bug#17870: 24.3.91; Crashing when revert-buffer on file with large size reduction

bug#17870: 24.3.91; Crashing when revert-buffer on file with large size reduction

[Axel Bregnsbo]

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;;; To reproduce bug
;;; 1) shell: dd if=/dev/zero of=test.log bs=1000 count=17000  # 17MB cause
crash, 1.7MB do not
;;; 2) shell: emacs -Q
;;; 3) Emacs: execute elisp setup code below
;;; 4) Emacs: load test.log file
;;; 5) shell: echo "test" > test.log
;;; 6) Emacs: M-p
;;; 7) Emacs crashes with the message "Error in pre-command-hook
(tooltip-hide): (wrong-type-argument listp undo)"

(progn
  ;; Display PID in windows title to make it easier to know which Emacs to
kill
  (setq frame-title-format (concat (system-name) "  " (number-to-string
(emacs-pid))))

  ;;; Prevent the warning pop-up when undo information gets too large.
  (if (boundp 'warning-suppress-types)
      (add-to-list 'warning-suppress-types '(undo discard-info))
      (setq warning-suppress-types '(undo discard-info)))

  (define-derived-mode backend-log-mode tcl-mode "backend-log")

  (add-to-list 'auto-mode-alist '(".log\\'" . backend-log-mode))

  (setq revert-without-query '(".*"))
  (global-set-key "\M-p"
                  'revert-buffer)
  )

;;; EOF



In GNU Emacs 24.3.91.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.10.4)
 of 2014-06-25 on backend17.dk.vitesse.com
Windowing system distributor `The X.Org Foundation', version 11.0.70101000
System Description: Red Hat Enterprise Linux Client release 5.4 (Tikanga)

Configured using:
 `configure --prefix=/users/abb/scripts'

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> M-x r e p o r t - m <backspace> e m a c
s - SPC b u g <backspace> <backspace> <backspace> C-g
C-x C-f d e <tab> 6 <tab> 6 _ b u <tab> <backspace>
<backspace> <tab> <tab> <return> M-x e r <backspace>
<backspace> r e p o r t - m e <tab> <backspace> <backspace>
e m <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Quit
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
help-fns mail-prsvr mail-utils help-mode easymenu time-date tooltip
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 16 72540 7408)
 (symbols 48 17449 0)
 (miscs 40 39 138)
 (strings 32 9384 4535)
 (string-bytes 1 262164)
 (vectors 16 8885)
 (vector-slots 8 371673 15464)
 (floats 8 64 322)
 (intervals 56 269 24)
 (buffers 960 13)
 (heap 1024 370025 536))

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bug#17870: 24.3.91; Crashing when revert-buffer on file with large size reduction

[Andreas Schwab]

Axel Bregnsbo <bregnsbo@gmail.com> writes:

>       (setq warning-suppress-types '(undo discard-info)))

This must be a list of lists.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

bug#17870: 24.3.91; Crashing when revert-buffer on file with large size reduction

[Stefan Monnier]

> ;;; 7) Emacs crashes with the message "Error in pre-command-hook
> (tooltip-hide): (wrong-type-argument listp undo)"

Does it actually "crash" (i.e. the programs actually exits abruptly)?
Or does it just signal the above error and then keeps on running?


        Stefan