Re: [kbuild-all] Re: [ammarfaizi2-block:rostedt/linux-trace/ftrace/core 30/30] include/linux/cpumask.h:95:42: warning: function 'trace_event_get_offsets_foo_bar' might be a candidate for 'gnu_printf' format attribute

[Chen, Rong A]

On 7/16/2022 11:04 AM, Steven Rostedt wrote:
> On Sat, 16 Jul 2022 09:09:15 +0800
> kernel test robot <lkp@xxxxxxxxx> wrote:
>
> > All warnings (new ones prefixed by >>):
> >
> >     In file included from include/trace/define_trace.h:102,
> >                      from samples/trace_events/trace-events-sample.h:608,
> >                      from samples/trace_events/trace-events-sample.c:12:
> >     samples/trace_events/./trace-events-sample.h: In function 'trace_event_get_offsets_foo_bar':
> > > > include/linux/cpumask.h:95:42: warning: function 'trace_event_get_offsets_foo_bar' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
> >        95 | #define cpu_possible_mask ((const struct cpumask *)&__cpu_possible_mask)
> >           |                                          ^~~~~~~
>
> Please quiet the gnu_printf warning. I actually missed a real build issue
> from the kernel test robot in the last patch set because it was the needle
> in the gnu_printf haystack :-p
>
> That is, after having 10 of these warnings, I missed the one that actually
> mattered.
>
> -- Steve

Hi Steve,

Sorry for the noise, we didn't ignore gnu_printf warning in this file,
we will ignore all gnu_printf warnings.

Best Regards,
Rong Chen