[libcxx-commits] [libcxx] [libc++] Implement C++20 atomic_ref (PR #76647)

[Damien L-G via libcxx-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
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// static constexpr size_t required_alignment;
+
+#include <atomic>
+
+template <typename T>
+void checkRequiredAlignment() {
+  static_assert(std::atomic_ref<T>::required_alignment >= alignof(T));
+}
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dalg24 wrote:

Done.

https://github.com/llvm/llvm-project/pull/76647