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Details

Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 5.15.2, 6.0.0 Beta2
Affects Version/s: 5.10.1, 5.12.3, 5.15.1
Component/s: Charts
Labels:
None
Environment:
Ubuntu 18.04 amd64
Windows 10 x64

Platform/s:

Linux/X11, Windows
Story Points:
2
Commits:
e71430cd2b82cda52a2886c941b227eb6cdbcb7a

Description

An attempt to zoom out a chart with a logarithmic axis too many times leads to crash. Namely, if you maximize the window of the following program on a FullHD screen, and then right-click the chart 9 or 10 times to zoom out, you'll get a segfault due to stack overflow on the final click.

#include <QtCharts>
#include <QApplication>

int main(int argc, char** argv)
{
	QApplication a(argc,argv);

	QChartView view;
	view.setRubberBand(QChartView::RectangleRubberBand);

	const auto series=new QLineSeries;
	for(int i=1;i<100;++i)
		series->append(i,i);
	view.chart()->addSeries(series);

	const auto axisY=new QLogValueAxis;
	axisY->setBase(10);
	view.chart()->addAxis(axisY, Qt::AlignLeft);

	series->attachAxis(axisY);

	view.show();

	return a.exec();
}

The backtrace looks like follows:

#0  0x00007ffff72d645f in QString::reallocData(unsigned int, bool) () at /opt/qt512/lib/libQt5Core.so.5
#1  0x00007ffff645f978 in QTextBlock::text() const () at /opt/qt512/lib/libQt5Gui.so.5
#2  0x00007ffff643634c in QTextEngine::validate() const () at /opt/qt512/lib/libQt5Gui.so.5
#3  0x00007ffff643d461 in QTextEngine::itemize() const () at /opt/qt512/lib/libQt5Gui.so.5
#4  0x00007ffff644773c in QTextLayout::beginLayout() () at /opt/qt512/lib/libQt5Gui.so.5
#5  0x00007ffff649307d in  () at /opt/qt512/lib/libQt5Gui.so.5
#6  0x00007ffff6494594 in  () at /opt/qt512/lib/libQt5Gui.so.5
#7  0x00007ffff649a402 in  () at /opt/qt512/lib/libQt5Gui.so.5
#8  0x00007ffff649aa09 in  () at /opt/qt512/lib/libQt5Gui.so.5
#9  0x00007ffff649ac78 in QTextDocumentLayout::doLayout(int, int, int) () at /opt/qt512/lib/libQt5Gui.so.5
#10 0x00007ffff649bbd3 in QTextDocumentLayout::documentChanged(int, int, int) () at /opt/qt512/lib/libQt5Gui.so.5
#11 0x00007ffff6479400 in QTextDocumentPrivate::clear() () at /opt/qt512/lib/libQt5Gui.so.5
#12 0x00007ffff6467aea in QTextDocument::setHtml(QString const&) () at /opt/qt512/lib/libQt5Gui.so.5
#13 0x00007ffff7a9fa80 in  () at /opt/qt512/lib/libQt5Widgets.so.5
#14 0x00007ffff7eda497 in QtCharts::ChartPresenter::textBoundingRect(QFont const&, QString const&, double) () at /opt/qt512/lib/libQt5Charts.so.5
#15 0x00007ffff7f190d3 in QtCharts::ChartLogValueAxisY::sizeHint(Qt::SizeHint, QSizeF const&) const () at /opt/qt512/lib/libQt5Charts.so.5
#16 0x00007ffff7bbe173 in  () at /opt/qt512/lib/libQt5Widgets.so.5
#17 0x00007ffff7bbe940 in QGraphicsLayoutItem::effectiveSizeHint(Qt::SizeHint, QSizeF const&) const () at /opt/qt512/lib/libQt5Widgets.so.5
#18 0x00007ffff7f7b620 in QtCharts::CartesianChartLayout::calculateAxisGeometry(QRectF const&, QList<QtCharts::ChartAxisElement*> const&, bool) const () at /opt/qt512/lib/libQt5Charts.so.5
#19 0x00007ffff7f7af13 in QtCharts::AbstractChartLayout::setGeometry(QRectF const&) () at /opt/qt512/lib/libQt5Charts.so.5
#20 0x00007ffff7efd777 in QtCharts::ChartAxisElement::handleRangeChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#21 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#22 0x00007ffff7f0288d in QtCharts::QAbstractAxisPrivate::rangeChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#23 0x00007ffff7f19d03 in QtCharts::QLogValueAxisPrivate::setRange(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#24 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#25 0x00007ffff7f26a00 in QtCharts::AbstractDomain::rangeVerticalChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#26 0x00007ffff7f29f5a in QtCharts::XLogYDomain::setRange(double, double, double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#27 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#28 0x00007ffff7f0288d in QtCharts::QAbstractAxisPrivate::rangeChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#29 0x00007ffff7f19d03 in QtCharts::QLogValueAxisPrivate::setRange(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#30 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#31 0x00007ffff7f26a00 in QtCharts::AbstractDomain::rangeVerticalChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#32 0x00007ffff7f29f5a in QtCharts::XLogYDomain::setRange(double, double, double, double) () at /opt/qt512/lib/libQt5Charts.so.5


... (lots of repetitions of the six calls) ...

#66685 0x00007ffff7f26a00 in QtCharts::AbstractDomain::rangeVerticalChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#66686 0x00007ffff7f29f5a in QtCharts::XLogYDomain::setRange(double, double, double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#66687 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#66688 0x00007ffff7f0288d in QtCharts::QAbstractAxisPrivate::rangeChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#66689 0x00007ffff7f19d03 in QtCharts::QLogValueAxisPrivate::setRange(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#66690 0x00007ffff7466a45 in QMetaObject::activate(QObject*, int, int, void**) () at /opt/qt512/lib/libQt5Core.so.5
#66691 0x00007ffff7f26a00 in QtCharts::AbstractDomain::rangeVerticalChanged(double, double) () at /opt/qt512/lib/libQt5Charts.so.5
#66692 0x00007ffff7ed49da in QtCharts::ChartDataSet::zoomOutDomain(QRectF const&) () at /opt/qt512/lib/libQt5Charts.so.5
#66693 0x00007ffff7ee1995 in QtCharts::QChartPrivate::zoomOut(double) () at /opt/qt512/lib/libQt5Charts.so.5
#66694 0x00007ffff7ee3448 in QtCharts::QChartView::mouseReleaseEvent(QMouseEvent*) () at /opt/qt512/lib/libQt5Charts.so.5
#66695 0x00007ffff7904fd8 in QWidget::event(QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66696 0x00007ffff79a7c9e in QFrame::event(QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66697 0x00007ffff7bfc6b3 in QGraphicsView::viewportEvent(QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66698 0x00007ffff7436c5d in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Core.so.5
#66699 0x00007ffff78c4c35 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66700 0x00007ffff78cd058 in QApplication::notify(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66701 0x00007ffff7436ed8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Core.so.5
#66702 0x00007ffff78cb65f in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /opt/qt512/lib/libQt5Widgets.so.5
#66703 0x00007ffff791fec1 in  () at /opt/qt512/lib/libQt5Widgets.so.5
#66704 0x00007ffff7922b5a in  () at /opt/qt512/lib/libQt5Widgets.so.5
#66705 0x00007ffff78c4c5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66706 0x00007ffff78cc190 in QApplication::notify(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Widgets.so.5
#66707 0x00007ffff7436ed8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /opt/qt512/lib/libQt5Core.so.5
#66708 0x00007ffff634a8fb in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /opt/qt512/lib/libQt5Gui.so.5
#66709 0x00007ffff634ba65 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /opt/qt512/lib/libQt5Gui.so.5
#66710 0x00007ffff63242bb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /opt/qt512/lib/libQt5Gui.so.5
#66711 0x00007ffff03ada6a in  () at /opt/qt512/plugins/platforms/../../lib/libQt5XcbQpa.so.5
#66712 0x00007ffff4d3b387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#66713 0x00007ffff4d3b5c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#66714 0x00007ffff4d3b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#66715 0x00007ffff7493f7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /opt/qt512/lib/libQt5Core.so.5
#66716 0x00007ffff74351fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /opt/qt512/lib/libQt5Core.so.5
#66717 0x00007ffff743e330 in QCoreApplication::exec() () at /opt/qt512/lib/libQt5Core.so.5
#66718 0x00005555555551a3 in main(int, char**) (argc=1, argv=0x7fffffffdcf8) at test.cpp:24