[Bug c/67479] Support for -Wformat-pedantic

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67479

--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Mon, 7 Sep 2015, manu at gcc dot gnu.org wrote:

> Perhaps this should be called then -Wformat-undefined and not depend on
> -Wpedantic at all?

But if you're writing code for the GNU system, there's nothing wrong with 
such formats; they aren't undefined.  It's specifically a warning for code 
outside the standard, not for code there's anything wrong with if you're 
not trying to restrict yourself to standard library features.