https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64756
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 34643 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34643&action=edit gcc5-pr64756.patch I'd say we just should never record volatile MEMs into the hash table, this patch attempts to ensure that.