https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79936
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >Interestingly, the ICE seems to go away when I try to save the preprocessed >source to attach to this bug: That usually might point to a GC issue. still attach the preprocessed source and we can try to see what is going on.