[PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]

[Florian Weimer]

On 06/13/2016 04:03 PM, Mike Frysinger wrote:
> On 13 Jun 2016 13:11, Florian Weimer wrote:
>> +static void
>> +write_message (const char *message)
>> +{
>> +  ssize_t unused __attribute__ ((unused));
>> +  for (int i = 0; i < pass; ++i)
>> +    unused = write (STDOUT_FILENO, " ", 1);
>> +  unused = write (STDOUT_FILENO, message, strlen (message));
>
> are you just trying to ignore the wur markings on write ?  you can use
> this style instead:
> 	if (write (...))
> 	  {
> 	    /* ignored */
> 	  }
>
> which i'm sure can be macroed.

I believe the __attribute_ ((unused)) approach is the recommended way to 
suppress this warning.  Everything else is just gaming the GCC optimizers.

Thanks,
Florian