[Bug libstdc++/120527] Native platform wait on darwin

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120527

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oh nice, there's an official, documented API for it now:
https://developer.apple.com/documentation/os/os_sync_wait_on_address