https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82694
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> --- Note though that there were _many_ foldings not properly guarded by POINTER_TYPE_OVERFLOW_UNDEFINED. I'd rather fold that into TYPE_OVERFLOW_UNDEFINED / TYPE_OVERFLOW_WRAPS anyway (thus also allow those on pointer types).
