$OpenBSD: patch-gcc_cp_parser_c,v 1.3 2010/04/29 16:45:53 jsg Exp $
--- gcc/cp/parser.c.orig	Thu Jan 14 01:51:42 2010
+++ gcc/cp/parser.c	Wed Apr 28 23:09:27 2010
@@ -17630,7 +17630,7 @@ 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);
 	}
