diff mbox series

[v4,1/8] selftests: Add printf attribute to kselftest prints

Message ID 9c14b1fcc057e31fdb2e2c9438cc4e04bf218d34.1696846568.git.maciej.wieczor-retman@intel.com
State New
Headers
Series Add printf attribute to kselftest functions |

Commit Message

Maciej Wieczor-Retman Oct. 9, 2023, 10:30 a.m. UTC 
  Kselftest header defines multiple variadic functions that use printf
along with other logic.

There is no format checking for the variadic functions that use
printing inside kselftest.h. Because of this the compiler won't
be able to catch instances of mismatched printf formats and debugging
tests might be more difficult.

Add the common __printf attribute macro to kselftest.h.

Add __printf attribute to every function using formatted printing with
variadic arguments.

Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
---
Changelog v4:
- Fix typo in patch subject. (Reinette)
- Add Reinette's reviewed-by tag.

 tools/testing/selftests/kselftest.h | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index af9f1202d423..5696199c16f9 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -78,6 +78,8 @@ 
 #define KSFT_XPASS 3
 #define KSFT_SKIP  4
 
+#define __printf(a, b)   __attribute__((format(printf, a, b)))
+
 /* counters */
 struct ksft_count {
 	unsigned int ksft_pass;
@@ -144,7 +146,7 @@  static inline void ksft_print_cnts(void)
 		ksft_cnt.ksft_xskip, ksft_cnt.ksft_error);
 }
 
-static inline void ksft_print_msg(const char *msg, ...)
+static inline __printf(1, 2) void ksft_print_msg(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -169,7 +171,7 @@  static inline void ksft_perror(const char *msg)
 #endif
 }
 
-static inline void ksft_test_result_pass(const char *msg, ...)
+static inline __printf(1, 2) void ksft_test_result_pass(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -183,7 +185,7 @@  static inline void ksft_test_result_pass(const char *msg, ...)
 	va_end(args);
 }
 
-static inline void ksft_test_result_fail(const char *msg, ...)
+static inline __printf(1, 2) void ksft_test_result_fail(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -209,7 +211,7 @@  static inline void ksft_test_result_fail(const char *msg, ...)
 		ksft_test_result_fail(fmt, ##__VA_ARGS__);\
 	} while (0)
 
-static inline void ksft_test_result_xfail(const char *msg, ...)
+static inline __printf(1, 2) void ksft_test_result_xfail(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -223,7 +225,7 @@  static inline void ksft_test_result_xfail(const char *msg, ...)
 	va_end(args);
 }
 
-static inline void ksft_test_result_skip(const char *msg, ...)
+static inline __printf(1, 2) void ksft_test_result_skip(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -238,7 +240,7 @@  static inline void ksft_test_result_skip(const char *msg, ...)
 }
 
 /* TODO: how does "error" differ from "fail" or "skip"? */
-static inline void ksft_test_result_error(const char *msg, ...)
+static inline __printf(1, 2) void ksft_test_result_error(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -285,7 +287,7 @@  static inline int ksft_exit_fail(void)
 		  ksft_cnt.ksft_xfail +	\
 		  ksft_cnt.ksft_xskip)
 
-static inline int ksft_exit_fail_msg(const char *msg, ...)
+static inline __printf(1, 2) int ksft_exit_fail_msg(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -312,7 +314,7 @@  static inline int ksft_exit_xpass(void)
 	exit(KSFT_XPASS);
 }
 
-static inline int ksft_exit_skip(const char *msg, ...)
+static inline __printf(1, 2) int ksft_exit_skip(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;