[Bug c/110322] Be more helpful when a varargs function is called in a wrong way

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110322

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note -Wformat-nonliteral is not enabled by default either (though IIRC Debian
and Ubuntu turn it on by default).