This issue occurs under unspecified circumstances.
Bug trace:
" "[New LWP 3772]
[New LWP 3773]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f10
f311fb57 in waitpid () from /lib64/libpthread.so.0
#0 0x00007f10f311fb57 in waitpid () at /lib64/libpthread.so.0
#1 0x000000000043b4b1 in crashTrapper(int)
(sig=11) at tupcrashhandler.cpp:321
#2 0x00007f10f3120270 in
() at /lib64/libpthread.so.0 #3 0x00007f10f6ecaabf in QList<TupLayer*>:
:QList(QList<TupLayer*> const&) (this=0x7ffc59380180, l=...) at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/include/QtCore/qlist.h:810 #4 0x00007f10f6ecbdc3 in QtPrivate
::QForeachContainer<QList<TupLayer*> >::QForeachContainer(QList<TupLayer*> const&) (this=0x7ffc59380180, t=...) at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/include/QtCore/qg
lobal.h:976 #5 0x00007f10f6ecb405 in QtPrivate::qMakeForeachContainer<QList<TupLayer*>&>(QList<TupLayer*>&) (t=...) at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/includ
e/QtCore/qglobal.h:1004 #6 0x00007f10f6ec8544 in TupScene::getTweenNames(TupItemTweener::Type) (this=0x1600000000, type=TupItemTweener::Position) at tupscene.cpp:6
54 #7 0x00007f10da0e0d9c in Tweener::init(TupGraphicsScene*) (this=0x21b5910, gScene=0x7f10e4008490) at tweener.cpp:120 #8 0x00007f10f69d3e95 in TupGraphics
Scene::setTool(TupToolPlugin*) (this=0x7f10e4008490, plugin=0x21b5910) at tupgraphicsscene.cpp:1272 #9 0x00007f10f69c99be in TupPaintAreaBase::setTool(TupToolPlugi
n*) (this=0x216a160, tool=0x21b5910) at tuppaintareabase.cpp:147 #10 0x00007f10f877cae1 in TupDocumentView::selectTool() (this=0x1ee9800) at tupdocumentview.cpp:10
38 #11 0x00007f10f87bdc85 in TupDocumentView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x1ee9800, _c=QMetaObject::InvokeMetaMethod, _id=61, _a=0x7ffc59380970) at .moc/moc_tupdocumentview.cpp:436 #12 0x00007f10f385b989 in QMetaObject::activate(QObject*, int, int, void**) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Core.so.5 #13 0x00007f10f4fbd722 in QAction::triggered(bool) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Widgets.so.5 #14 0x00007f10f4fbfb40 in QAction::activate(QAction::ActionEvent) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Widgets.so.5 #15 0x00007f10f5128caa in QMenuPrivate::activateCausedStack(QVector<QPointer<QWidget> > const&, QAction*, QAction::ActionEvent, bool) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Widgets.so.5 #16 0x00007f10f512fdb6 in QMenuPrivate::activateAction(QAction*, QAction::ActionEvent, bool) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Widgets.so.5