[libcxx-commits] [libcxx] [libcxx] Implement C++20 std::chrono::is_clock, std::chrono::is_clock_v (PR #160607)

[Nikolas Klauser via libcxx-commits]

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@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: std-at-least-c++20
+
+#include <chrono>
+#include <ratio>
+
+#if !__has_warning("-Winvalid-specializations")
+// expected-no-diagnostics
+#else
+
+namespace std::chrono {
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philnik777 wrote:

Let's avoid opening `namespace std`.

https://github.com/llvm/llvm-project/pull/160607