Bug report #16470
Updated by Mathieu Pellerin - nIRV almost 7 years ago
Subject says it all.
*Steps to reproduce*
# Open attached crash.qgs project
# Open style dock, select the single vector layer in the project
# Go to the label section in the style dock, and click on the label with's [ E ] expression button
# *boom* crash
*gdb where output*
<pre>
#0 0x0000000000000000 in ()
#1 0x00007ffff574986b in QgsDefaultVectorLayerLegend::createLayerTreeModelLegendNodes(QgsLayerTreeLayer*) (this=0x555558726070, nodeLayer=0x555558889f00)
at /home/webmaster/dev/cpp/QGIS/src/core/qgsmaplayerlegend.cpp:202
#2 0x00007ffff55352a6 in QgsLayerTreeModel::addLegendToLayer(QgsLayerTreeLayer*) (this=0x5555565b24f0, nodeL=0x555558889f00) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:1202
#3 0x00007ffff55310f3 in QgsLayerTreeModel::refreshLayerLegend(QgsLayerTreeLayer*) (this=0x5555565b24f0, nodeLayer=0x555558889f00) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:533
#4 0x00007ffff55327a0 in QgsLayerTreeModel::layerLegendChanged() (this=0x5555565b24f0) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:803
#5 0x00007ffff55400e2 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsLayerTreeModel::*)()>::call(void (QgsLayerTreeModel::*)(), QgsLayerTreeModel*, void**) (f=(void (QgsLayerTreeModel::*)(QgsLayerTreeModel * const)) 0x7ffff55326f2 <QgsLayerTreeModel::layerLegendChanged()>, o=0x5555565b24f0, arg=0x7fffffffb230) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#6 0x00007ffff553f303 in QtPrivate::FunctionPointer<void (QgsLayerTreeModel::*)()>::call<QtPrivate::List<>, void>(void (QgsLayerTreeModel::*)(), QgsLayerTreeModel*, void**) (f=(void (QgsLayerTreeModel::*)(QgsLayerTreeModel * const)) 0x7ffff55326f2 <QgsLayerTreeModel::layerLegendChanged()>, o=0x5555565b24f0, arg=0x7fffffffb230) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#7 0x00007ffff553d8f7 in QtPrivate::QSlotObject<void (QgsLayerTreeModel::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558cba4d0, r=0x5555565b24f0, a=0x7fffffffb230, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#8 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007ffff5c18075 in QgsMapLayer::legendChanged() (this=0x55555879f4c0) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayer.cpp:430
#10 0x00007ffff5747ede in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsMapLayer::*)()>::call(void (QgsMapLayer::*)(), QgsMapLayer*, void**) (f=(void (QgsMapLayer::*)(QgsMapLayer * const)) 0x7ffff5c1804c <QgsMapLayer::legendChanged()>, o=0x55555879f4c0, arg=0x7fffffffb410) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#11 0x00007ffff5747bda in QtPrivate::FunctionPointer<void (QgsMapLayer::*)()>::call<QtPrivate::List<>, void>(void (QgsMapLayer::*)(), QgsMapLayer*, void**) (f=(void (QgsMapLayer::*)(QgsMapLayer * const)) 0x7ffff5c1804c <QgsMapLayer::legendChanged()>, o=0x55555879f4c0, arg=0x7fffffffb410) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#12 0x00007ffff5747403 in QtPrivate::QSlotObject<void (QgsMapLayer::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558c47500, r=0x55555879f4c0, a=0x7fffffffb410, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#13 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ffff5c185f9 in QgsMapLayerLegend::itemsChanged() (this=0x555558726070) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayerlegend.cpp:125
#15 0x00007ffff574ae27 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsMapLayerLegend::*)()>::call(void (QgsMapLayerLegend::*)(), QgsMapLayerLegend*, void**) (f=(void (QgsMapLayerLegend::*)(QgsMapLayerLegend * const)) 0x7ffff5c185d0 <QgsMapLayerLegend::itemsChanged()>, o=0x555558726070, arg=0x7fffffffb5f0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#16 0x00007ffff574adaa in QtPrivate::FunctionPointer<void (QgsMapLayerLegend::*)()>::call<QtPrivate::List<>, void>(void (QgsMapLayerLegend::*)(), QgsMapLayerLegend*, void**) (f=(void (QgsMapLayerLegend::*)(QgsMapLayerLegend * const)) 0x7ffff5c185d0 <QgsMapLayerLegend::itemsChanged()>, o=0x555558726070, arg=0x7fffffffb5f0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#17 0x00007ffff574ac93 in QtPrivate::QSlotObject<void (QgsMapLayerLegend::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558c47220, r=0x555558726070, a=0x7fffffffb5f0, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#18 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ffff5c1801d in QgsMapLayer::rendererChanged() (this=0x55555879f4c0) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayer.cpp:418
#20 0x00007ffff590f7d9 in QgsVectorLayer::setRenderer(QgsFeatureRenderer*) (this=0x55555879f4c0, r=0x55555aaa2d20) at /home/webmaster/dev/cpp/QGIS/src/core/qgsvectorlayer.cpp:2721
#21 0x00007ffff5908ca3 in QgsVectorLayer::readStyle(QDomNode const&, QString&) (this=0x55555879f4c0, node=..., errorMessage=...) at /home/webmaster/dev/cpp/QGIS/src/core/qgsvectorlayer.cpp:1856
#22 0x00007ffff73fa8e7 in QgsMapLayerStyleCommand::redo() (this=0x55555aaaa260) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:524
#23 0x00007ffff4da83e8 in QUndoStack::push(QUndoCommand*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007ffff73fa612 in QgsLayerStylingWidget::pushUndoItem(QString const&) (this=0x5555566f0f60, name=...) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:499
#25 0x00007ffff73f919a in QgsLayerStylingWidget::apply() (this=0x5555566f0f60) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:265
#26 0x00007ffff73ff0c5 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsLayerStylingWidget::*)()>::call(void (QgsLayerStylingWidget::*)(), QgsLayerStylingWidget*, void**) (f=(void (QgsLayerStylingWidget::*)(QgsLayerStylingWidget * const)) 0x7ffff73f8e12 <QgsLayerStylingWidget::apply()>, o=0x5555566f0f60, arg=0x7fffffffbaa0)
at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#27 0x00007ffff73fee06 in QtPrivate::FunctionPointer<void (QgsLayerStylingWidget::*)()>::call<QtPrivate::List<>, void>(void (QgsLayerStylingWidget::*)(), QgsLayerStylingWidget*, void**) (f=(void (QgsLayerStylingWidget::*)(QgsLayerStylingWidget * const)) 0x7ffff73f8e12 <QgsLayerStylingWidget::apply()>, o=0x5555566f0f60, arg=0x7fffffffbaa0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#28 0x00007ffff73fe9e3 in QtPrivate::QSlotObject<void (QgsLayerStylingWidget::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555556711730, r=0x5555566f0f60, a=0x7fffffffbaa0, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#29 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ffff3d96e38 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007ffff3d8b313 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007ffff4a3635c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007ffff4a3db11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007ffff55b1a89 in QgsApplication::notify(QObject*, QEvent*) (this=0x7fffffffda00, receiver=0x555556707bc0, event=0x7fffffffbe50) at /home/webmaster/dev/cpp/QGIS/src/core/qgsapplication.cpp:295
#35 0x00007ffff3d5e8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007ffff3db1eae in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007ffff3db2409 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fffea4af377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fffea4af5e0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fffea4af68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ffff3db2f0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007ffff3d5c88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
</pre>
*Steps to reproduce*
# Open attached crash.qgs project
# Open style dock, select the single vector layer in the project
# Go to the label section in the style dock, and click on the label with's [ E ] expression button
# *boom* crash
*gdb where output*
<pre>
#0 0x0000000000000000 in ()
#1 0x00007ffff574986b in QgsDefaultVectorLayerLegend::createLayerTreeModelLegendNodes(QgsLayerTreeLayer*) (this=0x555558726070, nodeLayer=0x555558889f00)
at /home/webmaster/dev/cpp/QGIS/src/core/qgsmaplayerlegend.cpp:202
#2 0x00007ffff55352a6 in QgsLayerTreeModel::addLegendToLayer(QgsLayerTreeLayer*) (this=0x5555565b24f0, nodeL=0x555558889f00) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:1202
#3 0x00007ffff55310f3 in QgsLayerTreeModel::refreshLayerLegend(QgsLayerTreeLayer*) (this=0x5555565b24f0, nodeLayer=0x555558889f00) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:533
#4 0x00007ffff55327a0 in QgsLayerTreeModel::layerLegendChanged() (this=0x5555565b24f0) at /home/webmaster/dev/cpp/QGIS/src/core/layertree/qgslayertreemodel.cpp:803
#5 0x00007ffff55400e2 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsLayerTreeModel::*)()>::call(void (QgsLayerTreeModel::*)(), QgsLayerTreeModel*, void**) (f=(void (QgsLayerTreeModel::*)(QgsLayerTreeModel * const)) 0x7ffff55326f2 <QgsLayerTreeModel::layerLegendChanged()>, o=0x5555565b24f0, arg=0x7fffffffb230) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#6 0x00007ffff553f303 in QtPrivate::FunctionPointer<void (QgsLayerTreeModel::*)()>::call<QtPrivate::List<>, void>(void (QgsLayerTreeModel::*)(), QgsLayerTreeModel*, void**) (f=(void (QgsLayerTreeModel::*)(QgsLayerTreeModel * const)) 0x7ffff55326f2 <QgsLayerTreeModel::layerLegendChanged()>, o=0x5555565b24f0, arg=0x7fffffffb230) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#7 0x00007ffff553d8f7 in QtPrivate::QSlotObject<void (QgsLayerTreeModel::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558cba4d0, r=0x5555565b24f0, a=0x7fffffffb230, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#8 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007ffff5c18075 in QgsMapLayer::legendChanged() (this=0x55555879f4c0) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayer.cpp:430
#10 0x00007ffff5747ede in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsMapLayer::*)()>::call(void (QgsMapLayer::*)(), QgsMapLayer*, void**) (f=(void (QgsMapLayer::*)(QgsMapLayer * const)) 0x7ffff5c1804c <QgsMapLayer::legendChanged()>, o=0x55555879f4c0, arg=0x7fffffffb410) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#11 0x00007ffff5747bda in QtPrivate::FunctionPointer<void (QgsMapLayer::*)()>::call<QtPrivate::List<>, void>(void (QgsMapLayer::*)(), QgsMapLayer*, void**) (f=(void (QgsMapLayer::*)(QgsMapLayer * const)) 0x7ffff5c1804c <QgsMapLayer::legendChanged()>, o=0x55555879f4c0, arg=0x7fffffffb410) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#12 0x00007ffff5747403 in QtPrivate::QSlotObject<void (QgsMapLayer::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558c47500, r=0x55555879f4c0, a=0x7fffffffb410, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#13 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ffff5c185f9 in QgsMapLayerLegend::itemsChanged() (this=0x555558726070) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayerlegend.cpp:125
#15 0x00007ffff574ae27 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsMapLayerLegend::*)()>::call(void (QgsMapLayerLegend::*)(), QgsMapLayerLegend*, void**) (f=(void (QgsMapLayerLegend::*)(QgsMapLayerLegend * const)) 0x7ffff5c185d0 <QgsMapLayerLegend::itemsChanged()>, o=0x555558726070, arg=0x7fffffffb5f0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#16 0x00007ffff574adaa in QtPrivate::FunctionPointer<void (QgsMapLayerLegend::*)()>::call<QtPrivate::List<>, void>(void (QgsMapLayerLegend::*)(), QgsMapLayerLegend*, void**) (f=(void (QgsMapLayerLegend::*)(QgsMapLayerLegend * const)) 0x7ffff5c185d0 <QgsMapLayerLegend::itemsChanged()>, o=0x555558726070, arg=0x7fffffffb5f0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#17 0x00007ffff574ac93 in QtPrivate::QSlotObject<void (QgsMapLayerLegend::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555558c47220, r=0x555558726070, a=0x7fffffffb5f0, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#18 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ffff5c1801d in QgsMapLayer::rendererChanged() (this=0x55555879f4c0) at /home/webmaster/dev/cpp/QGIS/bm-qt5/src/core/moc_qgsmaplayer.cpp:418
#20 0x00007ffff590f7d9 in QgsVectorLayer::setRenderer(QgsFeatureRenderer*) (this=0x55555879f4c0, r=0x55555aaa2d20) at /home/webmaster/dev/cpp/QGIS/src/core/qgsvectorlayer.cpp:2721
#21 0x00007ffff5908ca3 in QgsVectorLayer::readStyle(QDomNode const&, QString&) (this=0x55555879f4c0, node=..., errorMessage=...) at /home/webmaster/dev/cpp/QGIS/src/core/qgsvectorlayer.cpp:1856
#22 0x00007ffff73fa8e7 in QgsMapLayerStyleCommand::redo() (this=0x55555aaaa260) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:524
#23 0x00007ffff4da83e8 in QUndoStack::push(QUndoCommand*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007ffff73fa612 in QgsLayerStylingWidget::pushUndoItem(QString const&) (this=0x5555566f0f60, name=...) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:499
#25 0x00007ffff73f919a in QgsLayerStylingWidget::apply() (this=0x5555566f0f60) at /home/webmaster/dev/cpp/QGIS/src/app/qgslayerstylingwidget.cpp:265
#26 0x00007ffff73ff0c5 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsLayerStylingWidget::*)()>::call(void (QgsLayerStylingWidget::*)(), QgsLayerStylingWidget*, void**) (f=(void (QgsLayerStylingWidget::*)(QgsLayerStylingWidget * const)) 0x7ffff73f8e12 <QgsLayerStylingWidget::apply()>, o=0x5555566f0f60, arg=0x7fffffffbaa0)
at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:141
#27 0x00007ffff73fee06 in QtPrivate::FunctionPointer<void (QgsLayerStylingWidget::*)()>::call<QtPrivate::List<>, void>(void (QgsLayerStylingWidget::*)(), QgsLayerStylingWidget*, void**) (f=(void (QgsLayerStylingWidget::*)(QgsLayerStylingWidget * const)) 0x7ffff73f8e12 <QgsLayerStylingWidget::apply()>, o=0x5555566f0f60, arg=0x7fffffffbaa0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160
#28 0x00007ffff73fe9e3 in QtPrivate::QSlotObject<void (QgsLayerStylingWidget::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555556711730, r=0x5555566f0f60, a=0x7fffffffbaa0, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:120
#29 0x00007ffff3d8a81e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ffff3d96e38 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007ffff3d8b313 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007ffff4a3635c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007ffff4a3db11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007ffff55b1a89 in QgsApplication::notify(QObject*, QEvent*) (this=0x7fffffffda00, receiver=0x555556707bc0, event=0x7fffffffbe50) at /home/webmaster/dev/cpp/QGIS/src/core/qgsapplication.cpp:295
#35 0x00007ffff3d5e8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007ffff3db1eae in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007ffff3db2409 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fffea4af377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fffea4af5e0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fffea4af68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ffff3db2f0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007ffff3d5c88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
</pre>