segfault crash when loading certain rmail files

[Ulf Rehmann]

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In GNU Emacs 21.2.1 (i386-debian-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-03-22 on raven, modified by Debian
configured using `configure  i386-debian-linux-gnu --prefix=/usr 
--sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib 
--infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --with-x=yes 
--with-x-toolkit=athena --without-gif'
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: C
  locale-coding-system: nil
  default-enable-multibyte-characters: t

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

Emacs 21.2 crashes with segmentation fault when certain (big?)
gzipped RMAIL files are loaded with C-x C-f (find-file).

(Emacs 20.7 can handle the same RMAIL files with no problems.)

The crash happens when the "Automatic file de/compression" is toggled
on, and apparently only with some big files, that is, the compressed
file has a size of 7.8 MB and more. Smaller files can be loaded and
decompressed with no problems, it seems.

Emacs seems to decompress the file and then it crashes saying
"Segmentation fault".

If load the decompressed version of the RMAIL file is loaded, emacs 21
stays alive, also, if "Automatic file de/compression" ist toggled off
and the compressed file is loaded as it is.

Ulf Rehmann

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<menu-bar> <help-menu> <emacs-faq> <help-echo> <help-echo> 
<help-echo> <tool-bar> <Previous> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <emacs-problems> 
<down-mouse-1> <mouse-1> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> C-s 
r m a i l C-s C-s C-s C-s <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <menu-bar> <help-menu> <report-emacs-bug> 
C-g <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <re
port-emacs-bug>

Recent messages:
unzipping efaq.gz...done
unzipping efaq-1.gz...done
Composing main Info directory...
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Composing main Info directory...done
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