-/* $Cambridge: exim/src/src/mytypes.h,v 1.7 2009/11/16 19:50:37 nm4 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/* If gcc is being used to compile Exim, we can use its facility for checking
the arguments of printf-like functions. This is done by a macro. */
-#ifdef __GNUC__
+#if defined(__GNUC__) || defined(__clang__)
#define PRINTF_FUNCTION(A,B) __attribute__((format(printf,A,B)))
+#define ARG_UNUSED __attribute__((__unused__))
#else
#define PRINTF_FUNCTION(A,B)
+#define ARG_UNUSED /**/
#endif