[tip:perf/core] perf events: Fix false positive build warning with older GCC's
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From: tip-bot for Ingo Molnar on 18 Mar 2010 13:40 Commit-ID: 55632770d7298835645489828af87f854c47749c Gitweb: http://git.kernel.org/tip/55632770d7298835645489828af87f854c47749c Author: Ingo Molnar <mingo(a)elte.hu> AuthorDate: Thu, 18 Mar 2010 16:51:16 +0100 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Thu, 18 Mar 2010 17:03:24 +0100 perf events: Fix false positive build warning with older GCC's gcc 4.2.1 produces: util/probe-event.c: In function 'add_perf_probe_events': util/probe-event.c:883: warning: 'tev' may be used uninitialized in this function make: *** [util/probe-event.o] Error 1 Newer GCCs get this right. To work it around, initialize the variable to NULL so that older GCCs see it as initialized too. Cc: Masami Hiramatsu <mhiramat(a)redhat.com> Cc: Frederic Weisbecker <fweisbec(a)gmail.com> Cc: Arnaldo Carvalho de Melo <acme(a)redhat.com> Cc: Paul Mackerras <paulus(a)samba.org> Cc: Mike Galbraith <efault(a)gmx.de> Cc: Peter Zijlstra <a.p.zijlstra(a)chello.nl> LKML-Reference: <20100316220612.32050.33806.stgit(a)localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo(a)elte.hu> --- tools/perf/util/probe-event.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index f333269..c6603f3 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -880,7 +880,7 @@ static void __add_kprobe_trace_events(struct perf_probe_event *pev, int ntevs, bool allow_suffix) { int i, fd; - struct kprobe_trace_event *tev; + struct kprobe_trace_event *tev = NULL; char buf[64]; const char *event, *group; struct strlist *namelist; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |