23.0.60; x-show-tip crashes Emacs

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 emacs-pretest-bug@gnu.org 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:
For information about GNU Emacs and the GNU system, type C-h C-a.

Re: 23.0.60; x-show-tip crashes Emacs

[Glenn Morris]

"Mathias Dahl" wrote:

> (x-show-tip
>  "" nil
>  '((border-width . 0)
>    (internal-border-width . 0))
>  5 100 100)
>
> Evaluate it with C-x C-e.

This also crashes Emacs 21 and 22.

Re: 23.0.60; x-show-tip crashes Emacs

[Jan Djärv]

Mathias Dahl skrev:
> 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 emacs-pretest-bug@gnu.org 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.
> 

This is a strange tip to show, it is basically useless.  Anyway I checked in a 
fix in HEAD.  I don't think this is critical enough to go in the 22 branch.

	Jan D.

Re: 23.0.60; x-show-tip crashes Emacs

[Mathias Dahl]

> This is a strange tip to show, it is basically useless.

Probably, yes, it was caused by a small bug in the `predictive'
package. Still, a bug in a elisp package should not result in a crash
of Emacs.

> Anyway I checked in a fix in HEAD.  I don't think this is critical
> enough to go in the 22 branch.

Thanks.