[Bug libstdc++/114865] [13/14/15 Regression] std::atomic::compare_exchange_strong seems to hang under GCC 13 for C++11

[pdimov at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114865

--- Comment #19 from Peter Dimov <pdimov at gmail dot com> ---
This should work.

I still don't understand why JF so insisted on all these padding shenanigans.