https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80647
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- pintsrc = (int*)src; pintdest = (int*)dst; src and dst are not 4 byte aligned here? This is a bug in your code due to that. -fsantizer=undefined will catch these at runtime IIRC.