On Fri, 2018-03-16 at 00:20 +0800, Coly Li wrote:
> On 15/03/2018 11:08 PM, Bart Van Assche wrote:
> > This patch does not change any functionality.
> >
> > Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxx>
>
> Hi Bart,
>
> This patch looks good to me. A question is, does GCC later than 4.3
> supports such annotation like '__maybe_unused' ?
Hello Coly,
You may want to have a look at the following commit:
commit 0d7ebbbc6eaa5539f78ab20ed6ff1725a4e332ef
Author: David Rientjes <rientjes@xxxxxxxxxx>
Date: Wed May 9 02:35:27 2007 -0700
compiler: introduce __used and __maybe_unused
__used is defined to be __attribute__((unused)) for all pre-3.3 gcc
compilers to suppress warnings for unused functions because perhaps they
are referenced only in inline assembly. It is defined to be
__attribute__((used)) for gcc 3.3 and later so that the code is still
emitted for such functions.
Thanks,
Bart.
