GNU bug report logs - #13608
24.3.50; ERC doesn't realize the process is gone in ping timer

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Jose A. Ortega Ruiz" <jao <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; ERC doesn't realize the process is gone in ping timer
Date: Sat, 02 Feb 2013 13:53:58 +0100

- Start an ERC session, connecting to, say, freenode.
- Put the laptop to sleep, so that the connection dies.
- Awake the laptop.  The server buffer correctly displays that the
  connection is closed.
- In that buffer, erc-server-last-received-time and erc-server-process
  are now nil, but the send ping timer is still active.  That means that
  the timer function, erc-server-send-ping, keeps getting called and
  erroring, because it assumes that it's always the case that those
  variables are non-nil if the buffer is alive.




In GNU Emacs 24.3.50.1 (i486-pc-linux-gnu, GTK+ Version 3.4.2)
 of 2013-01-30 on dex, modified by Debian
 (emacs-snapshot package, version 2:20130130-1)
Windowing system distributor `The X.Org Foundation', version 11.0.11204000
System Description:	Debian GNU/Linux 7.0 (wheezy)

Configured using:
 `configure --build i486-linux-gnu --host i486-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var
 --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.3.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3.50/site-lisp:/usr/share/emacs/site-lisp
 --without-compress-info --with-crt-dir=/usr/lib/i386-linux-gnu/
 --with-x=yes --with-x-toolkit=gtk3 --with-imagemagick=yes'

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: ERC

Minor modes in effect:
  diff-auto-refine-mode: t
  erc-truncate-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-services-mode: t
  erc-ring-mode: t
  erc-notify-mode: t
  erc-networks-mode: t
  erc-netsplit-mode: t
  erc-match-mode: t
  erc-dcc-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-autojoin-mode: t
  erc-pcomplete-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  winner-mode: t
  recentf-mode: t
  ido-everywhere: t
  display-time-mode: t
  ncm-mode: t
  shell-dirtrack-mode: t
  show-paren-mode: t
  global-auto-revert-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t

Recent input:
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-a C-s e r c - s e r v e r - s e n C-w C-w C-s 
C-s C-s C-s C-s C-s C-s C-s <return> C-n C-n C-n C-n 
C-n C-n C-p C-p C-p C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-p C-p C-p C-p C-p C-x o <return> 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-x o C-x b f r e <return> M-: ( e r c - s 
e r v e r - s e <tab> n d <tab> - p i <tab> SPC ( c 
u r r e n t - b u f f e r ) ) <return> q M-: e r c 
- s e r v e r - l a s t - r e <tab> <return> M-( <backspace> 
C-d M-: ( s e t q SPC e r c e - s e r v e r - l a s 
t - r e c e i v e d - t i m e SPC 0 ) C-a C-f C-f C-f 
C-f C-f C-f C-f C-f C-f C-d C-e <return> C-p C-n M-: 
M-p M-p M-p <return> q M-: e r c - s e r v e r - p 
r o c e s s <return> M-: M-p <return> C-x k <return> 
C-c C-SPC C-c C-SPC C-c C-n M-x e r c - r e <tab> C-g 
M-x r e p o r t - b u g <return>

Recent messages:
Error in timer: (error "Buffer irc.freenode.net:6667 has no process")
nilError during redisplay: (eval (format " %S" (hash-table-count erc-channel-users))) signaled (wrong-type-argument hash-table-p nil)
Error in timer: (error "Buffer irc.freenode.net:6667 has no process")
Error during redisplay: (eval (format " %S" (hash-table-count erc-channel-users))) signaled (wrong-type-argument hash-table-p nil) [3 times]
nilError during redisplay: (eval (format " %S" (hash-table-count erc-channel-users))) signaled (wrong-type-argument hash-table-p nil)
Error during redisplay: (eval (format " %S" (hash-table-count erc-channel-users))) signaled (wrong-type-argument hash-table-p nil) [2 times]
Error in timer: (error "Invalid timer")
Making completion list...
Quit
Error in timer: (error "Invalid timer")

Load-path shadows:
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/home/jao/etc/emacs/site/custom/jao-frm-config hides /home/jao/etc/emacs/custom/jao-frm-config
/home/jao/etc/emacs/site/custom/jao-eshell hides /home/jao/etc/emacs/custom/jao-eshell
/home/jao/etc/emacs/site/custom/jao-gnus hides /home/jao/etc/emacs/custom/jao-gnus
/home/jao/etc/emacs/site/custom/jao-skels hides /home/jao/etc/emacs/custom/jao-skels
/home/jao/etc/emacs/site/custom/jao-compile hides /home/jao/etc/emacs/custom/jao-compile
/home/jao/etc/emacs/site/custom/jao-undo-tree hides /home/jao/etc/emacs/custom/jao-undo-tree
/home/jao/etc/emacs/site/custom/jao-org hides /home/jao/etc/emacs/custom/jao-org
/home/jao/etc/emacs/site/custom/jao-browse-url hides /home/jao/etc/emacs/custom/jao-browse-url
/home/jao/etc/emacs/site/custom/jao-lisp hides /home/jao/etc/emacs/custom/jao-lisp
/home/jao/etc/emacs/site/custom/jao-elisp hides /home/jao/etc/emacs/custom/jao-elisp
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/home/jao/etc/emacs/site/custom/jao-mail hides /home/jao/etc/emacs/custom/jao-mail
/home/jao/etc/emacs/site/custom/jao-markdown hides /home/jao/etc/emacs/custom/jao-markdown
/home/jao/etc/emacs/site/custom/jao-babel hides /home/jao/etc/emacs/custom/jao-babel
/home/jao/etc/emacs/site/custom/jao-dired hides /home/jao/etc/emacs/custom/jao-dired
/home/jao/etc/emacs/site/custom/jao-fold hides /home/jao/etc/emacs/custom/jao-fold
/home/jao/etc/emacs/site/custom/jao-erlang hides /home/jao/etc/emacs/custom/jao-erlang
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/home/jao/etc/emacs/lib/namazu hides /usr/share/emacs-snapshot/site-lisp/namazu/namazu
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/home/jao/.emacs.d/elpa/erlang-20120831.1448/erlang-start hides /usr/share/emacs-snapshot/site-lisp/erlang/erlang-start
/home/jao/.emacs.d/elpa/erlang-20120831.1448/erlang-eunit hides /usr/share/emacs-snapshot/site-lisp/erlang/erlang-eunit
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/home/jao/.emacs.d/elpa/erlang-20120831.1448/erlang hides /usr/share/emacs-snapshot/site-lisp/erlang/erlang
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/usr/share/emacs/24.3.50/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup
/home/jao/lib/elisp/project-root/find-cmd hides /usr/share/emacs/24.3.50/lisp/find-cmd
/home/jao/etc/emacs/lib/cap-words hides /usr/share/emacs/24.3.50/lisp/progmodes/cap-words
~/lib/elisp/ob-scheme hides /usr/share/emacs/24.3.50/lisp/org/ob-scheme
/home/jao/.emacs.d/elpa/magit-20130123.1617/.dir-locals hides /usr/share/emacs/24.3.50/lisp/gnus/.dir-locals
/home/jao/lib/elisp/emms/tq hides /usr/share/emacs/24.3.50/lisp/emacs-lisp/tq
/home/jao/.emacs.d/elpa/markdown-mode-20130121.1039/markdown-mode hides /home/jao/usr/bigml/emacs/ext/markdown-mode

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multi-tty emacs)

-- 
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actions to habit, and mean actions to fear. -Friedrich Nietzsche,
philosopher (1844-1900)

Message #8 received at 13608 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: "Jose A. Ortega Ruiz" <jao <at> gnu.org>
Cc: 13608 <at> debbugs.gnu.org
Subject: Re: bug#13608: 24.3.50;
 ERC doesn't realize the process is gone in ping timer
Date: Sun, 27 Dec 2015 22:19:12 +0100

"Jose A. Ortega Ruiz" <jao <at> gnu.org> writes:

> - Start an ERC session, connecting to, say, freenode.
> - Put the laptop to sleep, so that the connection dies.
> - Awake the laptop.  The server buffer correctly displays that the
>   connection is closed.
> - In that buffer, erc-server-last-received-time and erc-server-process
>   are now nil, but the send ping timer is still active.  That means that
>   the timer function, erc-server-send-ping, keeps getting called and
>   erroring, because it assumes that it's always the case that those
>   variables are non-nil if the buffer is alive.

This should now be fixed in Emacs 25.1.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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