QtQml: Do not call signal handlers on half-deleted objects

Pick-to: 6.7 6.6
Fixes: QTBUG-121022
Change-Id: Icdefd6bef4906700d88eca47c09d0abe54f1eec9
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 35b7e6a535..6680dd1429 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -3910,7 +3910,25 @@ void tst_qqmlecmascript::scriptConnect()
         engine.clearSingletons();
         QMetaObject::invokeMethod(obj.data(), "mySignal", Qt::DirectConnection);
         QCOMPARE(obj.data()->property("a").toInt(), 1);
+    }
+
+    {
+        QQmlComponent component(&engine, testFileUrl("scriptConnect.deletion.qml"));
+
+        QScopedPointer<QObject> obj(component.create());
+        QVERIFY2(obj, qPrintable(component.errorString()));
+        QVERIFY(!obj.isNull());
+
+        QCOMPARE(obj->property("a"), 0);
+
+        QMetaObject::invokeMethod(obj.data(), "someSignal");
+        QCOMPARE(obj->property("a"), 1);
+
+        QCOMPARE(obj->property("b"), 0);
+        QMetaObject::invokeMethod(obj.data(), "destroyObj", Qt::DirectConnection);
 
+        QTRY_COMPARE(obj->property("b"), 1);
+        QCOMPARE(obj->property("a"), 1);
     }
 }