Another crash in scrolling.

[David Kastrup]

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Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Ok, this time I have a screenshot.  Oh, RATS.  It is a screenshot of
the debugger window.  Ok, so I don't have one.  But there was a large
image with the cursor on it at the bottom of the window in question,
and I pressed the Page-Down key (bound to scroll-up).  Quite likely
lower in the file were more images.

Here is at least the dump, "it" does not seem set to any useful
value.  Probably I should set the breakpoint on abort in order to get
a useful backtrace.

Breakpoint 1, abort () at /home/tmp/emacs/src/emacs.c:456
456       kill (getpid (), SIGABRT);
(gdb) bt
#0  abort () at /home/tmp/emacs/src/emacs.c:456
#1  0x080997b0 in move_it_vertically_backward (it=0xe6c, dy=0)
    at /home/tmp/emacs/src/xdisp.c:6370
#2  0x080be7c0 in window_scroll (window=139571676, n=1, whole=1, noerror=0)
    at /home/tmp/emacs/src/window.c:4570
#3  0x080be95d in scroll_command (n=137490449, direction=1)
    at /home/tmp/emacs/src/window.c:4999
#4  0x080be9b7 in Fscroll_up (arg=3353) at /home/tmp/emacs/src/window.c:5015
#5  0x08171c25 in Ffuncall (nargs=2, args=0xbfe60574)
    at /home/tmp/emacs/src/eval.c:2783
#6  0x0816e938 in Fcall_interactively (function=137687969, 
    record_flag=137490449, keys=137547324) at /home/tmp/emacs/src/callint.c:877
#7  0x081194cf in Fcommand_execute (cmd=137687969, record_flag=137490449, 
    keys=137490449, special=137490449) at /home/tmp/emacs/src/keyboard.c:9697
#8  0x08120155 in command_loop_1 () at /home/tmp/emacs/src/keyboard.c:1792
#9  0x0816ff52 in internal_condition_case (bfun=0x811fdfc <command_loop_1>, 
    handlers=137551441, hfun=0x8119ddc <cmd_error>)
    at /home/tmp/emacs/src/eval.c:1385
#10 0x08114886 in command_loop_2 () at /home/tmp/emacs/src/keyboard.c:1319
#11 0x0816fe61 in internal_catch (tag=3353, func=0x8114868 <command_loop_2>, 
    arg=137490449) at /home/tmp/emacs/src/eval.c:1144
#12 0x08114695 in command_loop () at /home/tmp/emacs/src/keyboard.c:1298
#13 0x0811472f in recursive_edit_1 () at /home/tmp/emacs/src/keyboard.c:991
#14 0x0811482a in Frecursive_edit () at /home/tmp/emacs/src/keyboard.c:1052
#15 0x08113bb1 in main (argc=3, argv=0xbfe60d84)
    at /home/tmp/emacs/src/emacs.c:1766
(gdb) xbacktrace
"scroll-up"
"call-interactively"
(gdb) 



In GNU Emacs 22.0.50.4 (i686-pc-linux-gnu, GTK+ Version 2.6.2)
 of 2005-02-20 on lola.goethe.zz
Distributor `The X.Org Foundation', version 11.0.60802000
configured using `configure '--prefix=/usr/local/emacs-21' '--with-gtk' 
'--without-toolkit-scroll-bars''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-undo-mode: t
  TeX-PDF-mode: t
  auto-compression-mode: t
  desktop-save-mode: t
  file-name-shadow-mode: t
  iswitchb-mode: t
  minibuffer-electric-default-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  line-number-mode: t

Recent input:
M-x g n u <tab> <return> n n 3 <return> SPC E q M-x 
r e p o r t - e m a c s - b u <tab> <return>

Recent messages:
Processing kill file /home/dak/News/comp.emacs.KILL...done
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-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum