https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67820
--- Comment #2 from David Binderman <dcb314 at hotmail dot com> --- >I have almost always seen people use -Wall -W Doubtful. Looking at a bunch of recent Fedora package builds $ fgrep -l Wextra fedora/pass78/201512*/* | wc -l 35 $ fgrep -l Wall fedora/pass78/201512*/* | wc -l 589 On an earlier and bigger set of builds: $ fgrep -l Wextra fedora/pass77/2015*/* | wc -l 523 $ fgrep -l Wall fedora/pass77/2015*/* | wc -l 5983 $ So about 6% in the first case and 9% in the second case. Even allowing for the -W to -Wextra change, neither of these numbers look to me like "almost always". It looks to me like lots of folks use -Wall, but few folks use -Wextra.
