1 files changed, 73 insertions, 0 deletions
diff --git a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
index 25da013292..471d73e512 100644
--- a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
+++ b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
@@ -158,6 +158,7 @@ private slots:
     void nullReceiver();
     void functorReferencesConnection();
     void disconnectDisconnects();
+    void declarativeData();
 };
 
 struct QObjectCreatedOnShutdown
@@ -7689,5 +7690,77 @@ void tst_QObject::disconnectDisconnects()
 Q_STATIC_ASSERT(QtPrivate::HasQ_OBJECT_Macro<tst_QObject>::Value);
 Q_STATIC_ASSERT(!QtPrivate::HasQ_OBJECT_Macro<SiblingDeleter>::Value);
 
+#ifdef QT_BUILD_INTERNAL
+/*
+    Since QObjectPrivate stores the declarativeData pointer in a union with the pointer
+    to the currently destroyed child, calls to the QtDeclarative handlers need to be
+    correctly guarded. QTBUG-105286
+*/
+namespace QtDeclarative {
+static QAbstractDeclarativeData *theData;
+
+static void destroyed(QAbstractDeclarativeData *data, QObject *)
+{
+    QCOMPARE(data, theData);
+}
+static void signalEmitted(QAbstractDeclarativeData *data, QObject *, int, void **)
+{
+    QCOMPARE(data, theData);
+}
+// we can't use QCOMPARE in the next two functions, as they don't return void
+static int receivers(QAbstractDeclarativeData *data, const QObject *, int)
+{
+    QTest::qCompare(data, theData, "data", "theData", __FILE__, __LINE__);
+    return 0;
+}
+static bool isSignalConnected(QAbstractDeclarativeData *data, const QObject *, int)
+{
+    QTest::qCompare(data, theData, "data", "theData", __FILE__, __LINE__);
+    return true;
+}
+
+class Object : public QObject
+{
+    Q_OBJECT
+public:
+    using QObject::QObject;
+    ~Object()
+    {
+        if (Object *p = static_cast<Object *>(parent()))
+            p->emitSignal();
+    }
+
+    void emitSignal()
+    {
+        emit theSignal();
+    }
+
+signals:
+    void theSignal();
+};
+
+}
+#endif
+
+void tst_QObject::declarativeData()
+{
+#ifdef QT_BUILD_INTERNAL
+    QAbstractDeclarativeData::destroyed = QtDeclarative::destroyed;
+    QAbstractDeclarativeData::signalEmitted = QtDeclarative::signalEmitted;
+    QAbstractDeclarativeData::receivers = QtDeclarative::receivers;
+    QAbstractDeclarativeData::isSignalConnected = QtDeclarative::isSignalConnected;
+
+    QtDeclarative::Object p;
+    QObjectPrivate *priv = QObjectPrivate::get(&p);
+    priv->declarativeData = QtDeclarative::theData = new QAbstractDeclarativeData;
+
+    connect(&p, &QtDeclarative::Object::theSignal, &p, []{
+    });
+
+    QtDeclarative::Object *child = new QtDeclarative::Object;
+    child->setParent(&p);
+#endif
+}
+
 QTEST_MAIN(tst_QObject)
 #include "tst_qobject.moc"