Adrian Vogelsgesang 2d34cb74b5 [libc++] Implement thread::id comparators as free functions
So far, the `thread::id` comparators were implemented as hidden friends.
This was non-conforming and lead to incorrectly rejected C++ code, as
can be seen in the linked Github issue.

Fixes https://github.com/llvm/llvm-project/issues/56187

Differential Revision: https://reviews.llvm.org/D131430
2022-08-10 11:39:50 -07:00
..