https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77788
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- It seems that few of us do profiledbootstrap during development so warnings tend to creep in and go unnoticed. Would it make sense to detect the missing --disable-werror during configuration and print a big warning that such builds are unsupported and will likely fail? (It might help avoid wasting time.)