[Bug c/117059] Enhancement: Make -Wzero-as-null-pointer-constant available in C

[alx at kernel dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117059

--- Comment #10 from Alejandro Colomar <alx at kernel dot org> ---
Do we warn about enum/_Bool (PR112556) with this?  My computer with which I
work with GCC is having a hardware failure and I can't use it until 3 weeks
from now when a new piece arrives.