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

[Louis Dionne via libcxx-commits]

================
@@ -6,6 +6,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-threads
----------------
ldionne wrote:

^ I think you actually need both `UNSUPPORTED: no-threads` and `XFAIL: availability-...`

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