https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96159
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ABI, wrong-code |documentation
Ever confirmed|0 |1
Last reconfirmed| |2021-11-26
Status|UNCONFIRMED |NEW
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It assumes that because the purpose of those built-ins is to implement C
_Atomic and C++ std::atomic. If you use those APIs the alignment is taken care
of n by the implementation. If you use the low-level, non-portable APIs
directly then you are responsible for getting it right.
This is just a documentation bug.
