linux-kernel - [PATCH 04/14] perf kmem: Fix compiler warning about may be accessing uninitialized variable

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Date:	Fri, 29 May 2015 13:30:14 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH 04/14] perf kmem: Fix compiler warning about may be accessing uninitialized variable

From: Arnaldo Carvalho de Melo <acme@...hat.com>

The last argument to strtok_r doesn't need to be initialized, its just a
placeholder to make this routine reentrant, but gcc doesn't know about
that and complains, breaking the build, fix it by setting it to NULL.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: http://lkml.kernel.org/n/tip-8e8rgbg3aom9uarsyqjrsctg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-kmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 254614b10c4a..950f296dfcf7 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -644,7 +644,7 @@ static char *compact_gfp_flags(char *gfp_flags)
 {
 	char *orig_flags = strdup(gfp_flags);
 	char *new_flags = NULL;
-	char *str, *pos;
+	char *str, *pos = NULL;
 	size_t len = 0;
 
 	if (orig_flags == NULL)
-- 
2.1.0

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