23.0.60; x-show-tip crashes Emacs

[Mathias Dahl]

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:

 $ emacs -Q

Paste this code in the *scratch* buffer:

(x-show-tip
 "" nil
 '((border-width . 0)
   (internal-border-width . 0))
 5 100 100)

Evaluate it with C-x C-e. Now Emacs crashes. If the string is not
empty it works well and if any of the borders are greater than zero it
works too.

The code that in the end evaluates the code above is the predictive
package by Toby Cubitt.

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/home/mathias/prj/emacs/etc/DEBUG for instructions.


In GNU Emacs 23.0.60.3 (i686-pc-linux-gnu, GTK+ Version 2.10.3)
 of 2008-02-16 on localhost
Windowing system distributor `The X.Org Foundation', version 11.0.70101000
configured using `configure  '--with-gtk' '--with-gif=no''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: en_US.UTF-8
  value of $LC_CTYPE: en_US.UTF-8
  value of $LC_MESSAGES: en_US.UTF-8
  value of $LC_MONETARY: sv_SE.UTF-8
  value of $LC_NUMERIC: sv_SE.UTF-8
  value of $LC_TIME: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

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

Recent input:
<help-echo> <down-mouse-1> <mouse-1> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<menu-bar> <help-menu> <send-emacs-bug-report>

Recent messages:
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