[libcxx-commits] [libcxx] [libc++] Floating Point Atomic (PR #67799)

[Louis Dionne via libcxx-commits]

================
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
----------------
ldionne wrote:

Mark the following tests as `XFAIL` on tsan:

```
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/fetch_add.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/fetch_sub.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/load.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/store.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp
```

You can use

```
// Clang's support for atomic operations on long double is broken. See <LINK TO BUG REPORT>
// XFAIL: tsan
```

And these ones for msan:

```
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp
libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp
```

With

```
// similar comment
// XFAIL: msan
```


https://github.com/llvm/llvm-project/pull/67799