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  1. Qt Creator
  2. QTCREATORBUG-14888

Segfault when maximizing/minimizing Qt Creator

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Not Evaluated Not Evaluated
    • None
    • Qt Creator 3.4.2
    • All Other Issues
    • None
    • Windows 10 x64
      Qt Creator from msys2 (mingw-w64 x86_64) Based on Qt 5.5.0 (GCC 5.1.0, 64 bit)

      There are different ways to reproduce this bug, this seems to be the most simple.

      1. Open a project and a source file
      3. Try to minimize/maximize the window a few times
      4. Segmentation fault

      I attached the full backtrace (gdb.txt). Here is main thread where segfault occurs:

      #0  0x0000000001438560 in QRasterPaintEngine::penChanged() ()
   from e:\msys64\mingw64\bin\Qt5Gui.dll
#1  0x000000000144c9e7 in QPainter::setPen(QColor const&) ()
   from e:\msys64\mingw64\bin\Qt5Gui.dll
#2  0x0000000000d8aaa3 in QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#3  0x0000000000de6b0d in QProxyStyle::layoutSpacing(QSizePolicy::ControlType, QSizePolicy::ControlType, Qt::Orientation, QStyleOption const*, QWidget const*) const () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#4  0x0000000000dda02d in QProxyStyle::layoutSpacing(QSizePolicy::ControlType, QSizePolicy::ControlType, Qt::Orientation, QStyleOption const*, QWidget const*) const () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#5  0x0000000000dca913 in QProxyStyle::layoutSpacing(QSizePolicy::ControlType, QSizePolicy::ControlType, Qt::Orientation, QStyleOption const*, QWidget const*) const () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#6  0x000000006d8b2d1b in ManhattanStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const ()
   from E:\msys64\mingw64\lib\qtcreator\plugins\Core.dll
#7  0x0000000000fbda54 in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#8  0x0000000000f67e8c in QListView::paintEvent(QPaintEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#9  0x0000000000d5b2e8 in QWidget::event(QEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#10 0x0000000000e431be in QFrame::event(QEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#11 0x0000000000f50351 in QAbstractItemView::viewportEvent(QEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#12 0x00000000668ca1b0 in QCoreApplicationPrivate::createEventDispatcher() ()
   from e:\msys64\mingw64\bin\Qt5Core.dll
#13 0x0000000000d1aa58 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#14 0x0000000000d1fcf0 in QApplication::notify(QObject*, QEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#15 0x00000000668caaac in QCoreApplication::notifyInternal(QObject*, QEvent*)
    () from e:\msys64\mingw64\bin\Qt5Core.dll
#16 0x0000000000d539fc in QWidgetPrivate::sendPaintEvent(QRegion const&) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#17 0x0000000000d53f3d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#18 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#19 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#20 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#21 0x0000000000d54bba in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#22 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#23 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#24 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#25 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#26 0x0000000000d54bba in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#27 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#28 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#29 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#30 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#31 0x0000000000d54bba in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#32 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#33 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#34 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#35 0x0000000000d54cc6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#36 0x0000000000d54bba in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#37 0x0000000000d53b65 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#38 0x0000000000d269a7 in QWidgetPrivate::repaint_sys(QRegion const&) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#39 0x0000000000d26b85 in QWidgetPrivate::repaint_sys(QRegion const&) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#40 0x0000000000d431d4 in QWidgetPrivate::syncBackingStore() ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#41 0x0000000000d71e80 in QDesktopWidget::qt_metacall(QMetaObject::Call, int, void**) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#42 0x0000000000d74c80 in QDesktopWidget::qt_metacall(QMetaObject::Call, int, void**) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#43 0x0000000000d1aa7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from e:\msys64\mingw64\bin\Qt5Widgets.dll
#44 0x0000000000d1fcf0 in QApplication::notify(QObject*, QEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Widgets.dll
#45 0x00000000668caaac in QCoreApplication::notifyInternal(QObject*, QEvent*)
    () from e:\msys64\mingw64\bin\Qt5Core.dll
#46 0x00000000012bd89e in QGuiApplicationPrivate::processGeometryChangeEvent(QWindowSystemInterfacePrivate::GeometryChangeEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Gui.dll
#47 0x00000000012c29a5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) ()
   from e:\msys64\mingw64\bin\Qt5Gui.dll
#48 0x00000000012adb27 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from e:\msys64\mingw64\bin\Qt5Gui.dll
#49 0x0000000066913c27 in QEventDispatcherWin32Private::sendTimerEvent(int) ()
   from e:\msys64\mingw64\bin\Qt5Core.dll
#50 0x00007ffee70600dc in USER32!DispatchMessageW ()
   from C:\Windows\system32\user32.dll
#51 0x00007ffee705fc07 in USER32!DispatchMessageW ()
   from C:\Windows\system32\user32.dll
#52 0x0000000066913594 in QEventDispatcherWin32::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from e:\msys64\mingw64\bin\Qt5Core.dll
#53 0x000000006dce5ebf in ?? ()
   from E:\msys64\mingw64\share\qt5\plugins\platforms\qwindows.dll
#54 0x00000000668c9ce1 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from e:\msys64\mingw64\bin\Qt5Core.dll
#55 0x00000000668cffd7 in QCoreApplication::exec() ()
   from e:\msys64\mingw64\bin\Qt5Core.dll
#56 0x00000000004080e2 in ?? ()
#57 0x000000000040a226 in ?? ()
#58 0x00000000004013ed in ?? ()
#59 0x00000000004014fb in ?? ()
#60 0x00007ffee6b82d92 in KERNEL32!BaseThreadInitThunk ()
   from C:\Windows\system32\kernel32.dll
#61 0x00007ffee8fc9f64 in ntdll!RtlUserThreadStart ()
   from C:\Windows\SYSTEM32\ntdll.dll
#62 0x0000000000000000 in ?? ()
      • FIle system view
      • Happens with all styles
      • Unrelated to WelcomeScreen/QQuickWidget
      • Happens only with source file, not for plain text (seems to involve 2 item views)

        1. gdb.txt
          46 kB
          Nazar Mishturak
        2. penChanged_crash.png
          228 kB
          Tim Jenssen
        3. penChanged_crash.txt
          887 kB
          Tim Jenssen
        4. qtcreatorbug14888_diag.diff
          31 kB
          Friedemann Kleint
        5. qtcreatorbug14888_log.txt
          8 kB
          Friedemann Kleint
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            kkohne Kai Köhne
            nazar554 Nazar Mishturak
            Votes:
            1 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes