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[Bug 1273306] Re: python3.3 crashed with SIGSEGV in QWidget::destroy()

To: dx-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1273306@xxxxxxxxxxxxxxxxxx>
Date: Mon, 10 Mar 2014 09:40:21 -0000
Reply-to: Bug 1273306 <1273306@xxxxxxxxxxxxxxxxxx>
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** Branch linked: lp:~kubuntu-packagers/kubuntu-packaging/qtbase-
opensource-src

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https://bugs.launchpad.net/bugs/1273306

Title:
  python3.3 crashed with SIGSEGV in QWidget::destroy()

Status in Window Mocker:
  New
Status in “appmenu-qt” package in Ubuntu:
  Invalid
Status in “qtbase-opensource-src” package in Ubuntu:
  Fix Released

Bug description:
  This happens when trying to run window-mocker with python3:

  $ bzr branch lp:~coreygoldberg/window-mocker/py3
  $ cd py3
  $ PYTHONPATH=. python3 bin/window-mocker -t Qt5

  When merely closing the window it cleanly exits for me; but when
  resizing the window I get this crash.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: python3.3-minimal 3.3.3-6
  ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
  Uname: Linux 3.13.0-5-generic x86_64
  ApportVersion: 2.13.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Jan 27 17:23:52 2014
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/python3.3
  ExecutableTimestamp: 1389422324
  InstallationDate: Installed on 2013-10-14 (105 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131013)
  ProcCmdline: python3 bin/window-mocker -t Qt5
  ProcCwd: /home/martin/ubuntu/tmp/py3
  SegvAnalysis:
   Segfault happened at: 0x7ff6f44b994d <_ZN7QWidget7destroyEbb+637>:	mov    0x8(%rax),%rdi
   PC (0x7ff6f44b994d) ok
   source "0x8(%rax)" (0x00000008) not located in a known VMA region (needed readable region)!
   destination "%rdi" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: python3.3
  StacktraceTop:
   QWidget::destroy (this=this@entry=0x239d360, destroyWindow=destroyWindow@entry=true, destroySubWindows=destroySubWindows@entry=true) at kernel/qwidget_qpa.cpp:172
   QWidget::~QWidget (this=0x239d360, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1478
   QMenu::~QMenu (this=0x239d360, __in_chrg=<optimized out>) at widgets/qmenu.cpp:1362
   MenuBarAdapter::~MenuBarAdapter() () from /tmp/apport_sandbox_qceHPQ/usr/lib/x86_64-linux-gnu/qt5/plugins/menubar/libappmenu-qt.so
   AppMenuPlatformMenuBar::destroyMenuBar() () from /tmp/apport_sandbox_qceHPQ/usr/lib/x86_64-linux-gnu/qt5/plugins/menubar/libappmenu-qt.so
  Title: python3.3 crashed with SIGSEGV in QWidget::destroy()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sbuild sudo

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