[libcxx-commits] [libcxx] [libc++] fix back slash as root dir breaks lexically_relative, lexically_proximate and hash_value on Windows (PR #99780)

[nicole mazzuca via libcxx-commits]

strega-nil wrote:

If someone else approves, I'm happy to merge this.

https://github.com/llvm/llvm-project/pull/99780