[PATCH v19 05/24] selftests/vm/pkeys: Make gcc check arguments of sigsafe_printf()

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From: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>

This will help us ensure we print pkey_reg_t values correctly in
different architectures.

Signed-off-by: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>
Signed-off-by: Sandipan Das <sandipan@xxxxxxxxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxx>
---
 tools/testing/selftests/vm/pkey-helpers.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h
index 3ed2f021bf7a0..7f18a82e54fc8 100644
--- a/tools/testing/selftests/vm/pkey-helpers.h
+++ b/tools/testing/selftests/vm/pkey-helpers.h
@@ -27,6 +27,10 @@
 #define DPRINT_IN_SIGNAL_BUF_SIZE 4096
 extern int dprint_in_signal;
 extern char dprint_in_signal_buffer[DPRINT_IN_SIGNAL_BUF_SIZE];
+
+#ifdef __GNUC__
+__attribute__((format(printf, 1, 2)))
+#endif
 static inline void sigsafe_printf(const char *format, ...)
 {
 	va_list ap;
-- 
2.17.1





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