1 files changed, 8 insertions, 4 deletions
diff --git a/payloads/libpayload/include/stdio.h b/payloads/libpayload/include/stdio.h
index 924d17e849..d2db640118 100644
--- a/payloads/libpayload/include/stdio.h
+++ b/payloads/libpayload/include/stdio.h
@@ -42,10 +42,14 @@ extern FILE *stdout, *stdin, *stderr;
  * @defgroup printf Print functions
  * @{
  */
-int snprintf(char *str, size_t size, const char *fmt, ...);
-int sprintf(char *str, const char *fmt, ...);
-int printf(const char *fmt, ...);
-int fprintf(FILE *file, const char *fmt, ...);
+int snprintf(char *str, size_t size, const char *fmt, ...)
+	__attribute__ ((format (printf, 3, 4)));
+int sprintf(char *str, const char *fmt, ...)
+	__attribute__ ((format (printf, 2, 3)));
+int printf(const char *fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
+int fprintf(FILE *file, const char *fmt, ...)
+	__attribute__ ((format (printf, 2, 3)));
 /** @} */
 
 void perror(const char *s);