1 files changed, 16 insertions, 0 deletions
diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 9198d3bebf..3c3a2a7a99 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -239,6 +239,7 @@ private slots:
     void eval();
     void function();
     void topLevelGeneratorFunction();
+    void generatorCrashNewProperty();
     void qtbug_10696();
     void qtbug_11606();
     void qtbug_11600();
@@ -6489,6 +6490,21 @@ void tst_qqmlecmascript::topLevelGeneratorFunction()
     QCOMPARE(it.property("next").callWithInstance(it).property("value").toInt(), 1);
 }
 
+// QTBUG-91491
+void tst_qqmlecmascript::generatorCrashNewProperty()
+{
+    QQmlEngine engine;
+    QQmlComponent component(&engine, testFileUrl("generatorCrashNewProperty.qml"));
+
+    QScopedPointer<QObject> o(component.create());
+
+    QVERIFY2(o != nullptr, qPrintable(component.errorString()));
+
+    QCOMPARE(o->property("a").toInt(), 42);
+    QCOMPARE(o->property("b").toInt(), 12);
+    QCOMPARE(o->property("c").toInt(), 42);
+}
+
 // Test the "Qt.include" method
 void tst_qqmlecmascript::include()
 {