https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105588
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
_Alignof(expression) works like __alignof__(expression) which works like
__alignof__(__typeof(expression)), while _Alignof(type_name) is mandated by the
standard to work differently.
The difference is that in the ia32 psABI, double is normally 8 byte aligned,
except when inside of struct/union where the alignment is lowered to 4 byte
alignment.
Changing any of this would be a significant ABI change.
