[lld] [llvm] [clang-tools-extra] [libcxx] [libc] [flang] [compiler-rt] [clang] [libc++][memory] P2652R2: Disallow Specialization of `allocator_traits` (PR #79978)

[Nikolas Klauser via llvm-commits]

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@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_ALLOCATION_RESULT_H
+#define _LIBCPP___MEMORY_ALLOCATION_RESULT_H
+
+#include <__config>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER >= 23
+
+template <class _Pointer, class _SizeType = size_t>
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philnik777 wrote:

Why did you move this to it's own header?

https://github.com/llvm/llvm-project/pull/79978