$OpenBSD: patch-gcc_tree-mudflap_c,v 1.5 2009/04/16 18:36:48 espie Exp $
--- gcc/tree-mudflap.c.orig	Sat Sep  1 17:28:30 2007
+++ gcc/tree-mudflap.c	Tue Apr  7 19:38:59 2009
@@ -235,7 +235,7 @@ mf_file_function_line_tree (location_t location)
   else
     op = name = cp = "";
 
-  string = concat (file, colon, line, op, name, cp, NULL);
+  string = concat (file, colon, line, op, name, cp, (void *)0);
   result = mf_build_string (string);
   free (string);
 
