[Bug libstdc++/122172] [16 Regression] 1571 regressions due to std::make_unsigned<_Atomic_word> since r16-3810

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122172

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'll look into the broken atomicity_dir stuff.