Re: Inconsistent printf format warnings for macro in system headers

[Olivier Blin <olivier dot blin at softathome dot com>]

Le 21/10/2015 19:34, Martin Sebor a écrit :
> On 10/16/2015 08:40 AM, Olivier Blin wrote:
> > Hello,
> >
> > In gcc versions starting from 4.8, it seems that printf format warnings
> > in macros are inconsistent, depending on whether the header defining the
> > macro is included as a system header or not, and on the build mode (C or
> > C++).
> >
> > With gcc < 4.8 (tried gcc 4.6.3 and 4.7.2), there are printf format
> > warnings for both C and C++ languages, when the macro is in a system
> > header or not.
> >
> > With gcc >= 4.8 (tried 4.8.2 and 5.2.1 snapshot), there are no printf
> > format warnings when the build mode is C++ *and* when the macro is in a
> > system header.
> > If the build mode is C or if the macro is in a non-system header, the
> > printf format warnings are emitted.
>
> I'm inclined to say it's a bug. I recommend opening it in Bugzilla.
Hello Martin,

Thanks for your answser and details.
I have opened a bug in bugzilla:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68052

It would probably be useful to add your comments in there.

Cheers

--
Olivier Blin - SoftAtHome