[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

[Mark de Wever via llvm-branch-commits]

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@@ -84,7 +84,7 @@ _LIBCPP_PUSH_MACROS
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Allocator /* = allocator<_Tp> */>
-class _LIBCPP_TEMPLATE_VIS vector {
+class _LIBCPP_TEMPLATE_VIS vector _LIBCPP_MAYBE_FORCE_NONSTANDARD_LAYOUT {
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mordante wrote:

`std::vector` is used in the libc++ dylib across the ABI boundary. So this means you can only use `pointer_field_protection` when the dylib is build with `pointer_field_protection`.

https://github.com/llvm/llvm-project/pull/133538