$OpenBSD: patch-gcc_cp_parser_c,v 1.7 2009/04/16 18:36:48 espie Exp $
--- gcc/cp/parser.c.orig	Sun May 11 21:58:40 2008
+++ gcc/cp/parser.c	Tue Apr  7 19:38:59 2009
@@ -16522,7 +16522,7 @@ 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);
 	}
