https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90978
--- Comment #3 from Jan Hubicka <hubicka at ucw dot cz> --- > Guess this is https://gcc.gnu.org/ml/gcc-patches/2010-06/msg00410.html but the > gcc_unreachable () calls weren't in the patch posted to gcc-patches. It indeed seems like debugging session leftover. Given we had the check there for 9 years, perhaps it is enough evidence that path does not execute? Honza