https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86837
--- Comment #2 from Pascal <tmp147 at neuf dot fr> --- (In reply to Harald Anlauf from comment #1) > If I add "-fno-frontend-optimize", the test case runs properly. > > There have been other cases where front-end optimization fell over > nested loops. You were lucky to find another one that's not yet covered. This option will help, I can live with the other optimizations only. Hope you can fix the problem I was so lucky to find ;>)