[libcxx-commits] [libcxx] [libcxx] Avoid hash key in __hash_table::find() if it is empty. (PR #126837)

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xbcnn wrote:

There are 3 failing checks pop out but I am not sure the reasons and how to resolve. 
@philnik777 @frederick-vs-ja   Could you help me take a look at this.  Any guidance or suggestions would be greatly appreciated!

https://github.com/llvm/llvm-project/pull/126837