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

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

LGTM with green CI! You'll need to remove `libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uses_allocator_construction_args.pass.cpp` from the `ignore_format.txt` file since it's properly formatted now.

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