[Qt-creator] Crash when hitting Ctrl-Z with latest git

[Abdelrazak Younes]

Here is the backtrace:

(gdb) bt
#0  0x00007ffff58b9d01 in ?? () from /lib/libc.so.6
#1  0x00007ffff58bba20 in ?? () from /lib/libc.so.6
#2  0x00007ffff704c357 in QPainterPath::toFillPolygon(QTransform const&) 
const () from /usr/lib/libQtGui.so.4
#3  0x00007ffff704c442 in QPainterPath::toFillPolygon(QMatrix const&) 
const () from /usr/lib/libQtGui.so.4
#4  0x00007ffff70e5c28 in ?? () from /usr/lib/libQtGui.so.4
#5  0x00007ffff70322e3 in ?? () from /usr/lib/libQtGui.so.4
#6  0x00007ffff70323c2 in ?? () from /usr/lib/libQtGui.so.4
#7  0x00007ffff70378e9 in QPainter::setClipPath(QPainterPath const&, 
Qt::ClipOperation) () from /usr/lib/libQtGui.so.4
#8  0x00007ffff714603a in QTextLayout::draw(QPainter*, QPointF const&, 
QVector<QTextLayout::FormatRange> const&, QRectF const&) const () from 
/usr/lib/libQtGui.so.4
#9  0x00007fffe719b52e in 
TextEditor::BaseTextEditor::paintEvent(QPaintEvent*) () from 
/home/younes/devel/qt/qt-creator-build2/lib/qtcreator/plugins/Nokia/libTextEditor.so
#10 0x00007ffff6f37175 in QWidget::event(QEvent*) () from 
/usr/lib/libQtGui.so.4
#11 0x00007ffff72dae16 in QFrame::event(QEvent*) () from 
/usr/lib/libQtGui.so.4
#12 0x00007fffe718c6d6 in 
TextEditor::BaseTextEditor::viewportEvent(QEvent*) () from 
/home/younes/devel/qt/qt-creator-build2/lib/qtcreator/plugins/Nokia/libTextEditor.so
#13 0x00007ffff66e6467 in 
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, 
QEvent*) () from /usr/lib/libQtCore.so.4
#14 0x00007ffff6ee1e5c in QApplicationPrivate::notify_helper(QObject*, 
QEvent*) () from /usr/lib/libQtGui.so.4
#15 0x00007ffff6ee848d in QApplication::notify(QObject*, QEvent*) () 
from /usr/lib/libQtGui.so.4
#16 0x00007ffff66e704c in QCoreApplication::notifyInternal(QObject*, 
QEvent*) () from /usr/lib/libQtCore.so.4
#17 0x00007ffff6f3f72d in QWidgetPrivate::drawWidget(QPaintDevice*, 
QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () 
from /usr/lib/libQtGui.so.4
#18 0x00007ffff70f5e76 in ?? () from /usr/lib/libQtGui.so.4
#19 0x00007ffff6f30b60 in QWidgetPrivate::syncBackingStore() () from 
/usr/lib/libQtGui.so.4
#20 0x00007ffff6f37885 in QWidget::event(QEvent*) () from 
/usr/lib/libQtGui.so.4
#21 0x00007ffff72f5c9b in QMainWindow::event(QEvent*) () from 
/usr/lib/libQtGui.so.4
#22 0x00007ffff6ee1e8c in QApplicationPrivate::notify_helper(QObject*, 
QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007ffff6ee848d in QApplication::notify(QObject*, QEvent*) () 
from /usr/lib/libQtGui.so.4
#24 0x00007ffff66e704c in QCoreApplication::notifyInternal(QObject*, 
QEvent*) () from /usr/lib/libQtCore.so.4
#25 0x00007ffff66e97c7 in 
QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) 
() from /usr/lib/libQtCore.so.4
#26 0x00007ffff6710ae3 in ?? () from /usr/lib/libQtCore.so.4
#27 0x00007ffff4f69bce in g_main_context_dispatch () from 
/lib/libglib-2.0.so.0
#28 0x00007ffff4f6d598 in ?? () from /lib/libglib-2.0.so.0
#29 0x00007ffff4f6d6c0 in g_main_context_iteration () from 
/lib/libglib-2.0.so.0
#30 0x00007ffff6710623 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
() from /usr/lib/libQtCore.so.4
#31 0x00007ffff6f902fe in ?? () from /usr/lib/libQtGui.so.4
#32 0x00007ffff66e5972 in 
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/usr/lib/libQtCore.so.4
#33 0x00007ffff66e5d4c in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/usr/lib/libQtCore.so.4
#34 0x00007ffff66e9a8b in QCoreApplication::exec() () from 
/usr/lib/libQtCore.so.4
#35 0x000000000040a2ae in main ()