Don't double-add item change listeners.

When a Repeater was used as the child of an Item binding to childrenRect,
the item change listener was being added twice for the items created
by the Repeater.

Task-number: QTBUG-12722
(cherry picked from commit 6feb5b75ce96aeeefee189af003949db8c031519)

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp b/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
index d76d360..25ca157 100644
--- a/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
+++ b/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
@@ -75,6 +75,7 @@ private slots:
     void childrenRect();
     void childrenRectBug();
     void childrenRectBug2();
+    void childrenRectBug3();
 
     void childrenProperty();
     void resourcesProperty();
@@ -780,6 +781,17 @@ void tst_QDeclarativeItem::childrenRectBug2()
     delete canvas;
 }
 
+// QTBUG-12722
+void tst_QDeclarativeItem::childrenRectBug3()
+{
+    QDeclarativeView *canvas = new QDeclarativeView(0);
+    canvas->setSource(QUrl::fromLocalFile(SRCDIR "/data/childrenRectBug3.qml"));
+    canvas->show();
+
+    //don't crash on delete
+    delete canvas;
+}
+
 template<typename T>
 T *tst_QDeclarativeItem::findItem(QGraphicsObject *parent, const QString &objectName)
 {