxed_false_default_true = {unboxed = false; default = true}
-let unboxed_true_default_false = {unboxed = true; default = false}
-let unboxed_true_default_true = {unboxed = true; default = true}
-
-type extension_constructor =
-    { ext_type_path: Path.t;
-      ext_type_params: type_expr list;
-      ext_args: constructor_arguments;
-      ext_ret_type: type_expr option;
-      ext_private: private_flag;
-      ext_loc: Location.t;
-      ext_attributes: Parsetree.attributes; }
-
-and type_transparence =
-    Type_public      (* unrestricted expansion *)
-  | Type_new         (* "new" type *)
-  | Type_private     (* private type *)
-
-(* Type expressions for the class language *)
-
-module Concr = Set.Make(OrderedString)
-
-type class_type =
-    Cty_constr of Path.t * type_expr list * class_type
-  | Cty_signature of class_signature
-  | Cty_arrow of arg_label * type_expr * class_type
-
-and class_signature =
-  { csig_self: type_expr;
-    csig_vars:
-      (Asttypes.mutable_flag * Asttypes.virtual_flag * type_expr) Vars.t;
-    csig_concr: Concr.t;
-    csig_inher: (Path.t * type_expr list) list }
-
-type class_declaration =
-  { cty_params: type_expr list;
-    mutable cty_type: class_type;
-    cty_path: Path.t;
-    cty_new: type_expr option;
-    cty_variance: Variance.t list;
-    cty_loc: Location.t;
-    cty_attributes: Parsetree.attributes;
- }
-
-type class_type_declaration =
-  { clty_params: type_expr list;
-    clty_type: class_type;
-    clty_path: Path.t;
-    clty_variance: Variance.t list;
-    clty_loc: Location.t;
-    clty_attributes: Parsetree.attributes;
-  }
-
-(* Type expressions for the module language *)
-
-type module_type =
-    Mty_ident of Path.t
-  | Mty_signature of signature
-  | Mty_functor of Ident.t * module_type option * module_type
-  | Mty_alias of alias_presence * Path.t
-
-and alias_presence =
-  | Mta_present
-  | Mta_absent
-
-and signature = signature_item list
-
-and signature_item =
-    Sig_value of Ident.t * value_description
-  | Sig_type of Ident.t * type_declaration * rec_status
-  | Sig_typext of Ident.t * extension_constructor * ext_status
-  | Sig_module of Ident.t * module_declaration * rec_status
-  | Sig_modtype of Ident.t * modtype_declaration
-  | Sig_class of Ident.t * class_declaration * rec_status
-  | Sig_class_type of Ident.t * class_type_declaration * rec_status
-
-and module_declaration =
-  {
-    md_type: module_type;
-    md_attributes: Parsetree.attributes;
-    md_loc: Location.t;
-  }
-
-and modtype_declaration =
-  {
-    mtd_type: module_type option;  (* Note: abstract *)
-    mtd_attributes: Parsetree.attributes;
-    mtd_loc: Location.t;
-  }
-
-and rec_status =
-    Trec_not                   (* first in a nonrecursive group *)
-  | Trec_first                 (* first in a recursive group *)
-  | Trec_next                  (* not first in a recursive/nonrecursive group *)
-
-and ext_status =
-    Text_first                     (* first constructor of an extension *)
-  | Text_next                      (* not first constructor of an extension *)
-  | Text_exception                 (* an exception *)
-
-
-(* Constructor and record label descriptions inserted held in typing
-   environments *)
-
-type constructor_description =
-  { cstr_name: string;                  (* Constructor name *)
-    cstr_res: type_expr;                (* Type of the result *)
-    cstr_existentials: type_expr list;  (* list of existentials *)
-    cstr_args: type_expr list;          (* Type of the arguments *)
-    cstr_arity: int;                    (* Number of arguments *)
-    cstr_tag: constructor_tag;          (* Tag for heap blocks *)
-    cstr_consts: int;                   (* Number of constant constructors *)
-    cstr_nonconsts: int;                (* Number of non-const constructors *)
-    cstr_normal: int;                   (* Number of non generalized constrs *)
-    cstr_generalized: bool;             (* Constrained return type? *)
-    cstr_private: private_flag;         (* Read-only constructor? *)
-    cstr_loc: Location.t;
-    cstr_attributes: Parsetree.attributes;
-    cstr_inlined: type_declaration option;
-   }
-
-and constructor_tag =
-    Cstr_constant of int                (* Constant constructor (an int) *)
-  | Cstr_block of int                   (* Regular constructor (a block) *)
-  | Cstr_unboxed                        (* Constructor of an unboxed type *)
-  | Cstr_extension of Path.t * bool     (* Extension constructor
-                                           true if a constant false if a block*)
-
-let equal_tag t1 t2 = 
-  match (t1, t2) with
-  | Cstr_constant i1, Cstr_constant i2 -> i2 = i1
-  | Cstr_block i1, Cstr_block i2 -> i2 = i1
-  | Cstr_unboxed, Cstr_unboxed -> true
-  | Cstr_extension (path1, b1), Cstr_extension (path2, b2) -> 
-      Path.same path1 path2 && b1 = b2
-  | (Cstr_constant _|Cstr_block _|Cstr_unboxed|Cstr_extension _), _ -> false
-
-let may_equal_constr c1 c2 = match c1.cstr_tag,c2.cstr_tag with
-| Cstr_extension _,Cstr_extension _ -> c1.cstr_arity = c2.cstr_arity
-| tag1,tag2 -> equal_tag tag1 tag2
-
-type label_description =
-  { lbl_name: string;                   (* Short name *)
-    lbl_res: type_expr;                 (* Type of the result *)
-    lbl_arg: type_expr;                 (* Type of the argument *)
-    lbl_mut: mutable_flag;              (* Is this a mutable field? *)
-    lbl_pos: int;                       (* Position in block *)
-    lbl_all: label_description array;   (* All the labels in this type *)
-    lbl_repres: record_representation;  (* Representation for this record *)
-    lbl_private: private_flag;          (* Read-only field? *)
-    lbl_loc: Location.t;
-    lbl_attributes: Parsetree.attributes;
-   }
diff --git a/src/compiler-libs-406/types.mli b/src/compiler-libs-406/types.mli
deleted file mode 100644
index 825b9458..00000000
--- a/src/compiler-libs-406/types.mli
+++ /dev/null
@@ -1,486 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           *)
-(*                                                                        *)
-(*   Copyright 1996 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(** {0 Representation of types and declarations} *)
-
-(** [Types] defines the representation of types and declarations (that is, the
-    content of module signatures).
-
-    CMI files are made of marshalled types.
-*)
-
-(** Asttypes exposes basic definitions shared both by Parsetree and Types. *)
-open Asttypes
-
-(** Type expressions for the core language.
-
-    The [type_desc] variant defines all the possible type expressions one can
-    find in OCaml. [type_expr] wraps this with some annotations.
-
-    The [level] field tracks the level of polymorphism associated to a type,
-    guiding the generalization algorithm.
-    Put shortly, when referring to a type in a given environment, both the type
-    and the environment have a level. If the type has an higher level, then it
-    can be considered fully polymorphic (type variables will be printed as
-    ['a]), otherwise it'll be weakly polymorphic, or non generalized (type
-    variables printed as ['_a]).
-    See [http://okmij.org/ftp/ML/generalization.html] for more information.
-
-    Note about [type_declaration]: one should not make the confusion between
-    [type_expr] and [type_declaration].
-
-    [type_declaration] refers specifically to the [type] construct in OCaml
-    language, where you create and name a new type or type alias.
-
-    [type_expr] is used when you refer to existing types, e.g. when annotating
-    the expected type of a value.
-
-    Also, as the type system of OCaml is generative, a [type_declaration] can
-    have the side-effect of introducing a new type constructor, different from
-    all other known types.
-    Whereas [type_expr] is a pure construct which allows referring to existing
-    types.
-
-    Note on mutability: TBD.
- *)
-type type_expr =
-  { mutable desc: type_desc;
-    mutable level: int;
-    id: int }
-
-and type_desc =
-  | Tvar of string option
-  (** [Tvar (Some "a")] ==> ['a] or ['_a]
-      [Tvar None]       ==> [_] *)
-
-  | Tarrow of arg_label * type_expr * type_expr * commutable
-  (** [Tarrow (Nolabel,      e1, e2, c)] ==> [e1    -> e2]
-      [Tarrow (Labelled "l", e1, e2, c)] ==> [l:e1  -> e2]
-      [Tarrow (Optional "l", e1, e2, c)] ==> [?l:e1 -> e2]
-
-      See [commutable] for the last argument. *)
-
-  | Ttuple of type_expr list
-  (** [Ttuple [t1;...;tn]] ==> [(t1 * ... * tn)] *)
-
-  | Tconstr of Path.t * type_expr list * abbrev_memo ref
-  (** [Tconstr (`A.B.t', [t1;...;tn], _)] ==> [(t1,...,tn) A.B.t]
-      The last parameter keep tracks of known expansions, see [abbrev_memo]. *)
-
-  | Tobject of type_expr * (Path.t * type_expr list) option ref
-  (** [Tobject (`f1:t1;...;fn: tn', `None')] ==> [< f1: t1; ...; fn: tn >]
-      f1, fn are represented as a linked list of types using Tfield and Tnil
-      constructors.
-
-      [Tobject (_, `Some (`A.ct', [t1;...;tn]')] ==> [(t1, ..., tn) A.ct].
-      where A.ct is the type of some class.
-
-      There are also special cases for so-called "class-types", cf. [Typeclass]
-      and [Ctype.set_object_name]:
-
-        [Tobject (Tfield(_,_,...(Tfield(_,_,rv)...),
-                         Some(`A.#ct`, [rv;t1;...;tn])]
-             ==> [(t1, ..., tn) #A.ct]
-        [Tobject (_, Some(`A.#ct`, [Tnil;t1;...;tn])] ==> [(t1, ..., tn) A.ct]
-
-      where [rv] is the hidden row variable.
-  *)
-
-  | Tfield of string * field_kind * type_expr * type_expr
-  (** [Tfield ("foo", Fpresent, t, ts)] ==> [<...; foo : t; ts>] *)
-
-  | Tnil
-  (** [Tnil] ==> [<...; >] *)
-
-  | Tlink of type_expr
-  (** Indirection used by unification engine. *)
-
-  | Tsubst of type_expr         (* for copying *)
-  (** [Tsubst] is used temporarily to store information in low-level
-      functions manipulating representation of types, such as
-      instantiation or copy.
-      This constructor should not appear outside of these cases. *)
-
-  | Tvariant of row_desc
-  (** Representation of polymorphic variants, see [row_desc]. *)
-
-  | Tunivar of string option
-  (** Occurrence of a type variable introduced by a
-      forall quantifier / [Tpoly]. *)
-
-  | Tpoly of type_expr * type_expr list
-  (** [Tpoly (ty,tyl)] ==> ['a1... 'an. ty],
-      where 'a1 ... 'an are names given to types in tyl
-      and occurrences of those types in ty. *)
-
-  | Tpackage of Path.t * Longident.t list * type_expr list
-  (** Type of a first-class module (a.k.a package). *)
-
-(** [  `X | `Y ]       (row_closed = true)
-    [< `X | `Y ]       (row_closed = true)
-    [> `X | `Y ]       (row_closed = false)
-    [< `X | `Y > `X ]  (row_closed = true)
-
-    type t = [> `X ] as 'a      (row_more = Tvar a)
-    type t = private [> `X ]    (row_more = Tconstr (t#row, [], ref Mnil)
-
-    And for:
-
-        let f = function `X -> `X -> | `Y -> `X
-
-    the type of "f" will be a [Tarrow] whose lhs will (basically) be:
-
-        Tvariant { row_fields = [("X", _)];
-                   row_more   =
-                     Tvariant { row_fields = [("Y", _)];
-                                row_more   =
-                                  Tvariant { row_fields = [];
-                                             row_more   = _;
-                                             _ };
-                                _ };
-                   _
-                 }
-
-*)
-and row_desc =
-    { row_fields: (label * row_field) list;
-      row_more: type_expr;
-      row_bound: unit; (* kept for compatibility *)
-      row_closed: bool;
-      row_fixed: bool;
-      row_name: (Path.t * type_expr list) option }
-
-and row_field =
-    Rpresent of type_expr option
-  | Reither of bool * type_expr list * bool * row_field option ref
-        (* 1st true denotes a constant constructor *)
-        (* 2nd true denotes a tag in a pattern matching, and
-           is erased later *)
-  | Rabsent
-
-(** [abbrev_memo] allows one to keep track of different expansions of a type
-    alias. This is done for performance purposes.
-
-    For instance, when defining [type 'a pair = 'a * 'a], when one refers to an
-    ['a pair], it is just a shortcut for the ['a * 'a] type.
-    This expansion will be stored in the [abbrev_memo] of the corresponding
-    [Tconstr] node.
-
-    In practice, [abbrev_memo] behaves like list of expansions with a mutable
-    tail.
-
-    Note on marshalling: [abbrev_memo] must not appear in saved types.
-    [Btype], with [cleanup_abbrev] and [memo], takes care of tracking and
-    removing abbreviations.
-*)
-and abbrev_memo =
-  | Mnil (** No known abbreviation *)
-
-  | Mcons of private_flag * Path.t * type_expr * type_expr * abbrev_memo
-  (** Found one abbreviation.
-      A valid abbreviation should be at least as visible and reachable by the
-      same path.
-      The first expression is the abbreviation and the second the expansion. *)
-
-  | Mlink of abbrev_memo ref
-  (** Abbreviations can be found after this indirection *)
-
-and field_kind =
-    Fvar of field_kind option ref
-  | Fpresent
-  | Fabsent
-
-(** [commutable] is a flag appended to every arrow type.
-
-    When typing an application, if the type of the functional is
-    known, its type is instantiated with [Cok] arrows, otherwise as
-    [Clink (ref Cunknown)].
-
-    When the type is not known, the application will be used to infer
-    the actual type.  This is fragile in presence of labels where
-    there is no principal type.
-
-    Two incompatible applications relying on [Cunknown] arrows will
-    trigger an error.
-
-    let f g =
-      g ~a:() ~b:();
-      g ~b:() ~a:();
-
-    Error: This function is applied to arguments
-    in an order different from other calls.
-    This is only allowed when the real type is known.
-*)
-and commutable =
-    Cok
-  | Cunknown
-  | Clink of commutable ref
-
-module TypeOps : sig
-  type t = type_expr
-  val compare : t -> t -> int
-  val equal : t -> t -> bool
-  val hash : t -> int
-end
-
-(* Maps of methods and instance variables *)
-
-module Meths : Map.S with type key = string
-module Vars  : Map.S with type key = string
-
-(* Value descriptions *)
-
-type value_description =
-  { val_type: type_expr;                (* Type of the value *)
-    val_kind: value_kind;
-    val_loc: Location.t;
-    val_attributes: Parsetree.attributes;
-   }
-
-and value_kind =
-    Val_reg                             (* Regular value *)
-  | Val_prim of Primitive.description   (* Primitive *)
-
-(* Variance *)
-
-module Variance : sig
-  type t
-  type f = May_pos | May_neg | May_weak | Inj | Pos | Neg | Inv
-  val null : t                          (* no occurrence *)
-  val full : t                          (* strictly invariant *)
-  val covariant : t                     (* strictly covariant *)
-  val may_inv : t                       (* maybe invariant *)
-  val union  : t -> t -> t
-  val inter  : t -> t -> t
-  val subset : t -> t -> bool
-  val set : f -> bool -> t -> t
-  val mem : f -> t -> bool
-  val conjugate : t -> t                (* exchange positive and negative *)
-  val get_upper : t -> bool * bool                  (* may_pos, may_neg   *)
-  val get_lower : t -> bool * bool * bool * bool    (* pos, neg, inv, inj *)
-end
-
-(* Type definitions *)
-
-type type_declaration =
-  { type_params: type_expr list;
-    type_arity: int;
-    type_kind: type_kind;
-    type_private: private_flag;
-    type_manifest: type_expr option;
-    type_variance: Variance.t list;
-    (* covariant, contravariant, weakly contravariant, injective *)
-    type_newtype_level: (int * int) option;
-    (* definition level * expansion level *)
-    type_loc: Location.t;
-    type_attributes: Parsetree.attributes;
-    type_immediate: bool; (* true iff type should not be a pointer *)
-    type_unboxed: unboxed_status;
-  }
-
-and type_kind =
-    Type_abstract
-  | Type_record of label_declaration list  * record_representation
-  | Type_variant of constructor_declaration list
-  | Type_open
-
-and record_representation =
-    Record_regular                      (* All fields are boxed / tagged *)
-  | Record_float                        (* All fields are floats *)
-  | Record_unboxed of bool    (* Unboxed single-field record, inlined or not *)
-  | Record_inlined of { tag : int ; name : string; num_nonconsts : int}              (* Inlined record *)
-  | Record_extension                    (* Inlined record under extension *)
-
-and label_declaration =
-  {
-    ld_id: Ident.t;
-    ld_mutable: mutable_flag;
-    ld_type: type_expr;
-    ld_loc: Location.t;
-    ld_attributes: Parsetree.attributes;
-  }
-
-and constructor_declaration =
-  {
-    cd_id: Ident.t;
-    cd_args: constructor_arguments;
-    cd_res: type_expr option;
-    cd_loc: Location.t;
-    cd_attributes: Parsetree.attributes;
-  }
-
-and constructor_arguments =
-  | Cstr_tuple of type_expr list
-  | Cstr_record of label_declaration list
-
-and unboxed_status = private
-  (* This type must be private in order to ensure perfect sharing of the
-     four possible values. Otherwise, ocamlc.byte and ocamlc.opt produce
-     different executables. *)
-  {
-    unboxed: bool;
-    default: bool; (* True for unannotated unboxable types. *)
-  }
-
-val unboxed_false_default_false : unboxed_status
-val unboxed_false_default_true : unboxed_status
-val unboxed_true_default_false : unboxed_status
-val unboxed_true_default_true : unboxed_status
-
-type extension_constructor =
-    {
-      ext_type_path: Path.t;
-      ext_type_params: type_expr list;
-      ext_args: constructor_arguments;
-      ext_ret_type: type_expr option;
-      ext_private: private_flag;
-      ext_loc: Location.t;
-      ext_attributes: Parsetree.attributes;
-    }
-
-and type_transparence =
-    Type_public      (* unrestricted expansion *)
-  | Type_new         (* "new" type *)
-  | Type_private     (* private type *)
-
-(* Type expressions for the class language *)
-
-module Concr : Set.S with type elt = string
-
-type class_type =
-    Cty_constr of Path.t * type_expr list * class_type
-  | Cty_signature of class_signature
-  | Cty_arrow of arg_label * type_expr * class_type
-
-and class_signature =
-  { csig_self: type_expr;
-    csig_vars:
-      (Asttypes.mutable_flag * Asttypes.virtual_flag * type_expr) Vars.t;
-    csig_concr: Concr.t;
-    csig_inher: (Path.t * type_expr list) list }
-
-type class_declaration =
-  { cty_params: type_expr list;
-    mutable cty_type: class_type;
-    cty_path: Path.t;
-    cty_new: type_expr option;
-    cty_variance: Variance.t list;
-    cty_loc: Location.t;
-    cty_attributes: Parsetree.attributes;
-  }
-
-type class_type_declaration =
-  { clty_params: type_expr list;
-    clty_type: class_type;
-    clty_path: Path.t;
-    clty_variance: Variance.t list;
-    clty_loc: Location.t;
-    clty_attributes: Parsetree.attributes;
-  }
-
-(* Type expressions for the module language *)
-
-type module_type =
-    Mty_ident of Path.t
-  | Mty_signature of signature
-  | Mty_functor of Ident.t * module_type option * module_type
-  | Mty_alias of alias_presence * Path.t
-
-and alias_presence =
-  | Mta_present
-  | Mta_absent
-
-and signature = signature_item list
-
-and signature_item =
-    Sig_value of Ident.t * value_description
-  | Sig_type of Ident.t * type_declaration * rec_status
-  | Sig_typext of Ident.t * extension_constructor * ext_status
-  | Sig_module of Ident.t * module_declaration * rec_status
-  | Sig_modtype of Ident.t * modtype_declaration
-  | Sig_class of Ident.t * class_declaration * rec_status
-  | Sig_class_type of Ident.t * class_type_declaration * rec_status
-
-and module_declaration =
-  {
-    md_type: module_type;
-    md_attributes: Parsetree.attributes;
-    md_loc: Location.t;
-  }
-
-and modtype_declaration =
-  {
-    mtd_type: module_type option;  (* None: abstract *)
-    mtd_attributes: Parsetree.attributes;
-    mtd_loc: Location.t;
-  }
-
-and rec_status =
-    Trec_not                   (* first in a nonrecursive group *)
-  | Trec_first                 (* first in a recursive group *)
-  | Trec_next                  (* not first in a recursive/nonrecursive group *)
-
-and ext_status =
-    Text_first                     (* first constructor in an extension *)
-  | Text_next                      (* not first constructor in an extension *)
-  | Text_exception
-
-
-(* Constructor and record label descriptions inserted held in typing
-   environments *)
-
-type constructor_description =
-  { cstr_name: string;                  (* Constructor name *)
-    cstr_res: type_expr;                (* Type of the result *)
-    cstr_existentials: type_expr list;  (* list of existentials *)
-    cstr_args: type_expr list;          (* Type of the arguments *)
-    cstr_arity: int;                    (* Number of arguments *)
-    cstr_tag: constructor_tag;          (* Tag for heap blocks *)
-    cstr_consts: int;                   (* Number of constant constructors *)
-    cstr_nonconsts: int;                (* Number of non-const constructors *)
-    cstr_normal: int;                   (* Number of non generalized constrs *)
-    cstr_generalized: bool;             (* Constrained return type? *)
-    cstr_private: private_flag;         (* Read-only constructor? *)
-    cstr_loc: Location.t;
-    cstr_attributes: Parsetree.attributes;
-    cstr_inlined: type_declaration option;
-   }
-
-and constructor_tag =
-    Cstr_constant of int                (* Constant constructor (an int) *)
-  | Cstr_block of int                   (* Regular constructor (a block) *)
-  | Cstr_unboxed                        (* Constructor of an unboxed type *)
-  | Cstr_extension of Path.t * bool     (* Extension constructor
-                                           true if a constant false if a block*)
-
-(* Constructors are the same *)
-val equal_tag :  constructor_tag -> constructor_tag -> bool
-
-(* Constructors may be the same, given potential rebinding *)
-val may_equal_constr :
-    constructor_description ->  constructor_description -> bool
-
-type label_description =
-  { lbl_name: string;                   (* Short name *)
-    lbl_res: type_expr;                 (* Type of the result *)
-    lbl_arg: type_expr;                 (* Type of the argument *)
-    lbl_mut: mutable_flag;              (* Is this a mutable field? *)
-    lbl_pos: int;                       (* Position in block *)
-    lbl_all: label_description array;   (* All the labels in this type *)
-    lbl_repres: record_representation;  (* Representation for this record *)
-    lbl_private: private_flag;          (* Read-only field? *)
-    lbl_loc: Location.t;
-    lbl_attributes: Parsetree.attributes;
-  }
diff --git a/src/compiler-libs-406/warnings.ml b/src/compiler-libs-406/warnings.ml
deleted file mode 100644
index ffab8606..00000000
--- a/src/compiler-libs-406/warnings.ml
+++ /dev/null
@@ -1,706 +0,0 @@
-(**************************************************************************)
-(*                                                                        *)
-(*                                 OCaml                                  *)
-(*                                                                        *)
-(*             Pierre Weis && Damien Doligez, INRIA Rocquencourt          *)
-(*                                                                        *)
-(*   Copyright 1998 Institut National de Recherche en Informatique et     *)
-(*     en Automatique.                                                    *)
-(*                                                                        *)
-(*   All rights reserved.  This file is distributed under the terms of    *)
-(*   the GNU Lesser General Public License version 2.1, with the          *)
-(*   special exception on linking described in the file LICENSE.          *)
-(*                                                                        *)
-(**************************************************************************)
-
-(* When you change this, you need to update the documentation:
-   - man/ocamlc.m
-   - man/ocamlopt.m
-   - manual/manual/cmds/comp.etex
-   - manual/manual/cmds/native.etex
-*)
-
-type loc = {
-  loc_start: Lexing.position;
-  loc_end: Lexing.position;
-  loc_ghost: bool;
-}
-
-type t =
-  | Comment_start                           (*  1 *)
-  | Comment_not_end                         (*  2 *)
-  | Deprecated of string * loc * loc        (*  3 *)
-  | Fragile_match of string                 (*  4 *)
-  | Partial_application                     (*  5 *)
-  | Labels_omitted of string list           (*  6 *)
-  | Method_override of string list          (*  7 *)
-  | Partial_match of string                 (*  8 *)
-  | Non_closed_record_pattern of string     (*  9 *)
-  | Statement_type                          (* 10 *)
-  | Unused_match                            (* 11 *)
-  | Unused_pat                              (* 12 *)
-  | Instance_variable_override of string list (* 13 *)
-  | Illegal_backslash                       (* 14 *)
-  | Implicit_public_methods of string list  (* 15 *)
-  | Unerasable_optional_argument            (* 16 *)
-  | Undeclared_virtual_method of string     (* 17 *)
-  | Not_principal of string                 (* 18 *)
-  | Without_principality of string          (* 19 *)
-  | Unused_argument                         (* 20 *)
-  | Nonreturning_statement                  (* 21 *)
-  | Preprocessor of string                  (* 22 *)
-  | Useless_record_with                     (* 23 *)
-  | Bad_module_name of string               (* 24 *)
-  | All_clauses_guarded                     (* 8, used to be 25 *)
-  | Unused_var of string                    (* 26 *)
-  | Unused_var_strict of string             (* 27 *)
-  | Wildcard_arg_to_constant_constr         (* 28 *)
-  | Eol_in_string                           (* 29 *)
-  | Duplicate_definitions of string * string * string * string (*30 *)
-  | Unused_value_declaration of string      (* 32 *)
-  | Unused_open of string                   (* 33 *)
-  | Unused_type_declaration of string       (* 34 *)
-  | Unused_for_index of string              (* 35 *)
-  | Unused_ancestor of string               (* 36 *)
-  | Unused_constructor of string * bool * bool  (* 37 *)
-  | Unused_extension of string * bool * bool * bool (* 38 *)
-  | Unused_rec_flag                         (* 39 *)
-  | Name_out_of_scope of string * string list * bool (* 40 *)
-  | Ambiguous_name of string list * string list *  bool    (* 41 *)
-  | Disambiguated_name of string            (* 42 *)
-  | Nonoptional_label of string             (* 43 *)
-  | Open_shadow_identifier of string * string (* 44 *)
-  | Open_shadow_label_constructor of string * string (* 45 *)
-  | Bad_env_variable of string * string     (* 46 *)
-  | Attribute_payload of string * string    (* 47 *)
-  | Eliminated_optional_arguments of string list (* 48 *)
-  | No_cmi_file of string * string option   (* 49 *)
-  | Bad_docstring of bool                   (* 50 *)
-  | Fragile_literal_pattern                 (* 52 *)
-  | Misplaced_attribute of string           (* 53 *)
-  | Duplicated_attribute of string          (* 54 *)
-  | Inlining_impossible of string           (* 55 *)
-  | Unreachable_case                        (* 56 *)
-  | Ambiguous_pattern of string list        (* 57 *)
-  | Assignment_to_non_mutable_value         (* 59 *)
-  | Unused_module of string                 (* 60 *)
-  | Unboxable_type_in_prim_decl of string   (* 61 *)
-  | Constraint_on_gadt                      (* 62 *)
-    
-  | Bs_unused_attribute of string           (* 101 *)
-  | Bs_polymorphic_comparison               (* 102 *)
-  | Bs_ffi_warning of string                (* 103 *)
-  | Bs_derive_warning of string             (* 104 *)
-  | Bs_fragile_external of string           (* 105 *)
-  | Bs_unimplemented_primitive of string    (* 106 *)
-  | Bs_integer_literal_overflow              (* 107 *)
-  | Bs_uninterpreted_delimiters of string   (* 108 *)
-  | Bs_toplevel_expression_unit             (* 109 *)
-;;
-
-(* If you remove a warning, leave a hole in the numbering.  NEVER change
-   the numbers of existing warnings.
-   If you add a new warning, add it at the end with a new number;
-   do NOT reuse one of the holes.
-*)
-
-let number = function
-  | Comment_start -> 1
-  | Comment_not_end -> 2
-  | Deprecated _ -> 3
-  | Fragile_match _ -> 4
-  | Partial_application -> 5
-  | Labels_omitted _ -> 6
-  | Method_override _ -> 7
-  | Partial_match _ -> 8
-  | Non_closed_record_pattern _ -> 9
-  | Statement_type -> 10
-  | Unused_match -> 11
-  | Unused_pat -> 12
-  | Instance_variable_override _ -> 13
-  | Illegal_backslash -> 14
-  | Implicit_public_methods _ -> 15
-  | Unerasable_optional_argument -> 16
-  | Undeclared_virtual_method _ -> 17
-  | Not_principal _ -> 18
-  | Without_principality _ -> 19
-  | Unused_argument -> 20
-  | Nonreturning_statement -> 21
-  | Preprocessor _ -> 22
-  | Useless_record_with -> 23
-  | Bad_module_name _ -> 24
-  | All_clauses_guarded -> 8 (* used to be 25 *)
-  | Unused_var _ -> 26
-  | Unused_var_strict _ -> 27
-  | Wildcard_arg_to_constant_constr -> 28
-  | Eol_in_string -> 29
-  | Duplicate_definitions _ -> 30
-  | Unused_value_declaration _ -> 32
-  | Unused_open _ -> 33
-  | Unused_type_declaration _ -> 34
-  | Unused_for_index _ -> 35
-  | Unused_ancestor _ -> 36
-  | Unused_constructor _ -> 37
-  | Unused_extension _ -> 38
-  | Unused_rec_flag -> 39
-  | Name_out_of_scope _ -> 40
-  | Ambiguous_name _ -> 41
-  | Disambiguated_name _ -> 42
-  | Nonoptional_label _ -> 43
-  | Open_shadow_identifier _ -> 44
-  | Open_shadow_label_constructor _ -> 45
-  | Bad_env_variable _ -> 46
-  | Attribute_payload _ -> 47
-  | Eliminated_optional_arguments _ -> 48
-  | No_cmi_file _ -> 49
-  | Bad_docstring _ -> 50
-  | Fragile_literal_pattern -> 52
-  | Misplaced_attribute _ -> 53
-  | Duplicated_attribute _ -> 54
-  | Inlining_impossible _ -> 55
-  | Unreachable_case -> 56
-  | Ambiguous_pattern _ -> 57
-  | Assignment_to_non_mutable_value -> 59
-  | Unused_module _ -> 60
-  | Unboxable_type_in_prim_decl _ -> 61
-  | Constraint_on_gadt -> 62
-  | Bs_unused_attribute _ -> 101
-  | Bs_polymorphic_comparison -> 102
-  | Bs_ffi_warning _ -> 103
-  | Bs_derive_warning _ -> 104
-  | Bs_fragile_external _ -> 105
-  | Bs_unimplemented_primitive _ -> 106
-  | Bs_integer_literal_overflow -> 107
-  | Bs_uninterpreted_delimiters _ -> 108
-  | Bs_toplevel_expression_unit -> 109
-;;
-
-let last_warning_number = 109
-let letter_all = 
-  let rec loop i = if i = 0 then [] else i :: loop (i - 1) in
-  loop last_warning_number
-
-(* Must be the max number returned by the [number] function. *)
-
-let letter = function
-  | 'a' -> letter_all
-  | 'b' -> []
-  | 'c' -> [1; 2]
-  | 'd' -> [3]
-  | 'e' -> [4]
-  | 'f' -> [5]
-  | 'g' -> []
-  | 'h' -> []
-  | 'i' -> []
-  | 'j' -> []
-  | 'k' -> [32; 33; 34; 35; 36; 37; 38; 39]
-  | 'l' -> [6]
-  | 'm' -> [7]
-  | 'n' -> []
-  | 'o' -> []
-  | 'p' -> [8]
-  | 'q' -> []
-  | 'r' -> [9]
-  | 's' -> [10]
-  | 't' -> []
-  | 'u' -> [11; 12]
-  | 'v' -> [13]
-  | 'w' -> []
-  | 'x' -> [14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 30]
-  | 'y' -> [26]
-  | 'z' -> [27]
-  | _ -> assert false
-;;
-
-type state =
-  {
-    active: bool array;
-    error: bool array;
-  }
-
-let current =
-  ref
-    {
-      active = Array.make (last_warning_number + 1) true;
-      error = Array.make (last_warning_number + 1) false;
-    }
-
-let disabled = ref false
-
-let without_warnings f =
-  Misc.protect_refs [Misc.R(disabled, true)] f
-
-let backup () = !current
-
-let restore x = current := x
-
-let is_active x = not !disabled && (!current).active.(number x);;
-let is_error x = not !disabled && (!current).error.(number x);;
-
-let mk_lazy f =
-  let state = backup () in
-  lazy
-    (
-      let prev = backup () in
-      restore state;
-      try
-        let r = f () in
-        restore prev;
-        r
-      with exn ->
-        restore prev;
-        raise exn
-    )
-
-let parse_opt error active flags s =
-  let set i = flags.(i) <- true in
-  let clear i = flags.(i) <- false in
-  let set_all i = active.(i) <- true; error.(i) <- true in
-  let error () = raise (Arg.Bad "Ill-formed list of warnings") in
-  let rec get_num n i =
-    if i >= String.length s then i, n
-    else match s.[i] with
-    | '0'..'9' -> get_num (10 * n + Char.code s.[i] - Char.code '0') (i + 1)
-    | _ -> i, n
-  in
-  let get_range i =
-    let i, n1 = get_num 0 i in
-    if i + 2 < String.length s && s.[i] = '.' && s.[i + 1] = '.' then
-      let i, n2 = get_num 0 (i + 2) in
-      if n2 < n1 then error ();
-      i, n1, n2
-    else
-      i, n1, n1
-  in
-  let rec loop i =
-    if i >= String.length s then () else
-    match s.[i] with
-    | 'A' .. 'Z' ->
-       List.iter set (letter (Char.lowercase_ascii s.[i]));
-       loop (i+1)
-    | 'a' .. 'z' ->
-       List.iter clear (letter s.[i]);
-       loop (i+1)
-    | '+' -> loop_letter_num set (i+1)
-    | '-' -> loop_letter_num clear (i+1)
-    | '@' -> loop_letter_num set_all (i+1)
-    | _ -> error ()
-  and loop_letter_num myset i =
-    if i >= String.length s then error () else
-    match s.[i] with
-    | '0' .. '9' ->
-        let i, n1, n2 = get_range i in
-        for n = n1 to min n2 last_warning_number do myset n done;
-        loop i
-    | 'A' .. 'Z' ->
-       List.iter myset (letter (Char.lowercase_ascii s.[i]));
-       loop (i+1)
-    | 'a' .. 'z' ->
-       List.iter myset (letter s.[i]);
-       loop (i+1)
-    | _ -> error ()
-  in
-  loop 0
-;;
-
-let parse_options errflag s =
-  let error = Array.copy (!current).error in
-  let active = Array.copy (!current).active in
-  parse_opt error active (if errflag then error else active) s;
-  current := {error; active}
-
-
-
-let reset () = 
-  parse_options false Bsc_warnings.defaults_w;
-  parse_options true Bsc_warnings.defaults_warn_error;;
-
-let () = reset ()
-
-let message = function
-  | Comment_start -> "this is the start of a comment."
-  | Comment_not_end -> "this is not the end of a comment."
-  | Deprecated (s, _, _) ->
-      (* Reduce \r\n to \n:
-           - Prevents any \r characters being printed on Unix when processing
-             Windows sources
-           - Prevents \r\r\n being generated on Windows, which affects the
-             testsuite
-       *)
-       "deprecated: " ^ Misc.normalise_eol s
-  | Fragile_match "" ->
-      "this pattern-matching is fragile."
-  | Fragile_match s ->
-      "this pattern-matching is fragile.\n\
-       It will remain exhaustive when constructors are added to type " ^ s ^ "."
-  | Partial_application ->
-      "this function application is partial,\n\
-       maybe some arguments are missing."
-  | Labels_omitted [] -> assert false
-  | Labels_omitted [l] ->
-     "label " ^ l ^ " was omitted in the application of this function."
-  | Labels_omitted ls ->
-     "labels " ^ String.concat ", " ls ^
-       " were omitted in the application of this function."
-  | Method_override [lab] ->
-      "the method " ^ lab ^ " is overridden."
-  | Method_override (cname :: slist) ->
-      String.concat " "
-        ("the following methods are overridden by the class"
-         :: cname  :: ":\n " :: slist)
-  | Method_override [] -> assert false
-  | Partial_match "" ->
-      "You forgot to handle a possible case here, though we don't have more information on the value."
-  | Partial_match s ->
-      "You forgot to handle a possible case here, for example: \n  " ^ s
-  | Non_closed_record_pattern s ->
-      "the following labels are not bound in this record pattern: " ^ s ^
-      "\nEither bind these labels explicitly or add '; _' to the pattern."
-  | Statement_type ->
-      "this expression should have type unit."
-  | Unused_match -> "this match case is unused."
-  | Unused_pat   -> "this sub-pattern is unused."
-  | Instance_variable_override [lab] ->
-      "the instance variable " ^ lab ^ " is overridden.\n" ^
-      "The behaviour changed in ocaml 3.10 (previous behaviour was hiding.)"
-  | Instance_variable_override (cname :: slist) ->
-      String.concat " "
-        ("the following instance variables are overridden by the class"
-         :: cname  :: ":\n " :: slist) ^
-      "\nThe behaviour changed in ocaml 3.10 (previous behaviour was hiding.)"
-  | Instance_variable_override [] -> assert false
-  | Illegal_backslash -> "illegal backslash escape in string."
-  | Implicit_public_methods l ->
-      "the following private methods were made public implicitly:\n "
-      ^ String.concat " " l ^ "."
-  | Unerasable_optional_argument ->
-      String.concat ""
-        ["This optional parameter in final position will, in practice, not be optional.\n";
-         "  Reorder the parameters so that at least one non-optional one is in final position or, if all parameters are optional, insert a final ().\n\n";
-         "  Explanation: If the final parameter is optional, it'd be unclear whether a function application that omits it should be considered fully applied, or partially applied. Imagine writing `let title = display(\"hello!\")`, only to realize `title` isn't your desired result, but a curried call that takes a final optional argument, e.g. `~showDate`.\n\n";
-         "  Formal rule: an optional argument is considered intentionally omitted when the 1st positional (i.e. neither labeled nor optional) argument defined after it is passed in."
-        ]
-  | Undeclared_virtual_method m -> "the virtual method "^m^" is not declared."
-  | Not_principal s -> s^" is not principal."
-  | Without_principality s -> s^" without principality."
-  | Unused_argument -> "this argument will not be used by the function."
-  | Nonreturning_statement ->
-      "this statement never returns (or has an unsound type.)"
-  | Preprocessor s -> s
-  | Useless_record_with ->
-     begin match !Config.syntax_kind with 
-      | `ml ->
-      "all the fields are explicitly listed in this record:\n\
-       the 'with' clause is useless."
-      | `reason | `rescript ->
-        "All the fields are already explicitly listed in this record. You can remove the `...` spread."
-     end   
-  | Bad_module_name (modname) ->
-    "This file's name is potentially invalid. The build systems conventionally turn a file name into a module name by upper-casing the first letter. " ^ modname ^ " isn't a valid module name.\n" ^
-    "Note: some build systems might e.g. turn kebab-case into CamelCase module, which is why this isn't a hard error."
-  | All_clauses_guarded ->
-      "this pattern-matching is not exhaustive.\n\
-       All clauses in this pattern-matching are guarded."
-  | Unused_var v | Unused_var_strict v -> "unused variable " ^ v ^ "."
-  | Wildcard_arg_to_constant_constr ->
-     "wildcard pattern given as argument to a constant constructor"
-  | Eol_in_string ->
-     "unescaped end-of-line in a string constant (non-portable code)"
-  | Duplicate_definitions (kind, cname, tc1, tc2) ->
-      Printf.sprintf "the %s %s is defined in both types %s and %s."
-        kind cname tc1 tc2
-  | Unused_value_declaration v -> "unused value " ^ v ^ "."
-  | Unused_open s -> "unused open " ^ s ^ "."
-  | Unused_type_declaration s -> "unused type " ^ s ^ "."
-  | Unused_for_index s -> "unused for-loop index " ^ s ^ "."
-  | Unused_ancestor s -> "unused ancestor variable " ^ s ^ "."
-  | Unused_constructor (s, false, false) -> "unused constructor " ^ s ^ "."
-  | Unused_constructor (s, true, _) ->
-      "constructor " ^ s ^
-      " is never used to build values.\n\
-        (However, this constructor appears in patterns.)"
-  | Unused_constructor (s, false, true) ->
-      "constructor " ^ s ^
-      " is never used to build values.\n\
-        Its type is exported as a private type."
-  | Unused_extension (s, is_exception, cu_pattern, cu_privatize) ->
-     let kind =
-       if is_exception then "exception" else "extension constructor" in
-     let name = kind ^ " " ^ s in
-     begin match cu_pattern, cu_privatize with
-       | false, false -> "unused " ^ name
-       | true, _ ->
-          name ^
-          " is never used to build values.\n\
-           (However, this constructor appears in patterns.)"
-       | false, true ->
-          name ^
-          " is never used to build values.\n\
-            It is exported or rebound as a private extension."
-     end
-  | Unused_rec_flag ->
-      "unused rec flag."
-  | Name_out_of_scope (ty, [nm], false) ->
-      nm ^ " was selected from type " ^ ty ^
-      ".\nIt is not visible in the current scope, and will not \n\
-       be selected if the type becomes unknown."
-  | Name_out_of_scope (_, _, false) -> assert false
-  | Name_out_of_scope (ty, slist, true) ->
-      "this record of type "^ ty ^" contains fields that are \n\
-       not visible in the current scope: "
-      ^ String.concat " " slist ^ ".\n\
-       They will not be selected if the type becomes unknown."
-  | Ambiguous_name ([s], tl, false) ->
-      s ^ " belongs to several types: " ^ String.concat " " tl ^
-      "\nThe first one was selected. Please disambiguate if this is wrong."
-  | Ambiguous_name (_, _, false) -> assert false
-  | Ambiguous_name (_slist, tl, true) ->
-      "these field labels belong to several types: " ^
-      String.concat " " tl ^
-      "\nThe first one was selected. Please disambiguate if this is wrong."
-  | Disambiguated_name s ->
-      "this use of " ^ s ^ " relies on type-directed disambiguation,\n\
-       it will not compile with OCaml 4.00 or earlier."
-  | Nonoptional_label s ->
-      "the label " ^ s ^ " is not optional."
-  | Open_shadow_identifier (kind, s) ->
-      Printf.sprintf
-        "this open statement shadows the %s identifier %s (which is later used)"
-        kind s
-  | Open_shadow_label_constructor (kind, s) ->
-      Printf.sprintf
-        "this open statement shadows the %s %s (which is later used)"
-        kind s
-  | Bad_env_variable (var, s) ->
-      Printf.sprintf "illegal environment variable %s : %s" var s
-  | Attribute_payload (a, s) ->
-      Printf.sprintf "illegal payload for attribute '%s'.\n%s" a s
-  | Eliminated_optional_arguments sl ->
-      Printf.sprintf "implicit elimination of optional argument%s %s"
-        (if List.length sl = 1 then "" else "s")
-        (String.concat ", " sl)
-  | No_cmi_file(name, None) ->
-      "no cmi file was found in path for module " ^ name
-  | No_cmi_file(name, Some msg) ->
-      Printf.sprintf
-        "no valid cmi file was found in path for module %s. %s"
-        name msg
-  | Bad_docstring unattached ->
-      if unattached then "unattached documentation comment (ignored)"
-      else "ambiguous documentation comment"
-  | Fragile_literal_pattern ->
-      Printf.sprintf
-        "Code should not depend on the actual values of\n\
-         this constructor's arguments. They are only for information\n\
-         and may change in future versions. (See manual section 8.5)"
-  | Unreachable_case ->
-      "this match case is unreachable.\n\
-       Consider replacing it with a refutation case '<pat> -> .'"
-  | Misplaced_attribute attr_name ->
-      Printf.sprintf "the %S attribute cannot appear in this context" attr_name
-  | Duplicated_attribute attr_name ->
-      Printf.sprintf "the %S attribute is used more than once on this \
-          expression"
-        attr_name
-  | Inlining_impossible reason ->
-      Printf.sprintf "Cannot inline: %s" reason
-  | Ambiguous_pattern vars ->
-      let msg =
-        let vars = List.sort String.compare vars in
-        match vars with
-        | [] -> assert false
-        | [x] -> "variable " ^ x
-        | _::_ ->
-            "variables " ^ String.concat "," vars in
-      Printf.sprintf
-        "Ambiguous or-pattern variables under guard;\n\
-         %s may match different arguments. (See manual section 8.5)"
-        msg
-  | Assignment_to_non_mutable_value ->
-      "A potential assignment to a non-mutable value was detected \n\
-        in this source file.  Such assignments may generate incorrect code \n\
-        when using Flambda."
-  | Unused_module s -> "unused module " ^ s ^ "."
-  | Unboxable_type_in_prim_decl t ->
-      Printf.sprintf
-        "This primitive declaration uses type %s, which is unannotated and\n\
-         unboxable. The representation of such types may change in future\n\
-         versions. You should annotate the declaration of %s with [@@boxed]\n\
-         or [@@unboxed]." t t
-  | Constraint_on_gadt ->
-      "Type constraints do not apply to GADT cases of variant types."
-
-  | Bs_unused_attribute s ->
-      "Unused attribute: " ^ s ^ "\n\
-      This means such annotation is not annotated properly. \n\
-      for example, some annotations is only meaningful in externals \n"
-  | Bs_polymorphic_comparison ->
-      "Polymorphic comparison introduced (maybe unsafe)"
-  | Bs_ffi_warning s ->
-      "FFI warning: " ^ s
-  | Bs_derive_warning s ->
-      "bs.deriving warning: " ^ s 
-  | Bs_fragile_external s ->     
-    s ^ " : using an empty string as a shorthand to infer the external's name from the value's name is dangerous when refactoring, and therefore deprecated"
-  | Bs_unimplemented_primitive s -> 
-      "Unimplemented primitive used:" ^ s
-  | Bs_integer_literal_overflow -> 
-      "Integer literal exceeds the range of representable integers of type int"
-  | Bs_uninterpreted_delimiters s -> 
-      "Uninterpreted delimiters " ^ s  
-  | Bs_toplevel_expression_unit -> 
-      "Toplevel expression is expected to have unit type."    
-;;
-
-let sub_locs = function
-  | Deprecated (_, def, use) ->
-      [
-        def, "Definition";
-        use, "Expected signature";
-      ]
-  | _ -> []
-
-let has_warnings = ref false ;;  
-let nerrors = ref 0;;
-
-type reporting_information =
-  { number : int
-  ; message : string
-  ; is_error : bool
-  ; sub_locs : (loc * string) list;
-  }
-
-let report w =
-  match w with 
-  | Name_out_of_scope _ (* 40 *)
-  | Disambiguated_name _ (* 42 *)
-  | Unboxable_type_in_prim_decl _ (* 61 *) -> `Inactive
-  (* TODO: we could simplify the code even more *)
-  | _ -> 
-  match is_active w with
-  | false -> `Inactive
-  | true ->
-     has_warnings := true; 
-     if is_error w then incr nerrors;
-     `Active { number = number w; message = message w; is_error = is_error w;
-               sub_locs = sub_locs w;
-             }
-;;
-
-
-exception Errors;;
-
-let reset_fatal () =
-  nerrors := 0
-
-let check_fatal () =
-  if !nerrors > 0 then begin
-    nerrors := 0;
-    raise Errors;
-  end;
-;;
-
-let descriptions =
-  [
-    1, "Suspicious-looking start-of-comment mark.";
-    2, "Suspicious-looking end-of-comment mark.";
-    3, "Deprecated feature.";
-    4, "Fragile pattern matching: matching that will remain complete even\n\
-   \    if additional constructors are added to one of the variant types\n\
-   \    matched.";
-    5, "Partially applied function: expression whose result has function\n\
-   \    type and is ignored.";
-    6, "Label omitted in function application.";
-    7, "Method overridden.";
-    8, "Partial match: missing cases in pattern-matching.";
-    9, "Missing fields in a record pattern.";
-   10, "Expression on the left-hand side of a sequence that doesn't have \
-      type\n\
-   \    \"unit\" (and that is not a function, see warning number 5).";
-   11, "Redundant case in a pattern matching (unused match case).";
-   12, "Redundant sub-pattern in a pattern-matching.";
-   13, "Instance variable overridden.";
-   14, "Illegal backslash escape in a string constant.";
-   15, "Private method made public implicitly.";
-   16, "Unerasable optional argument.";
-   17, "Undeclared virtual method.";
-   18, "Non-principal type.";
-   19, "Type without principality.";
-   20, "Unused function argument.";
-   21, "Non-returning statement.";
-   22, "Preprocessor warning.";
-   23, "Useless record \"with\" clause.";
-   24, "Bad module name: the source file name is not a valid OCaml module \
-        name.";
-   25, "Deprecated: now part of warning 8.";
-   26, "Suspicious unused variable: unused variable that is bound\n\
-   \    with \"let\" or \"as\", and doesn't start with an underscore (\"_\")\n\
-   \    character.";
-   27, "Innocuous unused variable: unused variable that is not bound with\n\
-   \    \"let\" nor \"as\", and doesn't start with an underscore (\"_\")\n\
-   \    character.";
-   28, "Wildcard pattern given as argument to a constant constructor.";
-   29, "Unescaped end-of-line in a string constant (non-portable code).";
-   30, "Two labels or constructors of the same name are defined in two\n\
-   \    mutually recursive types.";
-   31, "A module is linked twice in the same executable.";
-   32, "Unused value declaration.";
-   33, "Unused open statement.";
-   34, "Unused type declaration.";
-   35, "Unused for-loop index.";
-   36, "Unused ancestor variable.";
-   37, "Unused constructor.";
-   38, "Unused extension constructor.";
-   39, "Unused rec flag.";
-   40, "Constructor or label name used out of scope.";
-   41, "Ambiguous constructor or label name.";
-   42, "Disambiguated constructor or label name (compatibility warning).";
-   43, "Nonoptional label applied as optional.";
-   44, "Open statement shadows an already defined identifier.";
-   45, "Open statement shadows an already defined label or constructor.";
-   46, "Error in environment variable.";
-   47, "Illegal attribute payload.";
-   48, "Implicit elimination of optional arguments.";
-   49, "Absent cmi file when looking up module alias.";
-   50, "Unexpected documentation comment.";
-   51, "Warning on non-tail calls if @tailcall present.";
-   52, "Fragile constant pattern.";
-   53, "Attribute cannot appear in this context";
-   54, "Attribute used more than once on an expression";
-   55, "Inlining impossible";
-   56, "Unreachable case in a pattern-matching (based on type information).";
-   57, "Ambiguous or-pattern variables under guard";
-   58, "Missing cmx file";
-   59, "Assignment to non-mutable value";
-   60, "Unused module declaration";
-   61, "Unboxable type in primitive declaration";
-   62, "Type constraint on GADT type declaration";
-    
-   101, "Unused bs attributes";
-   102, "Polymorphic comparison introduced (maybe unsafe)";
-   103, "Fragile FFI definitions" ;
-   104, "bs.deriving warning with customized message ";
-   105, "External name is inferred from val name is unsafe from refactoring when changing value name";
-   106, "Unimplemented primitive used:";
-   107, "Integer literal exceeds the range of representable integers of type int";
-   108, "Uninterpreted delimiters (for unicode)" ;
-   109, "Toplevel expression has unit type"   
-  ]
-;;
-
-let help_warnings () =
-  List.iter (fun (i, s) -> Printf.printf "%3i %s\n" i s) descriptions;
-  print_endline "  A all warnings";
-  for i = Char.code 'b' to Char.code 'z' do
-    let c = Char.chr i in
-    match letter c with
-    | [] -> ()
-    | [n] ->
-        Printf.printf "  %c Alias for warning %i.\n" (Char.uppercase_ascii c) n
-    | l ->
-        Printf.printf "  %c warnings %s.\n"
-          (Char.uppercase_ascii c)
-          (String.concat ", " (List.map string_of_int l))
-  done;
-  exit 0
-;;
\ No newline at end of file
diff --git a/src/dune b/src/dune
index fa6401be..ac7344ff 100644
--- a/src/dune
+++ b/src/dune
@@ -11,4 +11,4 @@
  (name Reanalyze)
  (flags "-w" "+6+26+27+32+33+39")
  ; Depends on:
- (libraries unix str compiler-libs.common compilerlibs406))
+ (libraries unix str compiler-libs.common))
diff --git a/src/dune.406 b/src/dune.406
deleted file mode 100644
index 0556c4fe..00000000
--- a/src/dune.406
+++ /dev/null
@@ -1,14 +0,0 @@
-(copy_files# ext/*.{ml,mli})
-(copy_files# vendor/*.{ml,mli})
-
-(executable
- (public_name reanalyze.exe)
- (modes byte exe)
- (preprocess
-  (action
-   (run %{bin:cppo} -V OCAML:4.06.1 %{input-file})))
- ; The main module that will become the binary.
- (name Reanalyze)
- (flags "-w" "+6+26+27+32+33+39")
- ; Depends on:
- (libraries unix str compiler-libs.common compilerlibs406))