https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81749
--- Comment #3 from Max Bruckner <max at maxbruckner dot de> --- Created attachment 41946 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41946&action=edit Suppression file as a workaround. Add to UBSAN_OPTIONS=supressions=...