$OpenBSD: patch-gcc_cp_parser_c,v 1.2 2009/11/02 23:00:08 jsg Exp $
--- gcc/cp/parser.c.orig	Mon Jul 13 16:11:20 2009
+++ gcc/cp/parser.c	Sat Oct 31 03:52:37 2009
@@ -17626,7 +17626,7 @@ cp_parser_require (cp_parser* parser,
       /* Output the MESSAGE -- unless we're parsing tentatively.  */
       if (!cp_parser_simulate_error (parser))
 	{
-	  char *message = concat ("expected ", token_desc, NULL);
+	  char *message = concat ("expected ", token_desc, (void *)0);
 	  cp_parser_error (parser, message);
 	  free (message);
 	}
