[Bug libstdc++/126230] std::atomic when T has padding bytes violates stable ABI

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126230

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Drea Pinski from comment #2)
> I think GCC <=12 was broken in that it would produce wrong code for valid
> cases. So the ABI was not exactly stable.

I'm not aware of any such wrong code bug.