1 files changed, 20 insertions, 1 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 45627f6..709066c 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1511,6 +1511,8 @@ const QGraphicsObject *QGraphicsItem::toGraphicsObject() const
     the parent. You should not \l{QGraphicsScene::addItem()}{add} the
     item to the scene yourself.
 
+    Calling this function on an item that is an ancestor of \a parent have undefined behaviour.
+
     \sa parentItem(), childItems()
 */
 void QGraphicsItem::setParentItem(QGraphicsItem *parent)
@@ -4735,7 +4737,7 @@ bool QGraphicsItem::isObscuredBy(const QGraphicsItem *item) const
 {
     if (!item)
         return false;
-    return QGraphicsSceneBspTreeIndexPrivate::closestItemFirst_withoutCache(item, this)
+    return qt_closestItemFirst(item, this)
         && qt_QGraphicsItem_isObscured(this, item, boundingRect());
 }
 
@@ -10740,6 +10742,23 @@ QDebug operator<<(QDebug debug, QGraphicsItem *item)
     return debug;
 }
 
+QDebug operator<<(QDebug debug, QGraphicsObject *item)
+{
+    if (!item) {
+        debug << "QGraphicsObject(0)";
+        return debug;
+    }
+
+    debug.nospace() << item->metaObject()->className() << '(' << (void*)item;
+    if (!item->objectName().isEmpty())
+        debug << ", name = " << item->objectName();
+    debug.nospace() << ", parent = " << ((void*)item->parentItem())
+          << ", pos = " << item->pos()
+          << ", z = " << item->zValue() << ", flags = "
+          << item->flags() << ')';
+    return debug.space();
+}
+
 QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemChange change)
 {
     const char *str = "UnknownChange";