https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67792
--- Comment #2 from Gary Funck <gary at intrepid dot com> --- (In reply to Andreas Schwab from comment #1) > Nobody is testing make clean, patches welcome. It's much easier to just > remove the build directory before starting over. OK. I don't plan on looking into it. It didn't fail on a recent trunk version, so probably it is fixed there.