[libcxx-commits] [libcxxabi] [libc++] Bump the C++ Standard used to compile the dylib to C++23 (PR #66824)

[via libcxx-commits]

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@@ -34,7 +35,7 @@ class _LIBCPP_HIDDEN __sso_allocator<void, _Np>
 template <class _Tp, size_t _Np>
 class _LIBCPP_HIDDEN __sso_allocator
 {
-    typename aligned_storage<sizeof(_Tp) * _Np>::type buf_;
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EricWF wrote:

This can change the object size & alignment, no?

`aligned_storage` may add padding bytes at the end, where this would not. And the alignment wasn't specified when using `aligned_storage`, so it may have been larger than what the type needed.

Are we certain this isn't ABI breaking?

https://github.com/llvm/llvm-project/pull/66824