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

[Steven Rostedt]

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