D52529.diff
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	diff --git a/contrib/llvm-project/libcxx/include/__type_traits/is_trivially_relocatable.h b/contrib/llvm-project/libcxx/include/__type_traits/is_trivially_relocatable.h
	--- a/contrib/llvm-project/libcxx/include/__type_traits/is_trivially_relocatable.h
	+++ b/contrib/llvm-project/libcxx/include/__type_traits/is_trivially_relocatable.h
	@@ -11,7 +11,6 @@

	#include <__config>
	#include <__type_traits/enable_if.h>
	-#include <__type_traits/integral_constant.h>
	#include <__type_traits/is_same.h>
	#include <__type_traits/is_trivially_copyable.h>

	@@ -23,8 +22,11 @@

	// A type is trivially relocatable if a move construct + destroy of the original object is equivalent to
	// `memcpy(dst, src, sizeof(T))`.
	-
	-#if __has_builtin(__is_trivially_relocatable)
	+//
	+// Note that we don't use the __is_trivially_relocatable Clang builtin right now because it does not
	+// implement the semantics of any current or future trivial relocation proposal and it can lead to
	+// incorrect optimizations on some platforms (Windows) and supported compilers (AppleClang).
	+#if __has_builtin(__is_trivially_relocatable) && 0
	template <class _Tp, class = void>
	struct __libcpp_is_trivially_relocatable : integral_constant<bool, __is_trivially_relocatable(_Tp)> {};
	#else