[libcxx-commits] [libcxx] [libc++] Fix sub-overflow in std::gcd implementation (PR #117984)

[Louis Dionne via libcxx-commits]

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

LGTM assuming benchmarks look good (please post the results in the PR before merging). Thanks a lot for fixing this!

https://github.com/llvm/llvm-project/pull/117984