QQuickItem: Guard against null deref in transformations

Change-Id: Ieb14322c104d816842e04e521b556bfc11855f1c
Task-number: QTBUG-67024
Reviewed-by: Robin Burchell <robin.burchell@crimson.no>
Reviewed-by: Michael Brasser <michael.brasser@live.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/auto/quick/qquickitem2/data/mapCoordinates.qml b/tests/auto/quick/qquickitem2/data/mapCoordinates.qml
index b410b445c5..596dedab90 100644
--- a/tests/auto/quick/qquickitem2/data/mapCoordinates.qml
+++ b/tests/auto/quick/qquickitem2/data/mapCoordinates.qml
@@ -39,6 +39,11 @@ Item {
         Item { id: itemB; objectName: "itemB"; x: 100; y: 100 }
     }
 
+    Component {
+        id: itemComponent
+        Item { x: 150; y: 150 }
+    }
+
     function mapAToB(x, y) {
         var pos = itemA.mapToItem(itemB, x, y)
         return Qt.point(pos.x, pos.y)
@@ -69,6 +74,18 @@ Item {
         return Qt.point(pos.x, pos.y)
     }
 
+    function mapOrphanToGlobal(x, y) {
+        var obj = itemComponent.createObject(null);
+        var pos = obj.mapToGlobal(x, y)
+        return Qt.point(pos.x, pos.y)
+    }
+
+    function mapOrphanFromGlobal(x, y) {
+        var obj = itemComponent.createObject(null);
+        var pos = obj.mapFromGlobal(x, y)
+        return Qt.point(pos.x, pos.y)
+    }
+
     function checkMapAToInvalid(x, y) {
         try {
             itemA.mapToItem(1122, x, y)