$OpenBSD: patch-gdb_buildsym_c,v 1.1 2010/06/27 20:58:10 ckuethe Exp $
--- gdb/buildsym.c.orig	Sat Jun 26 15:37:00 2010
+++ gdb/buildsym.c	Sat Jun 26 15:37:03 2010
@@ -597,7 +597,7 @@ start_subfile (char *name, char *dirname)
 	  && !IS_ABSOLUTE_PATH (subfile->name)
 	  && subfile->dirname != NULL)
 	subfile_name = concat (subfile->dirname, SLASH_STRING,
-			       subfile->name, NULL);
+			       subfile->name, (void *)NULL);
       else
 	subfile_name = subfile->name;
 
