Here's the most frequent backtrace now. It's very easy to obtain: start shotcut, load a video, try to apply a filter that requires parameters (say size and position), watch shotcut segfault.
It seems to come from qml code. Somewhat a pain to try to figure it out further, since we don't have DEBUG_PACKAGES for qt5 (which should be easy to do NOW with the no-strip framework). What I can deduce: - all lower levels come from name being complete garbage - name is a char* generated from a QString in qmlfilter.cpp (backtrace #4): QRectF QmlFilter::getRect(QString name, int position) { if (!m_filter.is_valid()) return QRectF(); const char* s = m_filter.get(name.toUtf8().constData()); if (s) { const char* propertyName = name.toUtf8().constData(); mlt_rect rect; if (position < 0) { rect = m_filter.get_rect(propertyName); } else { rect = m_filter.anim_get_rect(propertyName, position, duration()); } if (::strchr(s, '%')) { return QRectF(qRound(rect.x * MLT.profile().width()), qRound(rect.y * MLT.profile().height()), qRound(rect.w * MLT.profile().width()), qRound(rect.h * MLT.profile().height())); } else { return QRectF(rect.x, rect.y, rect.w, rect.h); } } else { return QRectF(0.0, 0.0, 0.0, 0.0); } } this seems to be the glue with mlt_properties, with various other functions. Unfortunately, the name parameter has been optimized away... so I have no idea what's in it. const char* propertyName = name.toUtf8().constData(); seems to be leggit code. everything seems to be internal qml gooey for quite a few frames, notice #38: #38 0x00000d7ced60e08f in QMetaObject::invokeMethod (obj=0xd7f0af8cd00, member=0xd7f5cd7ef98 '\337' <repeats 103 times>, <incomplete sequence \337><error: Cannot access memory at address 0xd7f5cd7f000>, val0=..., at /usr/local/include/X11/qt5/QtCore/qobjectdefs.h:464 again, the same pattern, and indeed the same address! So member itself is bogus (or the debugger lost its way ?) #39 comes from the end of: void FiltersDock::setCurrentFilter(QmlFilter* filter, QmlMetadata* meta, int index) { if (filter && filter->producer().is_valid()) { m_producer.setProducer(filter->producer()); } else { Mlt::Producer emptyProducer(mlt_producer(0)); m_producer.setProducer(emptyProducer); } m_qview.rootContext()->setContextProperty("filter", filter); m_qview.rootContext()->setContextProperty("metadata", meta); if (filter) connect(filter, SIGNAL(changed()), SIGNAL(changed())); else disconnect(this, SIGNAL(changed())); QMetaObject::invokeMethod(m_qview.rootObject(), "setCurrentFilter", Q_ARG(QVariant, QVariant(index))); } so member should point to setCurrentFilter, I don't get it.... Here's the full trace if anyone can make sense of it... Program terminated with signal SIGSEGV, Segmentation fault. #0 generate_hash (name=<optimized out>) at mlt_properties.c:336 336 mlt_properties.c: No such file or directory. [Current thread is 1 (process 266478)] (gdb) where #0 generate_hash (name=<optimized out>) at mlt_properties.c:336 #1 mlt_properties_find (self=0xd7f77f37080, name=0xd7f5cd7ef98 '\337' <repeats 103 times>, <incomplete sequence \337><error: Cannot access memory at address 0xd7f5cd7f000>) at mlt_properties.c:517 #2 0x00000d7fdaf007f8 in mlt_properties_get_rect (self=<optimized out>, name=0xd7f5cd7ef98 '\337' <repeats 103 times>, <incomplete sequence \337><error: Cannot access memory at address 0xd7f5cd7f000>) at mlt_properties.c:2626 #3 0x00000d7f19b3cca9 in Mlt::Properties::get_rect (this=<optimized out>, name=0x84a90b3e <error: Cannot access memory at address 0x84a90b3e>) at MltProperties.cpp:419 #4 0x00000d7ced615a20 in QmlFilter::getRect (this=0xd7f3e411a80, name=..., position=-1) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/qmltypes/qmlfilter.cpp:98 #5 0x00000d7ced6f1557 in QmlFilter::qt_static_metacall (_o=0xd7f3e411a80, _c=<optimized out>, _id=<optimized out>, _a=0x7f7ffffb0f68) at moc_qmlfilter.cpp:307 #6 0x00000d7ced6f24b6 in QmlFilter::qt_metacall (this=0xd7f3e411a80, _c=QMetaObject::InvokeMetaMethod, _id=15, _a=0x7f7ffffb0f68) at moc_qmlfilter.cpp:484 #7 0x00000d7f83afbfd4 in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #8 0x00000d7f3c75387f in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #9 0x00000d7f3c7509c9 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #10 0x00000d7f3c7504a4 in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #11 0x00000d7f3c76dee6 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #12 0x00000d7f3c76bd1b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #13 0x00000d7f3c706c07 in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #14 0x00000d7f3c897006 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #15 0x00000d7f3c8357d7 in QQmlBoundSignalExpression::evaluate(void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #16 0x00000d7f3c83600b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #17 0x00000d7f3c87c8d1 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #18 0x00000d7f83b5ec16 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #19 0x00000d7f83b5eb3a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #20 0x00000d7f3c8b2ef3 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #21 0x00000d7f3c82f09f in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #22 0x00000d7f3c82eebe in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #23 0x00000d7f3c82bcb3 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #24 0x00000d7f4cf19c86 in ?? () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #25 0x00000d7f4cf1b62a in ?? () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #26 0x00000d7f83afbfaf in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #27 0x00000d7f3c825eb2 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #28 0x00000d7f3c74ce8f in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #29 0x00000d7f3c74e1f4 in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #30 0x00000d7f3c6df239 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #31 0x00000d7f3c76ea40 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #32 0x00000d7f3c76bd1b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #33 0x00000d7f3c709bcf in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #34 0x00000d7f3c80cdff in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #35 0x00000d7f83afbfaf in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #36 0x00000d7f83b00656 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () from /usr/local/lib/qt5/libQt5Core.so.3.0 #37 0x00000d7f83affd8b in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #38 0x00000d7ced60e08f in QMetaObject::invokeMethod (obj=0xd7f0af8cd00, member=0xd7f5cd7ef98 '\337' <repeats 103 times>, <incomplete sequence \337><error: Cannot access memory at address 0xd7f5cd7f000>, val0=..., val1=<error reading variable: Cannot access memory at address 0x0>, val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at /usr/local/include/X11/qt5/QtCore/qobjectdefs.h:464 #39 FiltersDock::setCurrentFilter (this=0xd7f21155b00, filter=0xd7f3e411a80, meta=<optimized out>, index=<optimized out>) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/docks/filtersdock.cpp:81 #40 0x00000d7f83b5f477 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #41 0x00000d7f83b5eb3a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #42 0x00000d7ced6e4312 in FilterController::currentFilterChanged ( this=0xd7f77f37080, _t1=0xd7f3e411a80, _t2=0xd7fa1905e00, _t3=0) at moc_filtercontroller.cpp:282 #43 0x00000d7ced5748fd in FilterController::setCurrentFilter (this=0xd7f3b512c00, attachedIndex=<optimized out>, isNew=<optimized out>) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/controllers/filtercontroller.cpp:150 #44 0x00000d7ced574c63 in FilterController::handleAttachedRowsInserted ( this=0xd7f3b512c00, first=0) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/controllers/filtercontroller.cpp:203 #45 0x00000d7f83b5f477 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #46 0x00000d7f83b5eb3a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #47 0x00000d7f83a67a53 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #48 0x00000d7f83a679b4 in QAbstractItemModel::endInsertRows() () from /usr/local/lib/qt5/libQt5Core.so.3.0 #49 0x00000d7ced60bc90 in AttachedFiltersModel::add (this=0xd7f3b512c58, meta=0xd7fa1905e00) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/models/attachedfiltersmodel.cpp:304 #50 0x00000d7ced6edf26 in AttachedFiltersModel::qt_metacall (this=0xd7f3b512c58, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7f7ffffb4fd8) at moc_attachedfiltersmodel.cpp:214 #51 0x00000d7f83afbfd4 in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #52 0x00000d7f3c75387f in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #53 0x00000d7f3c7509c9 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #54 0x00000d7f3c7501bd in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #55 0x00000d7f3c76dee6 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #56 0x00000d7f3c76bd1b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #57 0x00000d7f3c706c07 in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #58 0x00000d7f3c897006 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #59 0x00000d7f3c8357d7 in QQmlBoundSignalExpression::evaluate(void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #60 0x00000d7f3c83600b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #61 0x00000d7f3c87c8d1 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #62 0x00000d7f83b5ec16 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #63 0x00000d7f3c80bcf3 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #64 0x00000d7f83afbfaf in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #65 0x00000d7f3c75387f in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #66 0x00000d7f3c7509c9 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #67 0x00000d7f3c7501bd in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #68 0x00000d7f3c7f96f8 in QV4::Runtime::method_callQmlContextPropertyLookup(QV4::ExecutionEngine*, unsigned int, QV4::Value*, int) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #69 0x00000d7f3c76d980 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #70 0x00000d7f3c76bd1b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #71 0x00000d7f3c709bcf in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #72 0x00000d7f3c76dee6 in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #73 0x00000d7f3c76bd1b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #74 0x00000d7f3c706c07 in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #75 0x00000d7f3c897006 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #76 0x00000d7f3c8357d7 in QQmlBoundSignalExpression::evaluate(void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #77 0x00000d7f3c83600b in ?? () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #78 0x00000d7f3c87c8d1 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/local/lib/qt5/libQt5Qml.so.3.0 #79 0x00000d7f83b5ec16 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #80 0x00000d7f83b5eb3a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #81 0x00000d7f4cf0471a in QQuickMouseArea::setPressed(Qt::MouseButton, bool, Qt::MouseEventSource) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #82 0x00000d7f4cf0530b in QQuickMouseArea::mouseReleaseEvent(QMouseEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #83 0x00000d7f4ce57617 in QQuickItem::event(QEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #84 0x00000d7f9adc2e3d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #85 0x00000d7f9adc4ec9 in QApplication::notify(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #86 0x00000d7f83af00fd in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #87 0x00000d7f83af0df5 in QCoreApplication::sendEvent(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #88 0x00000d7f4ce71ce7 in QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #89 0x00000d7f4ce73cc4 in QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #90 0x00000d7f4ce74a96 in QQuickWindowPrivate::handleMouseEvent(QMouseEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #91 0x00000d7f492b305a in QWindow::event(QEvent*) () from /usr/local/lib/qt5/libQt5Gui.so.3.0 #92 0x00000d7f4ce6f9ca in QQuickWindow::event(QEvent*) () from /usr/local/lib/qt5/libQt5Quick.so.3.0 #93 0x00000d7f9adc2e3d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #94 0x00000d7f9adc4ec9 in QApplication::notify(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #95 0x00000d7f83af00fd in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #96 0x00000d7f83af0df5 in QCoreApplication::sendEvent(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #97 0x00000d7fa511a1e0 in QQuickWidget::mouseReleaseEvent(QMouseEvent*) () from /usr/local/lib/qt5/libQt5QuickWidgets.so.3.0 #98 0x00000d7f9ae27d49 in QWidget::event(QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #99 0x00000d7fa511a6f9 in QQuickWidget::event(QEvent*) () from /usr/local/lib/qt5/libQt5QuickWidgets.so.3.0 #100 0x00000d7f9adc2e3d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #101 0x00000d7f9adc594c in QApplication::notify(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #102 0x00000d7f83af00fd in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #103 0x00000d7f83af0e69 in QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #104 0x00000d7f9adc3cc0 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #105 0x00000d7f9ae63698 in ?? () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #106 0x00000d7f9ae61d0f in ?? () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #107 0x00000d7f9adc2e3d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #108 0x00000d7f9adc4ec9 in QApplication::notify(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #109 0x00000d7f83af00fd in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #110 0x00000d7f83af0e69 in QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #111 0x00000d7f49298ec2 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/local/lib/qt5/libQt5Gui.so.3.0 #112 0x00000d7f49298122 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/local/lib/qt5/libQt5Gui.so.3.0 #113 0x00000d7f4926e0f0 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/lib/qt5/libQt5Gui.so.3.0 #114 0x00000d7f98ddd94d in ?? () from /usr/local/lib/qt5/libQt5XcbQpa.so.0.0 #115 0x00000d7f98177c78 in g_main_context_dispatch () from /usr/local/lib/libglib-2.0.so.4201.4 #116 0x00000d7f98178065 in ?? () from /usr/local/lib/libglib-2.0.so.4201.4 #117 0x00000d7f98178145 in g_main_context_iteration () from /usr/local/lib/libglib-2.0.so.4201.4 #118 0x00000d7f83bc290a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #119 0x00000d7f98dddada in ?? () from /usr/local/lib/qt5/libQt5XcbQpa.so.0.0 #120 0x00000d7f83aeaf33 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #121 0x00000d7f83aeb16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/lib/qt5/libQt5Core.so.3.0 #122 0x00000d7f83af0acb in QCoreApplication::exec() () from /usr/local/lib/qt5/libQt5Core.so.3.0 #123 0x00000d7f49297b74 in QGuiApplication::exec() () from /usr/local/lib/qt5/libQt5Gui.so.3.0 #124 0x00000d7f9adc44e7 in QApplication::exec() () from /usr/local/lib/qt5/libQt5Widgets.so.3.0 #125 0x00000d7ced5266f9 in main (argc=1, argv=<optimized out>) at /build/pobj/shotcut-20.04.12/shotcut-20.04.12/src/main.cpp:351