Hello, The crash looks bad. At a glance, I'd say that we never expect status to be nullptr. Could you submit a bug report to bugreports.qt.io/ and provide us with a minimal reproducer? Do I get this right that in Qt 5 there is no crash? It might be some issue with QML Script Compiler then working instead of qmlcachegen. If so, you could try to use old qmlcachegen and see if it helps. The docs [1] more or less describe the thing, see the section with QT_QMLCACHEGEN_EXECUTABLE to force the usage of qmlcachegen.
[1]: https://doc.qt.io/qt-6/qt-add-qml-module.html#caching-compiled-qml-sources -- Best Regards, Andrei ________________________________ From: Interest <interest-boun...@qt-project.org> on behalf of Александр Иваш <elder...@gmail.com> Sent: Saturday, April 30, 2022 3:06 PM To: interestqt-project.org <interest@qt-project.org> Subject: [Interest] Qt 5 app on Qt 6 crashes I'm in the process of porting the Qt 5 QML app to Qt 6. After having some fun with the QML namespaces difference finally I've got all the issues resolved and.... it crashed during startup. Crash happened inside qproperty.cpp: CompatPropertySafePoint::CompatPropertySafePoint(QBindingStatus *status, QUntypedPropertyData *property) : property(property) { // store a pointer to the currentBindingEvaluationState to avoid a TLS lookup in // the destructor (as these come with a non zero cost) currentState = &status->currentCompatProperty; /////// this line crashes! previousState = *currentState; *currentState = this; currentlyEvaluatingBindingList = &bindingStatus.currentlyEvaluatingBinding; bindingState = *currentlyEvaluatingBindingList; *currentlyEvaluatingBindingList = nullptr; } It happened because 'status' turned out to be 0xfeeefeeefeeefeee Just in case here is the stack trace: 1 QtPrivate::CompatPropertySafePoint::CompatPropertySafePoint qproperty.cpp 520 0x7ffa12c909f5 2 QObjectCompatProperty<QQuickItemPrivate,double,&QQuickItemPrivate::_qt_property_width_offset,{QQuickItemPrivate::setWidth,0},{QQuickItemPrivate::widthChanged,0},0>::bindingWrapper qproperty_p.h 488 0x7ffa19b652f2 3 QPropertyBindingPrivate::evaluateRecursive_inline qproperty_p.h 805 0x7ffa12a7b9fc 4 QPropertyBindingPrivate::evaluateRecursive qproperty.cpp 297 0x7ffa12c90c2c 5 QQmlPropertyBindingJS::expressionChanged qqmlpropertybinding.cpp 191 0x7ffa13fc1084 6 QQmlJavaScriptExpressionGuard_callback qqmljavascriptexpression.cpp 585 0x7ffa13ef0dcd 7 QQmlNotifier::emitNotify qqmlnotifier.cpp 105 0x7ffa13f5132a 8 QQmlData::signalEmitted qqmlengine.cpp 387 0x7ffa13e84c2f 9 doActivate<0> qobject.cpp 3815 0x7ffa12c7c7e0 10 QMetaObject::activate qobject.cpp 3993 0x7ffa12c64ac1 11 QQmlVMEMetaObject::activate qqmlvmemetaobject.cpp 1297 0x7ffa140cd866 12 QQmlVMEMetaObject::writeVarProperty qqmlvmemetaobject.cpp 1112 0x7ffa140cd0f9 13 QQmlVMEMetaObject::setVMEProperty qqmlvmemetaobject.cpp 1215 0x7ffa140c9135 14 QV4::QObjectWrapper::setProperty qv4qobjectwrapper.cpp 580 0x7ffa13ccb93c 15 QV4::QObjectWrapper::setQmlProperty qv4qobjectwrapper.cpp 475 0x7ffa13cca868 16 QV4::QQmlContextWrapper::virtualPut qv4qmlcontext.cpp 438 0x7ffa13cc2676 17 QV4::Object::put qv4object_p.h 318 0x7ffa1396bbad 18 QV4::ExecutionContext::setProperty qv4context.cpp 318 0x7ffa13b7bd95 19 QV4::Runtime::StoreNameSloppy::call qv4runtime.cpp 1004 0x7ffa13d3bc69 20 QV4::Moth::VME::interpret qv4vme_moth.cpp 694 0x7ffa13da7b42 ... <More> Any hints on how to troubleshoot further? _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
_______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
