[tip:perf/core] perf tests record: No need to test an array against NULL

From: tip-bot for Arnaldo Carvalho de Melo
Date: Tue Feb 14 2017 - 01:43:11 EST


Commit-ID: 9ef6839bcce7ca944c1ace4a7247cf13ca92a28f
Gitweb: http://git.kernel.org/tip/9ef6839bcce7ca944c1ace4a7247cf13ca92a28f
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 13 Feb 2017 17:04:05 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 13 Feb 2017 17:22:34 -0300

perf tests record: No need to test an array against NULL

It will always evaluate to 'true', as clang warns:

CC /tmp/build/perf/tests/perf-record.o
CC /tmp/build/perf/tests/evsel-roundtrip-name.o
tests/perf-record.c:69:24: error: comparison of array 'argv' equal to a null pointer is always false [-Werror,-Wtautological-pointer-compare]
if (evlist == NULL || argv == NULL) {
^~~~ ~~~~
1 error generated.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-o4977g6p9b3peak9ct6ef48q@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/tests/perf-record.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 8f2e1de..541da7a 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -66,7 +66,7 @@ int test__PERF_RECORD(int subtest __maybe_unused)
if (evlist == NULL) /* Fallback for kernels lacking PERF_COUNT_SW_DUMMY */
evlist = perf_evlist__new_default();

- if (evlist == NULL || argv == NULL) {
+ if (evlist == NULL) {
pr_debug("Not enough memory to create evlist\n");
goto out;
}