[tip:perf/core] perf tests: Check for mkstemp return value in dso-data test

[tip-bot for Jiri Olsa <jolsa@redhat.com>]

Commit-ID:  f95e0818cbd026a8f2277895c65fcc9cc5b28cf6
Gitweb:     http://git.kernel.org/tip/f95e0818cbd026a8f2277895c65fcc9cc5b28cf6
Author:     Jiri Olsa <jolsa@redhat.com>
AuthorDate: Sat, 10 Nov 2012 01:46:52 +0100
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 14 Nov 2012 16:50:30 -0300

perf tests: Check for mkstemp return value in dso-data test

Adding check for mkstemp return error value in dso-data test.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1352508412-16914-13-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/tests/dso-data.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c
index b5198f5..5eaffa2 100644
--- a/tools/perf/tests/dso-data.c
+++ b/tools/perf/tests/dso-data.c
@@ -26,6 +26,10 @@ static char *test_file(int size)
 	unsigned char *buf;
 
 	fd = mkstemp(templ);
+	if (fd < 0) {
+		perror("mkstemp failed");
+		return NULL;
+	}
 
 	buf = malloc(size);
 	if (!buf) {