[libcxx-commits] [libcxx] [libcxxabi] [libc++] Remove dependence on <ciso646> (PR #73271)

[Louis Dionne via libcxx-commits]

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

This version of the patch looks good to me. Thanks for the cleanup.

Perhaps give 1-2 days for @mordante to see this in case he still has feedback, but I think this should be fairly uncontroversial.

https://github.com/llvm/llvm-project/pull/73271