$OpenBSD: patch-src_vim_h,v 1.3 2013/03/16 22:56:44 sthen Exp $
--- src/vim.h.orig	Thu Mar  7 15:08:35 2013
+++ src/vim.h	Thu Mar  7 15:25:57 2013
@@ -262,6 +262,7 @@
 # include "os_beos.h"
 # define __ARGS(x)  x
 #endif
+#define UNUSED __attribute__((unused))
 
 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) \
 	&& (!defined(MACOS_X) || defined(HAVE_CONFIG_H))
