bug#6629: 24.0.50; stack overflow in equal (immediately)

bug#6629: 24.0.50; stack overflow in equal (immediately)

[Drew Adams]

emacs -Q
 
Evaluate these sexps, in turn:
 
(setq default-frame-alist
      '((font . "-*-Lucida Console-normal-r-*-*-14-112-96-96-c-*-iso8859-1")))
 
(defun foo ()
  "..."
  (interactive)
  (setq pop-up-frames  t)
  (setq minibuffer-frame-alist (append foooo minibuffer-frame-alist)))
 
(foo)
 
You get this error message - nothing more:
 
 Stack overflow in equal

(Note that foooo is an unbound variable.)  This bug is new with this binary.
The windows binary posted on 6/28 has no such problem.
 
 
In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
 of 2010-07-12 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.4) --no-opt --cflags -Ic:/xpm/include'
 
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: ENU
  value of $XMODIFIERS: nil
  locale-coding-system: cp1252
  default enable-multibyte-characters: t
 
Major mode: Dired by name
 
Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
 
Recent input:
<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.
 
Load-path shadows:
c:/Emacs-24-2010-07-12/lisp/compare-w hides
c:/Emacs-24-2010-07-12/lisp/vc/compare-w
 
Features:
(shadow sort gnus-util mail-extr message rfc822 mml easymenu 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 dired regexp-opt tooltip ediff-hook vc-hooks lisp-float-type
mwheel dos-w32 disp-table ls-lisp w32-win w32-vars 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 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 multi-tty emacs)

bug#6629: 24.0.50; stack overflow in equal (immediately)

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Date: Tue, 13 Jul 2010 23:35:42 -0700
> Cc: 
> 
> emacs -Q
>  
> Evaluate these sexps, in turn:
>  
> (setq default-frame-alist
>       '((font . "-*-Lucida Console-normal-r-*-*-14-112-96-96-c-*-iso8859-1")))
>  
> (defun foo ()
>   "..."
>   (interactive)
>   (setq pop-up-frames  t)
>   (setq minibuffer-frame-alist (append foooo minibuffer-frame-alist)))
>  
> (foo)
>  
> You get this error message - nothing more:
>  
>  Stack overflow in equal
> 
> (Note that foooo is an unbound variable.)  This bug is new with this binary.
> The windows binary posted on 6/28 has no such problem.

I can see this problem in yesterday's build, but it's gone in today's
build.  With today's binary, I get a new frame popping up with the
debugger saying that foooo is unbound, as expected.

I think Handa-san's change from this morning (reverting his prior
change from 2 days ago) may have fixed this.

So I'm closing this bug.  If it comes back in the next binary you
have, please reopen.