[libcxx-commits] [libcxx] [libc++] Use [[clang::no_specializations]] to diagnose invalid user specializations (PR #118167)

[Louis Dionne via libcxx-commits]

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@@ -1172,6 +1172,12 @@ typedef __char32_t char32_t;
 
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ldionne wrote:

We could also check `allocator_traits`, which isn't allowed specializations.

https://github.com/llvm/llvm-project/pull/118167