===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/resize.c,v
retrieving revision 1.36
retrieving revision 1.37
diff -c -r1.36 -r1.37
*** src/usr.bin/tmux/resize.c	2019/11/29 16:04:07	1.36
--- src/usr.bin/tmux/resize.c	2020/01/28 08:06:11	1.37
***************
*** 1,4 ****
! /* $OpenBSD: resize.c,v 1.36 2019/11/29 16:04:07 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: resize.c,v 1.37 2020/01/28 08:06:11 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 363,376 ****
  	 * client.
  	 */
  	TAILQ_FOREACH(c, &clients, entry) {
  		if (ignore_client_size(c))
  			continue;
- 		s = c->session;
  		if (c->tty.sy <= s->statuslines || (c->flags & CLIENT_CONTROL))
  			c->flags |= CLIENT_STATUSOFF;
  		else
  			c->flags &= ~CLIENT_STATUSOFF;
- 		s->attached++;
  	}
  
  	/* Walk each window and adjust the size. */
--- 363,377 ----
  	 * client.
  	 */
  	TAILQ_FOREACH(c, &clients, entry) {
+ 		s = c->session;
+ 		if (s != NULL && !(c->flags & CLIENT_UNATTACHEDFLAGS))
+ 			s->attached++;
  		if (ignore_client_size(c))
  			continue;
  		if (c->tty.sy <= s->statuslines || (c->flags & CLIENT_CONTROL))
  			c->flags |= CLIENT_STATUSOFF;
  		else
  			c->flags &= ~CLIENT_STATUSOFF;
  	}
  
  	/* Walk each window and adjust the size. */