[PATCH] perf/core: Fix a warning in util/trace-event-parse.c

[chenggang qin]

From: <chenggang.qcg@xxxxxxxxxx>

While I compile the perf in Red Hat Enterprise Linux Server release 5.4 (Tikanga),
I got a warning:

CC util/trace-event-parse.o
cc1: warnings being treated as errors
util/trace-event-parse.c: In function 'parse_proc_kallsyms':
util/trace-event-parse.c:232: warning: 'fmt' may be used uninitialized in this function
make: *** [util/trace-event-parse.o] Error 1

The version of gcc is:  4.1.2

The reason is that the local variable 'fmt' is not initialized before we use it.
It is fixed in this patch.

Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Yanmin Zhang <yanmin.zhang@xxxxxxxxx>
Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Chenggang Qin <chenggang.qcg@xxxxxxxxxx>

---
 tools/perf/util/trace-event-parse.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 3aabcd6..630e331 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -229,7 +229,7 @@ void parse_proc_kallsyms(struct pevent *pevent,
 	char *next = NULL;
 	char *addr_str;
 	char *mod;
-	char *fmt;
+	char *fmt = NULL;
 
 	line = strtok_r(file, "\n", &next);
 	while (line) {
-- 
1.5.5.6

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