(gdb) f 10
#10 QQmlDelegateModelItem::destroyObject (this=0x5b3fb77273f0)
    at /usr/src/debug/qt6-declarative/qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:2512
2512        QQmlData *data = QQmlData::get(object);

(gdb) l -
2507    void QQmlDelegateModelItem::destroyObject()
2508    {
2509        Q_ASSERT(object);
2510        Q_ASSERT(contextData);
2511
2512 =>     QQmlData *data = QQmlData::get(object);
2513        Q_ASSERT(data);
2514        if (data->ownContext) {
2515            data->ownContext->clearContext();
2516            data->ownContext->deepClearContextObject(object);
2517            data->ownContext.reset();
2518            data->context = nullptr;
2519        }
2520        /* QTBUG-87228: when destroying object at the application exit, the deferred
2521         * parent by setting it to QCoreApplication instance if it's nullptr, so
2522         * deletion won't work. Not to leak memory, make sure our object has a that
2523         * the parent claims the object at the end of the lifetime. When not at the
2524         * application exit, normal event loop will handle the deferred deletion
2525         * earlier.
2526         */
2527        if (Q_UNLIKELY(static_cast<QCoreApplicationPrivate *>(QCoreApplicationPrivate::get(QCoreApplication::instance()))->aboutToQuitEmitted)) {
2528            if (object->parent() == nullptr)
2529                object->setParent(QCoreApplication::instance());
2530        }
2531        object->deleteLater();
2532
2533        if (QQmlDelegateModelAttached *attachedObject = attached())
2534            attachedObject->m_cacheItem = nullptr;
2535
2536        contextData.reset();

(gdb) p object # cacheItem->object
$1 = {wp = {d = 0x0, value = 0x0}}