http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-24 08:49:15 UTC --- And with -O3 -fno-tree-copy-prop this started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166244 Perhaps that patch should have adjusted the assert too?