bug#6618: 24.0.50; stack overflow in equal

[john ffitch <jpff@codemist.co.uk>]

If I start emacs with my usual command line I get a stack overflow

harvey:~/GNU_21/emacs/trunk> src/emacs -geometry 84x46+64+10 -fn "-etl-fixed-medium-r-normal--16-160-72-72-c-80-iso8859-1"
Stack overflow in equal
harvey:~/GNU_21/emacs/trunk> 

if I omit the font infprmation it starts.  I have been using this font
for a very long time.  This is with update from bzr this morning.  



In GNU Emacs 24.0.50.8 (x86_64-unknown-linux-gnu, GTK+ Version 2.18.6)
 of 2010-07-12 on harvey
Windowing system distributor `The X.Org Foundation', version 11.0.10605000
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_GB.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Mail

Minor modes in effect:
  auto-image-file-mode: t
  show-paren-mode: t
  display-time-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> C-x C-f ~ / d i a <tab> <return> 
C-v <down-mouse-1> <mouse-1> C-x C-f R M A <tab> <return> 
y M-R p r e m i e r <return> M-m C-x C-k <return> M-x 
n C-g M-x r e p o r <tab> <return>

Recent messages:
Parsing /home/jpff/.mailrc... done
Invalid face reference: my-trailing-space-face [10 times]
No keyboard macro defined.  Create one? (y or n) 
Invalid face reference: my-trailing-space-face [5 times]
Please answer y or n.  No keyboard macro defined.  Create one? (y or n) 
Invalid face reference: my-trailing-space-face [5 times]
QuitInvalid face reference: my-trailing-space-face
Invalid face reference: my-trailing-space-face [4 times]
QuitInvalid face reference: my-trailing-space-face
Invalid face reference: my-trailing-space-face [19 times]

Load-path shadows:
/home/jpff/GNU_21/local-lisp/autotest-mode hides /usr/local/share/emacs/site-lisp/autotest-mode
/home/jpff/GNU_21/local-lisp/autoconf-mode hides /usr/local/share/emacs/site-lisp/autoconf-mode
/home/jpff/GNU_21/local-lisp/scroll-lock hides /home/jpff/GNU_21/emacs/trunk/lisp/scroll-lock
/home/jpff/GNU_21/local-lisp/t-mouse hides /home/jpff/GNU_21/emacs/trunk/lisp/t-mouse
/home/jpff/GNU_21/local-lisp/ruler-mode hides /home/jpff/GNU_21/emacs/trunk/lisp/ruler-mode
/home/jpff/GNU_21/local-lisp/emerge hides /home/jpff/GNU_21/emacs/trunk/lisp/vc/emerge
/home/jpff/GNU_21/local-lisp/url-gw hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-gw
/home/jpff/GNU_21/local-lisp/url-file hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-file
/home/jpff/GNU_21/local-lisp/url-cid hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-cid
/home/jpff/GNU_21/local-lisp/url-parse hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-parse
/home/jpff/GNU_21/local-lisp/url-cache hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-cache
/home/jpff/GNU_21/local-lisp/url-http hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-http
/home/jpff/GNU_21/local-lisp/url-misc hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-misc
/home/jpff/GNU_21/local-lisp/url hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url
/home/jpff/GNU_21/local-lisp/url-auth hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-auth
/home/jpff/GNU_21/local-lisp/url-ldap hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-ldap
/home/jpff/GNU_21/local-lisp/url-news hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-news
/home/jpff/GNU_21/local-lisp/url-vars hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-vars
/home/jpff/GNU_21/local-lisp/url-cookie hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-cookie
/home/jpff/GNU_21/local-lisp/url-nfs hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-nfs
/home/jpff/GNU_21/local-lisp/url-ns hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-ns
/home/jpff/GNU_21/local-lisp/url-irc hides /home/jpff/GNU_21/emacs/trunk/lisp/url/url-irc
/home/jpff/GNU_21/local-lisp/remember hides /home/jpff/GNU_21/emacs/trunk/lisp/textmodes/remember
/home/jpff/GNU_21/local-lisp/socks hides /home/jpff/GNU_21/emacs/trunk/lisp/net/socks

Features:
(shadow emacsbug edmacro kmacro mailabbrev mailalias etach sendmail
mime-compose mail-alias-menu mailcrypt mail-extr comint ring rmail
mail-utils eldoc package image-file logger crypt crypt++ crypt+pgp-pub
paren cal-julian uniquify advice help-fns advice-preload view
cal-china cal-bahai cal-islam cal-hebrew lunar solar cal-dst appt
diary-lib diary-loaddefs holidays hol-loaddefs regexp-opt cal-menu
easymenu calendar cal-loaddefs time 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
mldrag 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
dynamic-setting font-render-setting gtk x-toolkit x multi-tty emacs)

==John ffitch