https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65709
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> *(U64*)dstPtr = *(U64*)srcPtr;
>
> makes GCC assume that dstPtr and srcPtr are suitably aligned for U64, if they
> are not then you invoke undefined behavior. As x86 doesn't trap on
> unaligned accesses unless they are from vectorized code this shows up only
> when the
> vectorizer exploits that alignment info.
>
> Thus I'd say this bug is invalid.
Agreed, closing.
