https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94623
--- Comment #10 from David Binderman <dcb314 at hotmail dot com> --- (In reply to David Binderman from comment #6) > I'll reduce the checking flags down to "no" and see what happens. It works fine. So it looks like one of the checking flags (df,extra,fold,rtl,yes) breaks it. It will take a few hours, but I'll try to find out which one.