/opt/Qt/QtO/Examples/Qt-5.13.0/sensors/sensor_explorer:/opt/Qt/QtO/Examples/Qt-5.13.0/sensors/sensor_explorer$ ./sensor_explorer g./sensor_explorerd./sensor_explorerb./sensor_explorer ./sensor_explorer GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./sensor_explorer...(no debugging symbols found)...done. (gdb) run Starting program: QtO/Examples/Qt-5.13.0/sensors/sensor_explorer/sensor_explorer [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffed322700 (LWP 738)] [New Thread 0x7fffe7fff700 (LWP 739)] [New Thread 0x7fffded8f700 (LWP 768)] Found type "QLightSensor" Found identifier "iio-sensor-proxy.lightsensor" [New Thread 0x7fffddf72700 (LWP 769)] Adding identifier "iio-sensor-proxy.lightsensor" Found type "QOrientationSensor" Found identifier "iio-sensor-proxy.orientationsensor" Adding identifier "iio-sensor-proxy.orientationsensor" Found type "QAmbientLightSensor" Found identifier "generic.als" Adding identifier "generic.als" Found type "QCompass" Found identifier "iio-sensor-proxy.compass" Adding identifier "iio-sensor-proxy.compass" Thread 1 "sensor_explorer" received signal SIGSEGV, Segmentation fault. QV4::QObjectWrapper::getProperty (engine=0x555555827b70, object=0x555555b25680, property=0x0) at jsruntime/qv4qobjectwrapper.cpp:238 238 jsruntime/qv4qobjectwrapper.cpp: No such file or directory. (gdb) where #0 QV4::QObjectWrapper::getProperty (engine=0x555555827b70, object=0x555555b25680, property=0x0) at jsruntime/qv4qobjectwrapper.cpp:238 #1 0x00007ffff61d1fe2 in QV4::QObjectWrapper::virtualResolveLookupGetter (object=0x7fffec0ce900, engine=0x555555827b70, lookup=) at jsruntime/qv4qobjectwrapper.cpp:859 #2 0x00007ffff61ea752 in QV4::Moth::VME::interpret (frame=0x7fffffff24b0, engine=0x555555827b70, code=0x7ffff7fae90e "L") at jsruntime/qv4vme_moth.cpp:812 #3 0x00007ffff61eeb89 in QV4::Moth::VME::exec (frame=frame@entry=0x7fffffff24b0, engine=engine@entry=0x555555827b70) at jsruntime/qv4vme_moth.cpp:505 #4 0x00007ffff61848f7 in QV4::Function::call (this=this@entry=0x555555b99830, thisObject=, argv=, argc=, context=) at jsruntime/qv4function.cpp:69 #5 0x00007ffff62e8b19 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x555555b8b280, callData=callData@entry=0x7fffec0ce898, isUndefined=isUndefined@entry=0x7fffffff267f) at qml/qqmljavascriptexpression.cpp:211 #6 0x00007ffff62ee197 in QQmlBinding::evaluate (this=this@entry=0x555555b8b280, isUndefined=isUndefined@entry=0x7fffffff267f) at qml/qqmlbinding.cpp:209 #7 0x00007ffff62f2d52 in QQmlNonbindingBinding::doUpdate (this=0x555555b8b280, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:245 #8 0x00007ffff62ef973 in QQmlBinding::update (this=0x555555b8b280, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:185 #9 0x00007ffff62efc3e in QQmlBinding::refresh (this=) at qml/qqmlbinding.cpp:535 #10 0x00007ffff62c9d98 in QQmlNotifier::emitNotify (endpoint=, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104 #11 0x00007ffff62748e4 in QQmlData::signalEmitted (object=0x555555b999e0, index=47, a=0x0) at qml/qqmlengine.cpp:887 #12 0x00007ffff5b1e152 in QMetaObject::activate (sender=0x555555b999e0, signalOffset=, local_signal_index=, argv=argv@entry=0x0) at kernel/qobject.cpp:3669 #13 0x00007ffff626ea15 in QQmlVMEMetaObject::activate (this=this@entry=0x555555b8aff0, object=, index=, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1246 #14 0x00007ffff6271011 in QQmlVMEMetaObject::writeVarProperty (this=0x555555b8aff0, id=9, value=...) at qml/qqmlvmemetaobject.cpp:1063 #15 0x00007ffff627113f in QQmlVMEMetaObject::setVMEProperty (this=, index=, v=...) at qml/qqmlvmemetaobject.cpp:1166 #16 0x00007ffff62f04a6 in QQmlBinding::slowWrite (this=this@entry=0x555555bd0890, core=..., valueTypeData=..., result=..., isUndefined=isUndefined@entry=false, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:431 #17 0x00007ffff62f17c8 in GenericBinding<0>::write (this=0x555555bd0890, result=..., isUndefined=, flags=...) at qml/qqmlbinding.cpp:325 #18 0x00007ffff62f2d9c in QQmlNonbindingBinding::doUpdate (this=0x555555bd0890, watcher=..., flags=..., scope=...) ---Type to continue, or q to quit--- at qml/qqmlbinding.cpp:249 #19 0x00007ffff62ef973 in QQmlBinding::update (this=0x555555bd0890, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:185 #20 0x00007ffff62efc3e in QQmlBinding::refresh (this=) at qml/qqmlbinding.cpp:535 #21 0x00007ffff62c9d98 in QQmlNotifier::emitNotify (endpoint=, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104 #22 0x00007ffff62748e4 in QQmlData::signalEmitted (object=0x555555b999e0, index=41, a=0x0) at qml/qqmlengine.cpp:887 #23 0x00007ffff5b1e152 in QMetaObject::activate (sender=0x555555b999e0, signalOffset=, local_signal_index=, argv=argv@entry=0x0) at kernel/qobject.cpp:3669 #24 0x00007ffff626ea15 in QQmlVMEMetaObject::activate (this=this@entry=0x555555b8aff0, object=, index=, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1246 #25 0x00007ffff6271011 in QQmlVMEMetaObject::writeVarProperty (this=0x555555b8aff0, id=3, value=...) at qml/qqmlvmemetaobject.cpp:1063 #26 0x00007ffff627113f in QQmlVMEMetaObject::setVMEProperty (this=, index=, v=...) at qml/qqmlvmemetaobject.cpp:1166 #27 0x00007ffff62f04a6 in QQmlBinding::slowWrite (this=this@entry=0x555555bc9280, core=..., valueTypeData=..., result=..., isUndefined=isUndefined@entry=false, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:431 #28 0x00007ffff62f17c8 in GenericBinding<0>::write (this=0x555555bc9280, result=..., isUndefined=, flags=...) at qml/qqmlbinding.cpp:325 #29 0x00007ffff62f2d9c in QQmlNonbindingBinding::doUpdate (this=0x555555bc9280, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:249 #30 0x00007ffff62ef973 in QQmlBinding::update (this=0x555555bc9280, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:185 #31 0x00007ffff62efc3e in QQmlBinding::refresh (this=) at qml/qqmlbinding.cpp:535 #32 0x00007ffff62c9d98 in QQmlNotifier::emitNotify (endpoint=, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104 #33 0x00007ffff62748e4 in QQmlData::signalEmitted (object=0x555555b999e0, index=40, a=0x0) at qml/qqmlengine.cpp:887 #34 0x00007ffff5b1e152 in QMetaObject::activate (sender=0x555555b999e0, signalOffset=, local_signal_index=, argv=argv@entry=0x0) at kernel/qobject.cpp:3669 #35 0x00007ffff626ea15 in QQmlVMEMetaObject::activate (this=this@entry=0x555555b8aff0, object=, index=, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1246 #36 0x00007ffff62704ff in QQmlVMEMetaObject::metaCall (this=0x555555b8aff0, o=, c=, _id=, a=) at qml/qqmlvmemetaobject.cpp:839 #37 0x00007ffff62860ca in QQmlPropertyData::writeProperty (this=this@entry=0x7fffe009ca28, target=target@entry=0x555555b999e0, value=value@entry=0x7fffffff7f90, flags=...) at ../../include/QtQml/5.13.0/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:350 ---Type to continue, or q to quit--- #38 0x00007ffff6284c36 in QQmlPropertyPrivate::write (object=object@entry=0x555555b999e0, property=..., value=..., context=0x555555c56b40, flags=..., flags@entry=...) at qml/qqmlproperty.cpp:1234 #39 0x00007ffff61d287b in QV4::QObjectWrapper::setProperty (engine=engine@entry=0x555555827b70, object=object@entry=0x555555b999e0, property=0x7fffe009ca28, value=...) at jsruntime/qv4qobjectwrapper.cpp:567 #40 0x00007ffff61d3667 in QV4::QObjectWrapper::setQmlProperty (engine=0x555555827b70, qmlContext=, object=0x555555b999e0, name=, revisionMode=QV4::QObjectWrapper::IgnoreRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:437 #41 0x00007ffff61d37d7 in QV4::QObjectWrapper::virtualPut (m=0x7fffec0ce818, id=..., value=..., receiver=0x7fffec0ce818) at jsruntime/qv4qobjectwrapper.cpp:723 #42 0x00007ffff619b667 in QV4::Object::put (receiver=0x7fffec0ce818, v=..., id=..., this=0x7fffec0ce818) at jsruntime/qv4object_p.h:324 #43 QV4::Object::virtualResolveLookupSetter (object=0x7fffec0ce818, engine=0x555555827b70, lookup=0x555555a50800, value=...) at jsruntime/qv4object.cpp:800 #44 0x00007ffff61eb13e in QV4::Moth::VME::interpret (frame=0x7fffffff8490, engine=0x555555827b70, code=0x7ffff7fd836c "/]\001") at jsruntime/qv4vme_moth.cpp:717 #45 0x00007ffff61eeb89 in QV4::Moth::VME::exec (frame=frame@entry=0x7fffffff8490, engine=engine@entry=0x555555827b70) at jsruntime/qv4vme_moth.cpp:505 #46 0x00007ffff61848f7 in QV4::Function::call (this=this@entry=0x555555b52590, thisObject=, argv=, argc=, context=) at jsruntime/qv4function.cpp:69 #47 0x00007ffff62e8b19 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x555555bfd630, callData=callData@entry=0x7fffec0ce798, isUndefined=isUndefined@entry=0x0) at qml/qqmljavascriptexpression.cpp:211 #48 0x00007ffff6291042 in QQmlBoundSignalExpression::evaluate (this=this@entry=0x555555bfd630, a=a@entry=0x7fffffffa1e0) at qml/qqmlboundsignal.cpp:225 #49 0x00007ffff6292a03 in QQmlBoundSignal_callback (e=0x555555ba1bc0, a=0x7fffffffa1e0) at qml/qqmlboundsignal.cpp:358 #50 0x00007ffff62c9d98 in QQmlNotifier::emitNotify (endpoint=, a=a@entry=0x7fffffffa1e0) at qml/qqmlnotifier.cpp:104 #51 0x00007ffff62748e4 in QQmlData::signalEmitted (object=0x555555bdbae0, index=33, a=0x7fffffffa1e0) at qml/qqmlengine.cpp:887 #52 0x00007ffff5b1e152 in QMetaObject::activate (sender=sender@entry=0x555555bdbae0, signalOffset=, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffffffa1e0) at kernel/qobject.cpp:3669 #53 0x00007ffff5b1e417 in QMetaObject::activate (sender=sender@entry=0x555555bdbae0, m=m@entry=0x7ffff7dc7700 , local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffffffa1e0) at kernel/qobject.cpp:3652 #54 0x00007ffff7a4b21b in QQuickRepeater::itemAdded (_t2=0x555555b999e0, _t1=0, this=0x555555bdbae0) at .moc/moc_qquickrepeater_p.cpp:313 #55 QQuickRepeater::createdItem (this=0x555555bdbae0, index=0) at items/qquickrepeater.cpp:418 ---Type to continue, or q to quit--- #56 0x00007ffff7a4d5a2 in QQuickRepeater::qt_static_metacall (_o=_o@entry=0x555555bdbae0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7fffffffa3e0) at .moc/moc_qquickrepeater_p.cpp:139 #57 0x00007ffff7a4daf8 in QQuickRepeater::qt_metacall (this=0x555555bdbae0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fffffffa3e0) at .moc/moc_qquickrepeater_p.cpp:264 #58 0x00007ffff5b1dc54 in QMetaObject::activate (sender=0x555555b48b20, signalOffset=, local_signal_index=local_signal_index@entry=2, argv=, argv@entry=0x7fffffffa3e0) at kernel/qobject.cpp:3816 #59 0x00007ffff5b1e417 in QMetaObject::activate (sender=, m=m@entry=0x7ffff66acb20 , local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffffffa3e0) at kernel/qobject.cpp:3652 #60 0x00007ffff633ddba in QQmlInstanceModel::createdItem (this=, _t1=0, _t2=0x555555b999e0) at .moc/moc_qqmlobjectmodel_p.cpp:233 #61 0x00007ffff6362380 in QQmlDelegateModelPrivate::emitCreatedItem (item=, incubationTask=0x555555bdae30, this=0x555555b48ca0) at types/qqmldelegatemodel_p_p.h:283 #62 QQmlDelegateModelPrivate::incubatorStatusChanged (this=0x555555b48ca0, incubationTask=0x555555bdae30, status=QQmlIncubator::Ready) at types/qqmldelegatemodel.cpp:955 #63 0x00007ffff628ccbc in QQmlIncubatorPrivate::changeStatus (s=, this=0x555555be8ba0) at qml/qqmlincubator.cpp:693 #64 QQmlIncubatorPrivate::incubate (this=this@entry=0x555555be8ba0, i=...) at qml/qqmlincubator.cpp:365 #65 0x00007ffff628d0b5 in QQmlEnginePrivate::incubate (this=0x555555776660, i=..., forContext=) at qml/qqmlincubator.cpp:89 #66 0x00007ffff6361862 in QQmlDelegateModelPrivate::object (this=this@entry=0x555555b48ca0, group=QQmlListCompositor::Default, index=index@entry=0, incubationMode=incubationMode@entry=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:1078 #67 0x00007ffff6361a82 in QQmlDelegateModel::object (this=, index=0, incubationMode=QQmlIncubator::AsynchronousIfNested) at types/qqmldelegatemodel.cpp:1114 #68 0x00007ffff7a4c925 in QQuickRepeater::modelUpdated (this=, changeSet=..., reset=) at items/qquickrepeater.cpp:514 #69 0x00007ffff7a4d570 in QQuickRepeater::qt_static_metacall (_o=_o@entry=0x555555bdbae0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=7, _a=_a@entry=0x7fffffffaa30) at .moc/moc_qquickrepeater_p.cpp:141 #70 0x00007ffff7a4daf8 in QQuickRepeater::qt_metacall (this=0x555555bdbae0, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0x7fffffffaa30) at .moc/moc_qquickrepeater_p.cpp:264 #71 0x00007ffff5b1dc54 in QMetaObject::activate (sender=sender@entry=0x555555b48b20, signalOffset=, local_signal_index=local_signal_index@entry=1, argv=, argv@entry=0x7fffffffaa30) ---Type to continue, or q to quit--- at kernel/qobject.cpp:3816 #72 0x00007ffff5b1e417 in QMetaObject::activate (sender=sender@entry=0x555555b48b20, m=m@entry=0x7ffff66acb20 , local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fffffffaa30) at kernel/qobject.cpp:3652 #73 0x00007ffff633dd76 in QQmlInstanceModel::modelUpdated (this=this@entry=0x555555b48b20, _t1=..., _t2=false) at .moc/moc_qqmlobjectmodel_p.cpp:226 #74 0x00007ffff6358688 in QQmlDelegateModelPrivate::emitModelUpdated (this=, changeSet=..., reset=) at types/qqmldelegatemodel.cpp:1568 #75 0x00007ffff635e7e4 in QQmlDelegateModelGroupPrivate::emitModelUpdated (this=0x555555b48f40, reset=reset@entry=false) at types/qqmldelegatemodel.cpp:2441 #76 0x00007ffff635ebe2 in QQmlDelegateModelPrivate::emitChanges (this=0x555555b48ca0) at types/qqmldelegatemodel.cpp:1613 #77 0x00007ffff6360565 in QQmlDelegateModel::_q_itemsInserted (this=, index=0, count=1) at types/qqmldelegatemodel.cpp:1358 #78 0x00007ffff6365bb5 in QQmlDelegateModel::qt_static_metacall (_o=_o@entry=0x555555b48b20, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=8, _a=_a@entry=0x7fffffffad20) at .moc/moc_qqmldelegatemodel_p.cpp:199 #79 0x00007ffff6365f58 in QQmlDelegateModel::qt_metacall (this=0x555555b48b20, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0x7fffffffad20) at .moc/moc_qqmldelegatemodel_p.cpp:335 #80 0x00007ffff5b1dc54 in QMetaObject::activate (sender=sender@entry=0x555555b72f30, signalOffset=, local_signal_index=local_signal_index@entry=10, argv=, argv@entry=0x7fffffffad20) at kernel/qobject.cpp:3816 #81 0x00007ffff5b1e417 in QMetaObject::activate (sender=sender@entry=0x555555b72f30, m=m@entry=0x7ffff600f0c0 , local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7fffffffad20) at kernel/qobject.cpp:3652 #82 0x00007ffff5a956ae in QAbstractItemModel::rowsInserted (this=this@entry=0x555555b72f30, _t1=..., _t2=0, _t3=0, _t4=...) at .moc/moc_qabstractitemmodel.cpp:592 #83 0x00007ffff5a9d24b in QAbstractItemModel::endInsertRows (this=this@entry=0x555555b72f30) at itemmodels/qabstractitemmodel.cpp:2747 #84 0x00007ffff634c4d9 in QQmlListModel::emitItemsInserted (this=0x555555b72f30) at types/qqmllistmodel.cpp:2124 #85 0x00007ffff635317e in QQmlListModel::insert (this=0x555555b72f30, args=) at types/qqmllistmodel.cpp:2380 #86 0x00007ffff63553e4 in QQmlListModel::qt_static_metacall (_o=_o@entry=0x555555b72f30, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=4, _a=_a@entry=0x7fffffffb040) at .moc/moc_qqmllistmodel_p.cpp:129 #87 0x00007ffff63562f8 in QQmlListModel::qt_metacall (this=0x555555b72f30, _c=QMetaObject::InvokeMetaMethod, _id=4, ---Type to continue, or q to quit--- _a=0x7fffffffb040) at .moc/moc_qqmllistmodel_p.cpp:212 #88 0x00007ffff62bfbb9 in QQmlObjectOrGadget::metacall (this=this@entry=0x7fffffffafc0, type=type@entry=QMetaObject::InvokeMetaMethod, index=59, argv=argv@entry=0x7fffffffb040) at qml/qqmlpropertycache.cpp:1762 #89 0x00007ffff61d0591 in QV4::QObjectMethod::callInternal (this=, thisObject=, argv=, argc=2) at jsruntime/qv4qobjectwrapper.cpp:2113 #90 0x00007ffff61ebc0b in QV4::FunctionObject::call (argc=, argv=, thisObject=, this=) at ../../include/QtQml/5.13.0/QtQml/private/../../../../../src/qml/jsruntime/qv4functionobject_p.h:202 #91 QV4::Moth::VME::interpret (frame=0x7fffffffb300, engine=0x555555827b70, code=0x7ffff7fd607b ".$") at jsruntime/qv4vme_moth.cpp:822 #92 0x00007ffff61eeb89 in QV4::Moth::VME::exec (frame=frame@entry=0x7fffffffb300, engine=engine@entry=0x555555827b70) at jsruntime/qv4vme_moth.cpp:505 #93 0x00007ffff6185850 in QV4::ArrowFunction::virtualCall (fo=, thisObject=, argv=, argc=) at jsruntime/qv4functionobject.cpp:520 #94 0x00007ffff624c07c in QV4::FunctionObject::call (argc=2, argv=0x7fffec0ce5f8, thisObject=0x7fffec0ce638, this=0x7fffffffb3a0) at jsruntime/qv4functionobject_p.h:202 #95 QV4::Runtime::method_callQmlContextPropertyLookup (engine=0x555555827b70, index=, argv=0x7fffec0ce5f8, argc=2) at jsruntime/qv4runtime.cpp:1385 #96 0x00007ffff61ea547 in QV4::Moth::VME::interpret (frame=0x7fffffffb610, engine=0x555555827b70, code=0x7ffff7fd5e81 "\002") at jsruntime/qv4vme_moth.cpp:857 #97 0x00007ffff61eeb89 in QV4::Moth::VME::exec (frame=frame@entry=0x7fffffffb610, engine=engine@entry=0x555555827b70) at jsruntime/qv4vme_moth.cpp:505 #98 0x00007ffff6185850 in QV4::ArrowFunction::virtualCall (fo=, thisObject=, argv=, argc=) at jsruntime/qv4functionobject.cpp:520 #99 0x00007ffff624c07c in QV4::FunctionObject::call (argc=1, argv=0x7fffec0ce538, thisObject=0x7fffec0ce5a0, this=0x7fffffffb6b0) at jsruntime/qv4functionobject_p.h:202 #100 QV4::Runtime::method_callQmlContextPropertyLookup (engine=0x555555827b70, index=, argv=0x7fffec0ce538, argc=1) at jsruntime/qv4runtime.cpp:1385 #101 0x00007ffff61ea547 in QV4::Moth::VME::interpret (frame=0x7fffffffb920, engine=0x555555827b70, code=0x7ffff7fd66d5 "\030\006\026\bv") at jsruntime/qv4vme_moth.cpp:857 #102 0x00007ffff61eeb89 in QV4::Moth::VME::exec (frame=frame@entry=0x7fffffffb920, engine=engine@entry=0x555555827b70) at jsruntime/qv4vme_moth.cpp:505 #103 0x00007ffff61848f7 in QV4::Function::call (this=this@entry=0x555555a1fe50, thisObject=, argv=, argc=, context=) at jsruntime/qv4function.cpp:69 #104 0x00007ffff62e8b19 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x555555a5d480, ---Type to continue, or q to quit--- callData=callData@entry=0x7fffec0ce4d0, isUndefined=isUndefined@entry=0x0) at qml/qqmljavascriptexpression.cpp:211 #105 0x00007ffff6291042 in QQmlBoundSignalExpression::evaluate (this=this@entry=0x555555a5d480, a=a@entry=0x0) at qml/qqmlboundsignal.cpp:225 #106 0x00007ffff6292a03 in QQmlBoundSignal_callback (e=0x555555a8b8d0, a=0x0) at qml/qqmlboundsignal.cpp:358 #107 0x00007ffff62c9d98 in QQmlNotifier::emitNotify (endpoint=, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104 #108 0x00007ffff62748e4 in QQmlData::signalEmitted (object=0x555555862f20, index=3, a=0x0) at qml/qqmlengine.cpp:887 #109 0x00007ffff5b1e152 in QMetaObject::activate (sender=sender@entry=0x555555862f20, signalOffset=, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3669 #110 0x00007ffff5b1e417 in QMetaObject::activate (sender=sender@entry=0x555555862f20, m=m@entry=0x7ffff66ae580 , local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3652 #111 0x00007ffff63ac9e0 in QQmlComponentAttached::completed (this=this@entry=0x555555862f20) at .moc/moc_qqmlcomponentattached_p.cpp:143 #112 0x00007ffff62fdcf8 in QQmlObjectCreator::finalize (this=0x555555825000, interrupt=...) at qml/qqmlobjectcreator.cpp:1424 #113 0x00007ffff6287707 in QQmlComponentPrivate::complete (enginePriv=0x555555776660, state=0x5555558368c0) at qml/qqmlcomponent.cpp:923 #114 0x00007ffff6287822 in QQmlComponentPrivate::completeCreate (this=0x555555836820) at qml/qqmlcomponent.cpp:959 #115 0x00007ffff628761a in QQmlComponent::create (this=0x555555863850, context=0x555555862700) at qml/qqmlcomponent.cpp:785 #116 0x00007ffff62f41cb in QQmlApplicationEnginePrivate::finishLoad (this=this@entry=0x555555776660, c=c@entry=0x555555863850) at qml/qqmlapplicationengine.cpp:136 #117 0x00007ffff62f444e in QQmlApplicationEnginePrivate::startLoad (this=0x555555776660, url=..., data=..., dataFlag=dataFlag@entry=false) at qml/qqmlapplicationengine.cpp:120 #118 0x00007ffff62f447d in QQmlApplicationEngine::load (this=, url=...) at qml/qqmlapplicationengine.cpp:263 #119 0x000055555555503a in main () (gdb)