linux-kernel - [PATCH] selftests/vDSO: fix -Wformat warning in vdso_test

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Message-Id: <20201217163235.22788-1-tklauser@distanz.ch>
Date:   Thu, 17 Dec 2020 17:32:35 +0100
From:   Tobias Klauser <tklauser@...tanz.ch>
To:     Shuah Khan <shuah@...nel.org>
Cc:     Vincenzo Frascino <vincenzo.frascino@....com>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/vDSO: fix -Wformat warning in vdso_test_correctness

Fix the following -Wformat warnings in vdso_test_correctness.c:

vdso_test_correctness.c: In function ‘test_one_clock_gettime64’:
vdso_test_correctness.c:352:21: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘long long int’ [-Wformat=]
  352 |  printf("\t%llu.%09ld %llu.%09ld %llu.%09ld\n",
      |                 ~~~~^
      |                     |
      |                     long int
      |                 %09lld
  353 |         (unsigned long long)start.tv_sec, start.tv_nsec,
      |                                           ~~~~~~~~~~~~~
      |                                                |
      |                                                long long int
vdso_test_correctness.c:352:32: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 5 has type ‘long long int’ [-Wformat=]
  352 |  printf("\t%llu.%09ld %llu.%09ld %llu.%09ld\n",
      |                            ~~~~^
      |                                |
      |                                long int
      |                            %09lld
  353 |         (unsigned long long)start.tv_sec, start.tv_nsec,
  354 |         (unsigned long long)vdso.tv_sec, vdso.tv_nsec,
      |                                          ~~~~~~~~~~~~
      |                                              |
      |                                              long long int
vdso_test_correctness.c:352:43: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 7 has type ‘long long int’ [-Wformat=]

The tv_sec member of __kernel_timespec is long long, both in
uapi/linux/time_types.h and locally in vdso_test_correctness.c.

Signed-off-by: Tobias Klauser <tklauser@...tanz.ch>
---
 tools/testing/selftests/vDSO/vdso_test_correctness.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vDSO/vdso_test_correctness.c b/tools/testing/selftests/vDSO/vdso_test_correctness.c
index 5029ef9b228c..c4aea794725a 100644
--- a/tools/testing/selftests/vDSO/vdso_test_correctness.c
+++ b/tools/testing/selftests/vDSO/vdso_test_correctness.c
@@ -349,7 +349,7 @@ static void test_one_clock_gettime64(int clock, const char *name)
 		return;
 	}
 
-	printf("\t%llu.%09ld %llu.%09ld %llu.%09ld\n",
+	printf("\t%llu.%09lld %llu.%09lld %llu.%09lld\n",
 	       (unsigned long long)start.tv_sec, start.tv_nsec,
 	       (unsigned long long)vdso.tv_sec, vdso.tv_nsec,
 	       (unsigned long long)end.tv_sec, end.tv_nsec);
-- 
2.29.0