[libcxx-commits] [libcxx] [libcxx] Put `std::monostate` in `<utility>` (PR #128373)

[Nikolas Klauser via libcxx-commits]

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@@ -279,6 +279,10 @@ template <class T>
 #    include <__utility/unreachable.h>
 #  endif
 
+#  if _LIBCPP_STD_VER >= 26
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philnik777 wrote:

I don't have a strong preference. Making it available from 17 as an extension seems fine. It's a really small header with few dependencies.

https://github.com/llvm/llvm-project/pull/128373