ref: 14e9e565715db5e1d1fc92aa4f3d31b488b00112
parent: 51a73a6c5c724353702e01c37a1d5dc8da377bd8
author: Turo Lamminen <[email protected]>
date: Sat Feb 17 11:15:13 EST 2018
Add format string attribute to TXT_snprintf
--- a/textscreen/txt_main.h
+++ b/textscreen/txt_main.h
@@ -122,6 +122,17 @@
TXT_INPUT_TEXT,
} txt_input_mode_t;
+
+#ifdef __GNUC__
+
+#define PRINTF_ATTR(fmt, first) __attribute__((format(printf, fmt, first)))
+
+#else // __GNUC__
+
+#define PRINTF_ATTR(fmt, first)
+
+#endif // __GNUC__
+
// Initialize the screen
// Returns 1 if successful, 0 if failed.
int TXT_Init(void);
@@ -181,7 +192,7 @@
int TXT_vsnprintf(char *buf, size_t buf_len, const char *s, va_list args);
// Safe version of snprintf().
-int TXT_snprintf(char *buf, size_t buf_len, const char *s, ...);
+int TXT_snprintf(char *buf, size_t buf_len, const char *s, ...) PRINTF_ATTR(3, 4);
#endif /* #ifndef TXT_MAIN_H */