[Bug 994056] Re: python2.7 crashed with SIGSEGV in QWidget::~QWidget()

[Scott Kitterman]

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Title:
  python2.7 crashed with SIGSEGV in QWidget::~QWidget()

Status in “python2.7” package in Ubuntu:
  New
Status in “python2.7” package in Debian:
  Unknown

Bug description:
  Crashed running examples/graphicsview/anchorlayout.py from python-
  qt4-doc as python anchorlayout.py.  If the demo is running from within
  examples/demos/qtdemo/qtdemo.py there is no crash.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: python2.7-minimal 2.7.3-0ubuntu3
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
  Uname: Linux 3.2.0-24-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  Date: Thu May  3 11:30:38 2012
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/python2.7
  InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
  ProcCmdline: python anchorlayout.py
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm
   LANG=en_US.UTF-8
   LANGUAGE=
  SegvAnalysis:
   Segfault happened at: 0xb58a12c8 <QWidget::~QWidget()+920>:	mov    0x4(%eax),%eax
   PC (0xb58a12c8) ok
   source "0x4(%eax)" (0x00000004) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: python2.7
  StacktraceTop:
   QWidget::~QWidget (this=0x9fc7598, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1629
   QAbstractButton::~QAbstractButton (this=0x9fc7598, __in_chrg=<optimized out>) at widgets/qabstractbutton.cpp:599
   QPushButton::~QPushButton (this=0x9fc7598, __in_chrg=<optimized out>) at widgets/qpushbutton.cpp:295
   sipQPushButton::~sipQPushButton (this=0x9fc7598, __in_chrg=<optimized out>) at sipQtGuipart9.cpp:22677
   sipQPushButton::~sipQPushButton (this=0x9fc7598, __in_chrg=<optimized out>) at sipQtGuipart9.cpp:22680
  Title: python2.7 crashed with SIGSEGV in QWidget::~QWidget()
  UpgradeStatus: Upgraded to precise on 2012-04-09 (24 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare syslog wireshark

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