https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72833
--- Comment #6 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- Created attachment 39078 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39078&action=edit untested patch Completely untested patch. Based on the gcc-4.9 solaris patch: just s/solaris/darwin/ and s/__NORETURN/__dead2/ Could you try a boot-strap with it? Thanks.