https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99447
--- Comment #16 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I was trying to reproduce some kind of ICE for a while, trying to also rebuild with ggc forced on every ggc_collect call, but no luck. I wonder if you happen to know specific gcc regression that was failing and if it was patched or not...