Index: src/libcfa/stdhdr/assert.h
===================================================================
--- src/libcfa/stdhdr/assert.h	(revision 921fe6ad27e90b63b7bddda41b0caffdbfaa8ab8)
+++ src/libcfa/stdhdr/assert.h	(revision e59c088f34a5a9a46dbbbf07e83e5e7eb0c27cdc)
@@ -10,6 +10,6 @@
 // Created On       : Mon Jul  4 23:25:26 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Jul 20 21:06:48 2017
-// Update Count     : 11
+// Last Modified On : Mon Jul 31 14:52:43 2017
+// Update Count     : 12
 // 
 
@@ -26,5 +26,5 @@
 	#define __VSTRINGIFY__(str) __STRINGIFY__(str)
 	#define assertf(expr, fmt, ...) ((expr) ? ((void)0) : __assert_fail_f(__VSTRINGIFY__(expr), __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, ## __VA_ARGS__ ))
-	void __assert_fail_f( const char *assertion, const char *file, unsigned int line, const char *function, const char *fmt, ... ) __attribute__((noreturn));
+	void __assert_fail_f( const char *assertion, const char *file, unsigned int line, const char *function, const char *fmt, ... ) __attribute__((noreturn, format(printf, 5, 6)));
 #endif