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Bug
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Resolution: Unresolved
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Not Evaluated
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None
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6.8.3, 6.10.0
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None
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All
Calling the destroy() method of QQmlPropertyMap in QML environment cause the program to crash.
Here's a minimal reproducible example:
main.cpp
#include <QGuiApplication> #include <QQmlApplicationEngine> #include <QQmlContext> #include <QQmlPropertyMap> class Utils : public QObject { Q_OBJECT public: explicit Utils(QObject *parent = nullptr) : QObject(parent) { } public slots: QQmlPropertyMap *createObject(QObject *parent = nullptr) { return new QQmlPropertyMap(parent); } }; int main(int argc, char *argv[]) { QGuiApplication app(argc, argv); Utils utils; QQmlApplicationEngine engine; engine.rootContext()->setContextProperty("Utils", &utils); const QUrl url(QStringLiteral("qrc:/main.qml")); QObject::connect( &engine, &QQmlApplicationEngine::objectCreated, &app, [url](QObject *obj, const QUrl &objUrl) { if (!obj && url == objUrl) QCoreApplication::exit(-1); }, Qt::QueuedConnection); engine.load(url); return app.exec(); } #include "main.moc"
main.qml
import QtQuick 2.12 import QtQuick.Window 2.12 import QtQuick.Controls 2.12 Window { id: window width: 640 height: 480 visible: true title: qsTr("Hello World") Button { anchors.centerIn: parent text: "Crash Me" onClicked: { const person = Utils.createObject(window); person.groan = "114514"; console.log(person.groan); person.destroy(); } } }
call stack
> Qt6Qml.dll!QV4::setupQObjectMethodLookup<QV4::Heap::QObjectMethod>(QV4::Lookup * lookup, const QQmlData * ddata, const QQmlPropertyData * propertyData, const QV4::Object * self, QV4::Heap::QObjectMethod * method) Line 484 C++
Qt6Qml.dll!QV4::QObjectWrapper::virtualResolveLookupGetter(const QV4::Object * object, QV4::ExecutionEngine * engine, QV4::Lookup * lookup) Line 1125 C++
Qt6Qml.dll!QV4::Moth::VME::interpret(QV4::JSTypesStackFrame * frame, QV4::ExecutionEngine * engine, const char * code) Line 802 C++
Qt6Qml.dll!QV4::Moth::VME::exec(QV4::JSTypesStackFrame * frame, QV4::ExecutionEngine * engine) Line 492 C++
[Inline Frame] Qt6Qml.dll!QV4::doCall(QV4::Function *) Line 52 C++
Qt6Qml.dll!QV4::Function::call(const QV4::Value * thisObject, const QV4::Value * argv, int argc, QV4::ExecutionContext * context) Line 77 C++
[Inline Frame] Qt6Qml.dll!QV4::Function::call::__l5::<lambda_1>::operator()(const QV4::Value *) Line 28 C++
Qt6Qml.dll!QV4::convertAndCall<`QV4::Function::call'::`5'::<lambda_1>>(QV4::ExecutionEngine * engine, QObject * thisObject, void * * a, const QMetaType * types, int argc, QV4::Function::call::__l5::<lambda_1> call) Line 199 C++
Qt6Qml.dll!QV4::Function::call(QObject * thisObject, void * * a, const QMetaType * types, int argc, QV4::ExecutionContext * context) Line 25 C++
Qt6Qml.dll!QQmlJavaScriptExpression::evaluate(void * * a, const QMetaType * types, int argc) Line 274 C++
Qt6Qml.dll!QQmlBoundSignalExpression::evaluate(void * * a) Line 197 C++
Qt6Qml.dll!QQmlBoundSignal_callback(QQmlNotifierEndpoint * e, void * * a) Line 316 C++
Qt6Qml.dll!QQmlNotifier::emitNotify(QQmlNotifierEndpoint * endpoint, void * * a) Line 75 C++
Qt6Core.dll!doActivate<0>(QObject * sender, int signal_index, void * * argv) Line 4151 C++
Qt6Core.dll!QMetaObject::activate(QObject * sender, const QMetaObject * m, int local_signal_index, void * * argv) Line 4316 C++
Qt6QuickTemplates2.dll!QQuickAbstractButtonPrivate::trigger(bool doubleClick) Line 393 C++
Qt6QuickTemplates2.dll!QQuickAbstractButtonPrivate::handleRelease(const QPointF & point, unsigned long timestamp) Line 194 C++
Qt6QuickTemplates2.dll!QQuickControl::mouseReleaseEvent(QMouseEvent * event) Line 2067 C++
Qt6Quick.dll!QQuickItemPrivate::deliverPointerEvent(QEvent * event) Line 5692 C++
Qt6Quick.dll!QQuickItem::event(QEvent * ev) Line 9240 C++
[Inline Frame] Qt6Core.dll!QCoreApplicationPrivate::notify_helper(QObject *) Line 1281 C++
[Inline Frame] Qt6Core.dll!doNotify(QObject *) Line 1210 C++
Qt6Core.dll!QCoreApplication::notify(QObject * receiver, QEvent * event) Line 1194 C++
Qt6Core.dll!QCoreApplication::notifyInternal2(QObject * receiver, QEvent * event) Line 1109 C++
Qt6Quick.dll!QQuickDeliveryAgentPrivate::deliverMatchingPointsToItem(QQuickItem * item, bool isGrabber, QPointerEvent * pointerEvent, bool handlersOnly) Line 2476 C++
Qt6Quick.dll!QQuickDeliveryAgentPrivate::deliverUpdatedPoints(QPointerEvent * event) Line 2230 C++
Qt6Quick.dll!QQuickDeliveryAgentPrivate::deliverPointerEvent(QPointerEvent * event) Line 2067 C++
Qt6Quick.dll!QQuickDeliveryAgentPrivate::handleMouseEvent(QMouseEvent * event) Line 1781 C++
Qt6Quick.dll!QQuickDeliveryAgent::event(QEvent * ev) Line 947 C++
Qt6Quick.dll!QQuickWindow::event(QEvent * event) Line 1559 C++
[Inline Frame] Qt6Core.dll!QCoreApplicationPrivate::notify_helper(QObject *) Line 1281 C++
[Inline Frame] Qt6Core.dll!doNotify(QObject *) Line 1210 C++
Qt6Core.dll!QCoreApplication::notify(QObject * receiver, QEvent * event) Line 1194 C++
Qt6Core.dll!QCoreApplication::notifyInternal2(QObject * receiver, QEvent * event) Line 1109 C++
Qt6Gui.dll!QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent * e) Line 2474 C++
Qt6Gui.dll!QWindowSystemInterface::sendWindowSystemEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 1123 C++
Qt6Core.dll!QEventDispatcherWin32::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 485 C++
Qt6Gui.dll!QWindowsGuiEventDispatcher::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 37 C++
[Inline Frame] Qt6Core.dll!QEventLoop::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag>) Line 104 C++
Qt6Core.dll!QEventLoop::exec(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 185 C++
Qt6Core.dll!QCoreApplication::exec() Line 1452 C++
no_property_cache_crash.exe!00007ff7083319ff() Unknown
no_property_cache_crash.exe!00007ff708331100() Unknown
no_property_cache_crash.exe!00007ff70833350a() Unknown
kernel32.dll!BaseThreadInitThunk() Unknown
ntdll.dll!RtlUserThreadStart() Unknown