[Bug libstdc++/88101] Implement P0528R3, C++20 cmpxchg and padding bits

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88101

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The compiler side is done, but the libstdc++-v3 side is not on the trunk yet.