https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212
--- Comment #194 from Kazumoto Kojima <kkojima at gcc dot gnu.org> --- Created attachment 58995 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58995&action=edit simply a trial patch, not a real fix With this explicit emit_clobber, all the segfaults I reported are gone. I'm a bit confused.