[libcxx-commits] [libcxx] [libc++] Speed up classic locale (PR #72112)

[Louis Dionne via libcxx-commits]

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@@ -15,6 +15,7 @@
 #include <__memory/shared_ptr.h> // __shared_count
 #include <__mutex/once_flag.h>
 #include <__type_traits/make_unsigned.h>
+#include <__utility/no_destroy.h>
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ldionne wrote:

It's needed for the friend declaration.

https://github.com/llvm/llvm-project/pull/72112