[libcxx-commits] [libcxx] [libc++] Allow the use of extensions in the implementation (PR #79532)

[Louis Dionne via libcxx-commits]

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@@ -881,14 +898,25 @@ typedef __char32_t char32_t;
 
 // Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect.
 // clang-format off
-#  define _LIBCPP_BEGIN_NAMESPACE_STD namespace _LIBCPP_TYPE_VISIBILITY_DEFAULT std {                                  \
+#  define _LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_DIAGNOSTIC_PUSH                                                          \
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ldionne wrote:

As discussed, this is optional.

https://github.com/llvm/llvm-project/pull/79532