[libcxx-commits] [libcxx] [libc++] LWG 3821 uses_allocator_construction_args should have overload for pair-like (PR #66939)

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huixie90 wrote:

> LWG 3525

We actually did implement LWG 3525. 
When this  header was first created , the standard already had the wording of LWG 3525 thus it was implemented straightaway.  (That being said, we need a separate patch with a unittest and mark issue as completed )

https://github.com/llvm/llvm-project/pull/66939