bug#3112: 23.0.92; segfault in display-supports-face-attributes-p

[Richard Hansen <rhansen@bbn.com>]

I figured out how to reproduce this segfault:

Set .emacs to the following:

(custom-set-faces
  '(default ((t (:height 121 :family "something-invalid")))))

Then start emacs and let the mouse hover over something that would 
display a tooltip.  After a second or so you'll get the segfault.

-Richard


Richard Hansen wrote:
> Emacs crashed with a segfault.  I'm not sure what happened -- I was 
> doing something else at the time (not in Emacs) and when I tried to 
> Alt-Tab back to my Emacs window, I couldn't find it.  That's when I 
> noticed that bash had printed 'Segmentation fault'.
> 
> I've attached a gdb backtrace.
> 
> In GNU Emacs 23.0.92.1 (i486-pc-linux-gnu, GTK+ Version 2.16.1)
>  of 2009-04-24 on iridium, modified by Debian
>  (emacs-snapshot package, version 1:20090423-1~jaunty1)
> Windowing system distributor `The X.Org Foundation', version 11.0.10600000
> configured using `configure  '--build' 'i486-linux-gnu' '--host' 
> 'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' 
> '--libexecdir=/usr/lib' '--localstatedir=/var' 
> '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' 
> '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.92/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.92/site-lisp:/usr/share/emacs/site-lisp' 
> '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu' 
> 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN 
> -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 
> 'CPPFLAGS=''
> 
> 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: en_DK.UTF-8
>   value of $LANG: en_US.UTF-8
>   value of $XMODIFIERS: nil
>   locale-coding-system: utf-8-unix
>   default-enable-multibyte-characters: t
> 
> Major mode: Org
> 
> Minor modes in effect:
>   flyspell-mode: t
>   show-paren-mode: t
>   mouse-sel-mode: t
>   global-hl-line-mode: t
>   cua-mode: t
>   tabbar-mwheel-mode: t
>   tabbar-mode: t
>   global-whitespace-mode: t
>   tooltip-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-encryption-mode: t
>   auto-compression-mode: t
>   column-number-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>