[libcxx-commits] [libcxx] [Libcxx][NFC] fixing missing forward declarations of uses_allocator_construction_args (PR #67044)

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phyBrackets wrote:

Hi @philnik777 , thanks for the comment! I am kinda unsure about the current way of updating the tests is the best, have a look. 

https://github.com/llvm/llvm-project/pull/67044