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Gnus crashes Emacs in X mode

From: Richard Krush
Subject: Gnus crashes Emacs in X mode
Date: Thu, 31 Oct 2002 14:36:39 -0800

This bug report will be sent to the Free Software Foundation,
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Please write in English, because the Emacs maintainers do not have
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Your bug report will be posted to the address@hidden mailing list,
and to the gnu.emacs.bug news group.

In GNU Emacs 21.2.1 (i386--freebsd, X toolkit, Xaw3d scroll bars)
 of 2002-10-15 on olimp.attbi.com
configured using `configure  --x-libraries=/usr/X11R6/lib 
--x-includes=/usr/X11R6/include --prefix=/usr/local i386--freebsd'
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_US.ISO_8859-1
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:


I apologize if this is really a Gnus bug, but I'm inclined to think
that it's actually a bug with Emacs. It happens with Gnus v5.9.0 (the
one that came with this Emacs version) as well as Oort Gnus
v0.0.7. The bug occurs only in the X mode of Emacs and when triggered
causes it to crash with fatal error 11 and core being dumped. To
trigger the bug, I only need to fetch a large number of article
headers when reading an Usenet group and then press 'q' to quit
(perhaps it's related to large buffer being closed?). This bug happens
even without any Emacs configurations being set and with minimal Gnus
configurations to allow the reproduction of the bug.

Another important point to make is that this bug MIGHT be specific to
my operating system, X server, or other libraries needed for Emacs,
therefore I include that information as well:

Operating system: FreeBSD 4.7-RELEASE
X server: XFree86-4.2.0_1
Other libraries that were needed to compile/run Emacs:

Below I also include the relevant portion of GDB trace when the crash
happens (slightly edited to fit in 80 columns):

-- CUT ---------------------------------------------------------
Program received signal SIGILL, Illegal instruction.
0x8bc45e8 in ?? ()
(gdb) bt
#0  0x8bc45e8 in ?? ()
#1  0x2851a3d4 in _XomConvert () from
#2  0x2851973b in _XomGenericTextExtents () from
#3  0x285197f0 in _XmbGenericTextExtents () from
#4  0x28389021 in XmbTextExtents () from /usr/X11R6/lib/libX11.so.6
-- CUT ---------------------------------------------------------

Trank you!

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