linux-kernel - [PATCH] libperf test: Silence printf flag warning

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Date:   Tue,  4 May 2021 12:43:29 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Rob Herring <robh@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ian Rogers <irogers@...gle.com>
Subject: [PATCH] libperf test: Silence printf flag warning

__u64 maybe an unsigned long, it may also differ from the format
expected by PRIu64. Add a cast to silence the warning:

tools/lib/perf/tests/test-evsel.c:176:33: error: format specifies type 'unsigned long long' but the argument has type 'unsigned long' [-Werror,-Wformat]
                __T_VERBOSE("count = %llu\n", end - start);
                                     ~~~~     ^~~~~~~~~~~
                                     %lu

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/lib/perf/tests/test-evsel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/perf/tests/test-evsel.c b/tools/lib/perf/tests/test-evsel.c
index 288b5feaefe2..558097bbbfd0 100644
--- a/tools/lib/perf/tests/test-evsel.c
+++ b/tools/lib/perf/tests/test-evsel.c
@@ -173,7 +173,7 @@ static int test_stat_user_read(int event)
 
 		__T("invalid counter data", (end - start) > last);
 		last = end - start;
-		__T_VERBOSE("count = %llu\n", end - start);
+		__T_VERBOSE("count = %llu\n", (unsigned long long)(end - start));
 	}
 
 	perf_evsel__munmap(evsel);
-- 
2.31.1.607.g51e8a6a459-goog