bug#7616: 24.0.50; bidi; emacs crashes with SIGABRT

[Eduard Wiebe]

 Hi,

emacs crashes with SIGABRT if i do following steps:

1. emacs -Q
2. M-: (setq-default bidi-display-reordering t)
3. M-x info
4. M->

unfortunately i can not provoke a backtrace with gdb, but i observe under gdb, 
that
after M-> and several C-p, the last `previous-line' fails in the "middle" of 
*info*
buffer with `Beginning of buffer' message.



In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.12.12)
 of 2010-12-11 on nirvana
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
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: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
  shell-dirtrack-mode: t
  display-battery-mode: t
  display-time-mode: t
  icomplete-mode: t
  show-paren-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
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
M-x b u g - r e <tab> <M-backspace> <M-backspace> r 
e p - b u <tab> <M-backspace> m e <backspace> <backspace> 
e m - b <tab> <return>

Recent messages:
Ido mode enabled
Loading /home/ew/Repos/cedet.cvs/common/cedet.el (source)...
Setting up CEDET packages...
Source file `/home/ew/Repos/cedet.cvs/ede/ede.el' newer than byte-compiled file
Source file `/home/ew/Repos/cedet.cvs/ede/ede-base.el' newer than byte-compiled 
file
Source file `/home/ew/Repos/cedet.cvs/ede/ede-files.el' newer than 
byte-compiled file
Setting up CEDET packages...done
Loading /home/ew/Repos/cedet.cvs/common/cedet.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Load-path shadows:
/home/ew/Repos/cedet.cvs/speedbar/dframe hides 
/usr/local/share/emacs/24.0.50/lisp/dframe
/home/ew/Repos/cedet.cvs/speedbar/sb-image hides 
/usr/local/share/emacs/24.0.50/lisp/sb-image
/home/ew/Repos/cedet.cvs/common/ezimage hides 
/usr/local/share/emacs/24.0.50/lisp/ezimage
/home/ew/Repos/cedet.cvs/speedbar/speedbar hides 
/usr/local/share/emacs/24.0.50/lisp/speedbar
/home/ew/Repos/cedet.cvs/eieio/eieio-speedbar hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-speedbar
/home/ew/Repos/cedet.cvs/eieio/eieio-datadebug hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-datadebug
/home/ew/Repos/cedet.cvs/eieio/eieio-opt hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-opt
/home/ew/Repos/cedet.cvs/eieio/eieio-base hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-base
/home/ew/Repos/cedet.cvs/eieio/eieio-comp hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-comp
/home/ew/Repos/cedet.cvs/eieio/chart hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/chart
/home/ew/Repos/cedet.cvs/eieio/eieio hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio
/home/ew/Repos/cedet.cvs/eieio/eieio-custom hides 
/usr/local/share/emacs/24.0.50/lisp/emacs-lisp/eieio-custom
/home/ew/Repos/cedet.cvs/semantic/semantic hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/semantic
/home/ew/Repos/cedet.cvs/common/cedet-idutils hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/cedet-idutils
/home/ew/Repos/cedet.cvs/common/cedet-global hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/cedet-global
/home/ew/Repos/cedet.cvs/common/cedet-cscope hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/cedet-cscope
/home/ew/Repos/cedet.cvs/common/mode-local hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/mode-local
/home/ew/Repos/cedet.cvs/srecode/srecode hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/srecode
/home/ew/Repos/cedet.cvs/common/data-debug hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/data-debug
/home/ew/Repos/cedet.cvs/common/cedet hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/cedet
/home/ew/Repos/cedet.cvs/ede/ede hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/ede
/home/ew/Repos/cedet.cvs/common/cedet-files hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/cedet-files
/home/ew/Repos/cedet.cvs/common/inversion hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/inversion
/home/ew/Repos/cedet.cvs/common/pulse hides 
/usr/local/share/emacs/24.0.50/lisp/cedet/pulse

Features:
(shadow sort gnus-util mail-extr message sendmail rfc822 mml mml-sec
mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mailabbrev mail-utils gmm-utils mailheader
emacsbug eieio-opt help-mode view eldoc semantic-el semantic-bovine
bovine-debug semantic-debug ansi-color shell tango-dark-theme unsafep
cedet cedet-contrib-load contrib-loaddefs cogre-load cogre-loaddefs
speedbar-load speedbar-loaddefs ede-load ede-loaddefs ede-speedbar
ede-files ede ede-base ede-auto eieio-speedbar semantic-ia-sb
semantic-analyze semantic-scope semantic-analyze-fcn semantic-sort
semanticdb-el semanticdb semantic-ctxt semantic-format
semantic-util-modes semantic-util semantic semantic-lex semantic-tag
working fame speedbar sb-image ezimage dframe assoc eieio-custom
wid-edit ede-source eieio-base srecode-load srecode srecode-loaddefs
semantic-load semantic-fw semantic-loaddefs mode-local find-func derived
eieio-load eieio-loaddefs cedet-load cedet-compat cedet-loaddefs eieio
inversion cl org-remember org-datetree org byte-opt warnings bytecomp
byte-compile ob-emacs-lisp ob-tangle ob-ref ob-lob ob-table org-footnote
org-src ob-comint comint ob-keys ob org-list org-faces org-compat
org-entities org-macs time-date noutline outline easy-mmode cal-menu
easymenu calendar cal-loaddefs org-install ido uniquify advice help-fns
advice-preload windmove winner ring ibuf-ext ibuffer ffap edmacro kmacro
dired-x dired-aux dired regexp-opt battery time icomplete paren tooltip
ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd
fontset image fringe lisp-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 loaddefs button minibuffer faces cus-face files
text-properties overlay 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)