https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120496
--- Comment #4 from Sam James <sjames at gcc dot gnu.org> --- (In reply to Dennis Clarke from comment #2) > May be trivial to fix given that the error only ever happens in the final > stage of the bootstrap. No, there's a lot more. If it were just this, I would give you a patch now.