Bug#425417: jed: Segmentation fault with some precompiled slang files

[G�Milde]

Package: jed
Version: 1:0.99.18+dfsg.1-6
Severity: important


Jed crashes with a segmentation fault, if a byte-compiled version (*.slc
file) is evaluated that contains a literal string with the "$" suffix (a
feature added in S-Lang 2 for shell like variable substitution).

An example is 'latex_external.sl' from JoergsLatexMode
(http://www.minet.uni-jena.de/~joergs/jjm-r130.tgz). It contains the lines

    insert("Current configuration: $LaTeX_Config\n\n"$);
...
       variable pid = expand_and_run_cmd("jed-script $latex_comm watch"$,

which leads to Jed crashing when opening a LaTex file if JoergsLatexMode is
installed and byte-compiled.


The problem is a bug in the S-Lang library, as the author of Jed and S-Lang
wrote in a mail to the jed-users list 
(http://www.ruptured-duck.com/jed-users/msg01916.html)

  slang-2.0.6 had a bug in the handling of byte-compiled files
  containing strings with the "$" suffix, e.g.,

      file = "$HOME/foo.sl"$;

  This bug was corrected in 2.0.7.

While currently only seldom occuring, the problem is hard to detect (as the
usual S-Lang debugging methods do not work once Jed crashed) and can lead to
data loss. 

A fix is to use libslang2 version >= 2.0.7-1 (now in unstable).

Please let jed (and xjed) depend on this S-Lang version.

Guenter Milde

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.18-4-686 (SMP w/1 CPU core)
Locale: LANG=de_DE, LC_CTYPE=de_DE (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash

Versions of packages jed depends on:
ii  jed-common            1:0.99.18+dfsg.1-6 S-Lang runtime files for jed and x
ii  libc6                 2.5-7              GNU C Library: Shared libraries
ii  libgpmg1              1.19.6-22          General Purpose Mouse - shared lib
ii  libslang2             2.0.6-4            The S-Lang programming library - r

jed recommends no packages.

-- no debconf information