===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/server-fn.c,v
retrieving revision 1.110
retrieving revision 1.111
diff -c -r1.110 -r1.111
*** src/usr.bin/tmux/server-fn.c	2017/07/12 09:07:52	1.110
--- src/usr.bin/tmux/server-fn.c	2017/08/29 09:18:48	1.111
***************
*** 1,4 ****
! /* $OpenBSD: server-fn.c,v 1.110 2017/07/12 09:07:52 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: server-fn.c,v 1.111 2017/08/29 09:18:48 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 164,170 ****
  		return;
  
  	cmd = options_get_string(c->session->options, "lock-command");
! 	if (strlen(cmd) + 1 > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
  		return;
  
  	tty_stop_tty(&c->tty);
--- 164,170 ----
  		return;
  
  	cmd = options_get_string(c->session->options, "lock-command");
! 	if (*cmd == '\0' || strlen(cmd) + 1 > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
  		return;
  
  	tty_stop_tty(&c->tty);