[PATCH] perf target: Ignore return value of strerror_r() explicitly

[Namhyung Kim]

From: Namhyung Kim <namhyung.kim@xxxxxxx>

Since glibc 2.16 added the warn_unused_result (wur) attribute
to the function, we should check the return value or ignore it
explicitly.

Reported-by: Markus Trippelsdorf <markus@xxxxxxxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
 tools/perf/util/target.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c
index 1064d5b148ad..18080ca9ceec 100644
--- a/tools/perf/util/target.c
+++ b/tools/perf/util/target.c
@@ -111,7 +111,8 @@ int perf_target__strerror(struct perf_target *target, int errnum,
 	const char *msg;
 
 	if (errnum >= 0) {
-		strerror_r(errnum, buf, buflen);
+		/* make glibc (>= 2.16) happy */
+		(void)strerror_r(errnum, buf, buflen);
 		return 0;
 	}
 
-- 
1.7.10.2

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