https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92002
--- Comment #9 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> --- > Did this somehow get fixed (the bootstrap?) or require some nonstandard > configuration? Not at all. I still cannot make any sense of the warning, but hacked around it by disabling -Werror for the affected files in t-sparc to get any work done: diff --git a/gcc/config/sparc/t-sparc b/gcc/config/sparc/t-sparc --- a/gcc/config/sparc/t-sparc +++ b/gcc/config/sparc/t-sparc @@ -27,3 +27,7 @@ sparc-c.o: $(srcdir)/config/sparc/sparc- sparc-d.o: $(srcdir)/config/sparc/sparc-d.c $(COMPILE) $< $(POSTCOMPILE) + +# Hack around PR bootstrap/92002. +tree-ssanames.o-warn += -Wno-error +wide-int.o-warn += -Wno-error