linux-kernel - Re: [PATCH] perf test: Fix build failure

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Message-ID: <20120925115536.GA25264@gmail.com>
Date:	Tue, 25 Sep 2012 13:55:36 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH] perf test: Fix build failure


* Arnaldo Carvalho de Melo <acme@...stprotocols.net> wrote:

> Em Tue, Sep 25, 2012 at 11:20:28AM +0900, Namhyung Kim escreveu:
> > From: Namhyung Kim <namhyung.kim@....com>
> > 
> > The commit 6a6cd11d4e57 ("perf test: Add test for the sched tracepoint
> > format fields") added following build error:
> > 
> >   CC builtin-test.o
> > builtin-test.c: In function ‘perf_evsel__test_field’:
> > builtin-test.c:1216:6: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable]
> > builtin-test.c: In function ‘perf_evsel__tp_sched_test’:
> > builtin-test.c:1242:6: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable]
> > cc1: all warnings being treated as errors
> > make: *** [builtin-test.o] Error 1
> 
> 
> Interesting :-\
> 
> [acme@...dy linux]$ gcc --version
> gcc (GCC) 4.4.6 20120305 (Red Hat 4.4.6-4)

This caught it here:

  gcc version 4.7.0 20120507 (Red Hat 4.7.0-5) (GCC)

Thanks,

	Ingo
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