[libcxx-commits] [libcxx] [libc++] Deprecate the C++20 synchronization library before C++20 (PR #86410)

[Mark de Wever via libcxx-commits]

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@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: no-threads
-// XFAIL: c++03
+// UNSUPPORTED: c++03, c++11, c++14, c++17
----------------
mordante wrote:

Normally we use `// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS` to keep testing deprecated features. Should we do the same here?

https://github.com/llvm/llvm-project/pull/86410