[Bug 1060249] Re: frontend crashed with signal 5 in free_pending_nulls()

[Jean-Baptiste Lallement]

I think the problem is that the perl gtk binding uses the old version of
gtk library but the schema is migrated to the version in Quantal and the
location of the key changed and is now in
com.canonical.desktop.interface.scollbar-mode

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Title:
  frontend crashed with signal 5 in free_pending_nulls()

Status in “debconf” package in Ubuntu:
  Confirmed
Status in “debconf” source package in Precise:
  Invalid
Status in “debconf” source package in Quantal:
  Confirmed

Bug description:
  Crashed during upgrade from Precise to Quantal without any visible
  effect

  TEST CASE:
  1. Install Precise 12.04.1
  2. Upgrade to Quantal

  ACTUAL RESULT
  This crash is reported on first login after upgrade.

  
  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: debconf 1.5.46ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
  Uname: Linux 3.5.0-16-generic x86_64
  ApportVersion: 2.6.1-0ubuntu1
  Architecture: amd64
  Date: Tue Oct  2 14:59:09 2012
  ExecutablePath: /usr/share/debconf/frontend
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  InterpreterPath: /usr/bin/perl
  PackageArchitecture: all
  ProcCmdline: /usr/bin/perl -w /usr/share/debconf/frontend /var/lib/dpkg/info/man-db.postinst triggered /usr/share/man
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  Signal: 5
  SourcePackage: debconf
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_node_copy_deep () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? ()
   g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: frontend crashed with signal 5 in g_node_copy_deep()
  UpgradeStatus: Upgraded to quantal on 2012-10-02 (0 days ago)
  UserGroups:

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