[Bug c/67820] Move obscure warning about null pointers into prime time

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67820

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to David Binderman from comment #2)
> >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
> $ 
> 

Did you grep for -W ?  Because I bet there are a lot more people who use that
instead of -Wextra.  Seriously -W has been wildly in use for years (over 20
years now) and people would use that over -Wextra because the code is older
than -Wextra was added to GCC.