Add test for cached getter lookup

Task-number: QTBUG-75335
Change-Id: I14480018f2429eb5ec744a50640642eee09ce3f3
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

2 files changed, 31 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlengine/data/CachedGetterLookup.qml b/tests/auto/qml/qqmlengine/data/CachedGetterLookup.qml
new file mode 100644
index 0000000000..1a2a7ff341
--- /dev/null
+++ b/tests/auto/qml/qqmlengine/data/CachedGetterLookup.qml
@@ -0,0 +1,20 @@
+import QtQuick 2.12
+
+QtObject {
+    Component.onCompleted: {
+        // create getter
+        var getFoo = function(o) { return o.foo; }
+
+        // create two diffrent shapes for x,y
+        var x = { foo:1 , bar:2 }
+        var y = { bar:2 , foo:1 }
+
+        // initialize inline cache with getFoo
+        getFoo(x);
+        getFoo(y);
+
+        // hit getter lookup with string "crash"
+        getFoo('crash');
+    }
+}
+
diff --git a/tests/auto/qml/qqmlengine/tst_qqmlengine.cpp b/tests/auto/qml/qqmlengine/tst_qqmlengine.cpp
index b9cb6b70d2..0cb6753020 100644
--- a/tests/auto/qml/qqmlengine/tst_qqmlengine.cpp
+++ b/tests/auto/qml/qqmlengine/tst_qqmlengine.cpp
@@ -81,6 +81,7 @@ private slots:
     void cppSignalAndEval();
     void singletonInstance();
     void aggressiveGc();
+    void cachedGetterLookup_qtbug_75335();
 
 public slots:
     QObject *createAQObjectForOwnershipTest ()
@@ -1056,6 +1057,16 @@ void tst_qqmlengine::aggressiveGc()
     qputenv("QV4_MM_AGGRESSIVE_GC", origAggressiveGc);
 }
 
+void tst_qqmlengine::cachedGetterLookup_qtbug_75335()
+{
+    QQmlEngine engine;
+    const QUrl testUrl = testFileUrl("CachedGetterLookup.qml");
+    QQmlComponent component(&engine, testUrl);
+    QVERIFY(component.isReady());
+    QScopedPointer<QObject> object(component.create());
+    QVERIFY(object != nullptr);
+}
+
 QTEST_MAIN(tst_qqmlengine)
 
 #include "tst_qqmlengine.moc"