===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tty.c,v
retrieving revision 1.374
retrieving revision 1.375
diff -c -r1.374 -r1.375
*** src/usr.bin/tmux/tty.c	2020/05/16 15:36:57	1.374
--- src/usr.bin/tmux/tty.c	2020/05/16 16:07:55	1.375
***************
*** 1,4 ****
! /* $OpenBSD: tty.c,v 1.374 2020/05/16 15:36:57 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: tty.c,v 1.375 2020/05/16 16:07:55 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 154,169 ****
  {
  	struct tty	*tty = data;
  	struct client	*c = tty->client;
  	size_t		 size = EVBUFFER_LENGTH(tty->in);
  	int		 nread;
  
  	nread = evbuffer_read(tty->in, tty->fd, -1);
  	if (nread == 0 || nread == -1) {
  		event_del(&tty->event_in);
  		server_client_lost(tty->client);
  		return;
  	}
! 	log_debug("%s: read %d bytes (already %zu)", c->name, nread, size);
  
  	while (tty_keys_next(tty))
  		;
--- 154,174 ----
  {
  	struct tty	*tty = data;
  	struct client	*c = tty->client;
+ 	const char	*name = c->name;
  	size_t		 size = EVBUFFER_LENGTH(tty->in);
  	int		 nread;
  
  	nread = evbuffer_read(tty->in, tty->fd, -1);
  	if (nread == 0 || nread == -1) {
+ 		if (nread == 0)
+ 			log_debug("%s: read closed", name);
+ 		else
+ 			log_debug("%s: read error: %s", name, strerror(errno));
  		event_del(&tty->event_in);
  		server_client_lost(tty->client);
  		return;
  	}
! 	log_debug("%s: read %d bytes (already %zu)", name, nread, size);
  
  	while (tty_keys_next(tty))
  		;