[libcxx-commits] [libcxx] Fix __split_buffer_pointer_layout compatibility with swift's C++ interop (PR #170957)

[Nikolas Klauser via libcxx-commits]

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@@ -30,6 +30,9 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_nothrow_assignable.h>
 #include <__type_traits/is_nothrow_constructible.h>
+#if _LIBCPP_STD_VER >= 20
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philnik777 wrote:

We usually don't include headers conditionally.

https://github.com/llvm/llvm-project/pull/170957