===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/client.c,v
retrieving revision 1.42
retrieving revision 1.43
diff -u -r1.42 -r1.43
--- src/usr.bin/tmux/client.c	2010/06/28 22:10:42	1.42
+++ src/usr.bin/tmux/client.c	2010/08/22 16:09:49	1.43
@@ -1,4 +1,4 @@
-/* $OpenBSD: client.c,v 1.42 2010/06/28 22:10:42 nicm Exp $ */
+/* $OpenBSD: client.c,v 1.43 2010/08/22 16:09:49 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -297,7 +297,8 @@
 			client_exitmsg = "detached";
 			break;
 		case MSG_EXIT:
-			if (datalen != 0)
+			if (datalen != 0 &&
+			    datalen != sizeof (struct msg_exit_data))
 				fatalx("bad MSG_EXIT size");
 
 			client_write_server(MSG_EXITING, NULL, 0);