[libcxx-commits] [libcxx] [libc++][NFC] Move basic ASan annotation functions into a utility header (PR #87220)

[Louis Dionne via libcxx-commits]

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

Thanks, this is a nice little refactoring. I'd like a comment explaining `__asan_annotate_container_with_allocator` before you merge this, though!

https://github.com/llvm/llvm-project/pull/87220