[libcxx-commits] [libcxx] [libc++] Make `std::lock_guard` available with `_LIBCPP_HAS_NO_THREADS` (PR #98717)

[Louis Dionne via libcxx-commits]

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

LGTM if CI is green.

https://github.com/llvm/llvm-project/pull/98717