https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68095
--- Comment #8 from David <gccbugzilla at limegreensocks dot com> --- I doubt this patch is ever going anywhere. Now that v6 has shipped, producing an error for both using and clobbering flags would "break backward compatibility." On the plus side it would probably have caught your ice. You may want to file the ice as a separate bug. Is there a bug for the !cc clobber thing? I'd like to see that.
