http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56434
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-25
18:36:49 UTC ---
MALLOC_ABI_ALIGNMENT isn't properly set on most targets though.
E.g. with glibc, the alignment of malloced memory is 2 * sizeof (void *) (right
now, might be bigger in the future), while MALLOC_ABI_ALIGNMENT is still 8
bits.
It is just fine to assume malloced memory must be at aligned enough for any of
the standard C types, so if this is say on x86_64 where long double is 16-byte
aligned, then there is really no reason to bother with aligning to 16-byte
boundaries. If you have malloc implementation that doesn't align at least that
much, just fix it, or don't use malloc attribute for that.
