https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67816
--- Comment #4 from Jeffrey A. Law <law at redhat dot com> --- I can't get it to fail either. I've also tried running cc1 under valgrind to see if anything shows up. Sadly nothing relevant. Richi, if this is still failing, can you get me a little context? A gimple_debug_cfg (0x60) at the point of failure and anything in the DOM debugging dump (-fdump-whatever-details-blocks-vops)