Fix INDEXED BY in LINKAGE SECTION

Fix a bug where INDEXED BY in LINKAGE SECTION would cause the variable
not to be added to the local include file, causing a compile error of
the C code.

cobc/ChangeLog

@@ -1,4 +1,10 @@
 
+2025-01-06  Fabrice Le Fessant <[email protected]>
+
+	* parser.y (rule occurs_index): set index_type to CB_INT_INDEX
+	  also for INDEXED BY appaering in LINKAGE SECTION, otherwise
+	  the variable is not added to the local include file
+
 2025-01-03  Fabrice Le Fessant <[email protected]>
 
 	* typeck.c (build_evaluate, cb_check_needs_break): fix a bug where

cobc/parser.y

@@ -8569,7 +8569,8 @@ occurs_index:
 	const cb_tree init_val = cb_default_byte == CB_DEFAULT_BYTE_INIT
 	                       ? cb_int1 : NULL;
 	$$ = cb_build_index ($1, init_val, 1U, current_field);
-	if (storage == CB_STORAGE_LOCAL) {
+	if (storage == CB_STORAGE_LOCAL ||
+		storage == CB_STORAGE_LINKAGE) {
 		CB_FIELD_PTR ($$)->index_type = CB_INT_INDEX;
 	} else {
 		CB_FIELD_PTR ($$)->index_type = CB_STATIC_INT_INDEX;