https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90690
sandra at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sandra at gcc dot gnu.org --- Comment #2 from sandra at gcc dot gnu.org --- I think this has been fixed? In a recent-ish trunk build, I see gcc -Q --help-warning prints -Werror-implicit-function-declaration -Werror=implicit-function-declaration whereas in GCC 9 it just printed -Werror-implicit-function-declaration