From 7d440d48e6465ef859d3a88032b1d5c021ff9894 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20H=C3=A5llberg?= <gustav@gmail.com>
Date: Wed, 31 Dec 2008 13:42:30 -0500
Subject: when compiling with GCC, use attribute((format, (printf, ...)) for
 tty_printf


diff --git a/tty.h b/tty.h
index ca4b554..9ef4d0b 100644
--- a/tty.h
+++ b/tty.h
@@ -40,9 +40,16 @@ void input_moveto			__P ((int new_pos));
 
 #else /* USE_LOCALE */
 
+#ifdef __GNUC__
+ #define PRINTF_FUNCTION(string, first) \
+	__attribute__ ((format (printf, string, first)))
+#else
+ #define PRINTF_FUNCTION(string, first)
+#endif
+
 void tty_puts           __P ((const char *s));
 void tty_putc           __P ((char c));
-void tty_printf         __P ((const char *format, ...));
+void tty_printf         __P ((const char *format, ...)) PRINTF_FUNCTION(1, 2);
 int  tty_read           __P ((char *buf, size_t count));
 void tty_gets           __P ((char *s, int size));
 void tty_flush          __P ((void));
-- 
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