On Thu, 25 Oct 2012, Jakub Jelinek wrote: > On Thu, Oct 25, 2012 at 12:58:26PM +0200, Richard Biener wrote: > > So the bug here is really in find_many_sub_basic_blocks then > > and your patch would certainly avoid triggering its bug > > (or its wrong expectations). I'll give it testing. > > I'd say we should insert the __builtin_unreachable already far earlier than > that, either when inlining the noreturn function and figuring out > it might return (perhaps conditionally on something that never happens), > or if LTO does something similar with it even without inlining.
That would be fixup_cfg which is supposed to deal with this kind of "fallout", like in my original patch (just using __builtin_unreachable () instead of an infinite loop edge) Honza? Richard.
