[Bug 1044258] Stacktrace.txt

[Apport retracing service]

** Attachment added: "Stacktrace.txt"
   https://bugs.launchpad.net/bugs/1044258/+attachment/3285287/+files/Stacktrace.txt

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Title:
  apt-get crashed with SIGSEGV in ParentPkg()

Status in “apt” package in Ubuntu:
  New

Bug description:
  apt-get crashed when I tried to pin some packages from quantal on a
  precise system.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: apt 0.8.16~exp12ubuntu10.3
  ProcVersionSignature: Ubuntu 3.2.0-30.47-generic 3.2.27
  Uname: Linux 3.2.0-30-generic i686
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: i386
  Date: Fri Aug 31 12:36:38 2012
  ExecutablePath: /usr/bin/apt-get
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  ProcCmdline: apt-get install libgtk-3-0/quantal libglib2.0-0/quantal
  SegvAnalysis:
   Segfault happened at: 0x8066f4d:	mov    0x1c(%eax),%eax
   PC (0x08066f4d) ok
   source "0x1c(%eax)" (0x6462321c) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: apt
  StacktraceTop:
   ?? ()
   ?? ()
   CommandLine::DispatchArg(CommandLine::Dispatch*, bool) () from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
   ?? ()
   __libc_start_main (main=0x804fa90, argc=4, ubp_av=0xbf8a2654, init=0x806b2c0, fini=0x806b330, rtld_fini=0x8df270 <_dl_fini>, stack_end=0xbf8a264c) at libc-start.c:226
  Title: apt-get crashed with SIGSEGV in CommandLine::DispatchArg()
  UpgradeStatus: Upgraded to precise on 2012-02-09 (203 days ago)
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