[libcxx-commits] [libcxx] [libc++] Enable C++ stdatomic.h for all C++ versions (PR #95498)

[Louis Dionne via libcxx-commits]

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@@ -121,7 +121,7 @@ using std::atomic_signal_fence                         // see below
 #  pragma GCC system_header
 #endif
 
-#if defined(__cplusplus) && _LIBCPP_STD_VER >= 23
+#if defined(__cplusplus)
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ldionne wrote:

Since this header from libc++ is supposed to only be included in C++ mode, we should always take this branch and the `#else` should be unnecessary. Do you agree? The `#else` was previously useful because it handled the pre-C++23 behavior, but it wouldn't be useful anymore with this patch.

https://github.com/llvm/llvm-project/pull/95498