generator: Mark QNX c_void types as opaque to get raw pointers

Long ago in #339 I added "opaque" types to ensure that pointers to it
stay as pointers in FFI rather than get converted to `&mut` borrows
which don't carry the load of an arbitrary pointer value to "something
unknown" (= opaque).  When the QNX types were added in #429 and #760
some time later, they weren't added to this list and turned into borrows
making them impossible to be handled safely in user code.

Likewise in #433 I changed the "platform type" for `SECURITY_ATTRIBUTES`
(which is a POD) to `c_void` but the borrow in the builder remains.
With a `c_void` it's more useful to map these as a raw `*const` pointer
too.

Author: MarijnS95

Changelog.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] - ReleaseDate
 
+### Changed
+
+- Treat QNX "void" type aliases and `SECURITY_ATTRIBUTES` as "opaque" to make them raw pointers instead of borrows in public structures. (#950)
+
 ### Added
 
 - Added `push()` method to all root structs to insert a single extension-struct in the pointer chain. (#909)

ash/src/vk/definitions.rs

@@ -10273,12 +10273,12 @@ impl<'a> ScreenSurfaceCreateInfoQNX<'a> {
         self
     }
     #[inline]
-    pub fn context(mut self, context: &'a mut _screen_context) -> Self {
+    pub fn context(mut self, context: *mut _screen_context) -> Self {
         self.context = context;
         self
     }
     #[inline]
-    pub fn window(mut self, window: &'a mut _screen_window) -> Self {
+    pub fn window(mut self, window: *mut _screen_window) -> Self {
         self.window = window;
         self
     }
@@ -11356,7 +11356,7 @@ unsafe impl<'a> TaggedStructure for ExportMemoryWin32HandleInfoNV<'a> {
 unsafe impl Extends<MemoryAllocateInfo<'_>> for ExportMemoryWin32HandleInfoNV<'_> {}
 impl<'a> ExportMemoryWin32HandleInfoNV<'a> {
     #[inline]
-    pub fn attributes(mut self, attributes: &'a SECURITY_ATTRIBUTES) -> Self {
+    pub fn attributes(mut self, attributes: *const SECURITY_ATTRIBUTES) -> Self {
         self.p_attributes = attributes;
         self
     }
@@ -13892,7 +13892,7 @@ unsafe impl<'a> TaggedStructure for ExportMemoryWin32HandleInfoKHR<'a> {
 unsafe impl Extends<MemoryAllocateInfo<'_>> for ExportMemoryWin32HandleInfoKHR<'_> {}
 impl<'a> ExportMemoryWin32HandleInfoKHR<'a> {
     #[inline]
-    pub fn attributes(mut self, attributes: &'a SECURITY_ATTRIBUTES) -> Self {
+    pub fn attributes(mut self, attributes: *const SECURITY_ATTRIBUTES) -> Self {
         self.p_attributes = attributes;
         self
     }
@@ -14555,7 +14555,7 @@ unsafe impl<'a> TaggedStructure for ExportSemaphoreWin32HandleInfoKHR<'a> {
 unsafe impl Extends<SemaphoreCreateInfo<'_>> for ExportSemaphoreWin32HandleInfoKHR<'_> {}
 impl<'a> ExportSemaphoreWin32HandleInfoKHR<'a> {
     #[inline]
-    pub fn attributes(mut self, attributes: &'a SECURITY_ATTRIBUTES) -> Self {
+    pub fn attributes(mut self, attributes: *const SECURITY_ATTRIBUTES) -> Self {
         self.p_attributes = attributes;
         self
     }
@@ -15074,7 +15074,7 @@ unsafe impl<'a> TaggedStructure for ExportFenceWin32HandleInfoKHR<'a> {
 unsafe impl Extends<FenceCreateInfo<'_>> for ExportFenceWin32HandleInfoKHR<'_> {}
 impl<'a> ExportFenceWin32HandleInfoKHR<'a> {
     #[inline]
-    pub fn attributes(mut self, attributes: &'a SECURITY_ATTRIBUTES) -> Self {
+    pub fn attributes(mut self, attributes: *const SECURITY_ATTRIBUTES) -> Self {
         self.p_attributes = attributes;
         self
     }
@@ -59553,7 +59553,7 @@ unsafe impl<'a> TaggedStructure for ImportScreenBufferInfoQNX<'a> {
 unsafe impl Extends<MemoryAllocateInfo<'_>> for ImportScreenBufferInfoQNX<'_> {}
 impl<'a> ImportScreenBufferInfoQNX<'a> {
     #[inline]
-    pub fn buffer(mut self, buffer: &'a mut _screen_buffer) -> Self {
+    pub fn buffer(mut self, buffer: *mut _screen_buffer) -> Self {
         self.buffer = buffer;
         self
     }

generator/src/lib.rs

@@ -300,6 +300,10 @@ fn is_opaque_type(ty: &str) -> bool {
             | "CAMetalLayer"
             | "IDirectFB"
             | "IDirectFBSurface"
+            | "_screen_buffer"
+            | "_screen_context"
+            | "_screen_window"
+            | "SECURITY_ATTRIBUTES"
     )
 }