https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67820
--- Comment #4 from David Binderman <dcb314 at hotmail dot com> --- >Did you grep for -W ? $ fgrep -l -e "-W " fedora/pass78/2015122*/* | wc -l 50 $ fgrep -l -e "-W " fedora/pass77/201512*/* | wc -l 590 $ So -W gets about as much use as -Wextra Both together are 14% in the first case and 19% in the second case. Still look like low numbers to me. It seems that most Fedora developers don't use -W or -Wextra. Hence my bug report.