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Re: [C] Fix PR57258: unused variable warning is emitted for volatile variables


On Thu, Nov 7, 2013 at 11:53 AM, Mingjie Xing <mingjie.xing@gmail.com> wrote:
> 2013/11/6 Richard Biener <richard.guenther@gmail.com>:
>> You miss a testcase.
>>
>> Also why should the warning be omitted for unused automatic
>> volatile variables?  They cannot be used in any way.
>>
>> Richard.
>
> Thanks.  I've updated the patch with a test case.
>
> c/ChangeLog
>
>         PR 57258

Should be:
           PR c/57258

Thanks,
bin
>         * c-decl.c (pop_scope): Don't emit unused variable warnings for
>         accessed volatile variables.
>
> testsuite/ChangeLog
>
>         * gcc.dg/Wunused-var-4.c: New test.
>
> Mingjie



-- 
Best Regards.


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