Merge 110487

Source/WebCore/dom/Range.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1018 matching lines @@
     case Node::NOTATION_NODE:
     case Node::DOCUMENT_NODE:
     case Node::SHADOW_ROOT_NODE:
         ec = RangeException::INVALID_NODE_TYPE_ERR;
         return;
     default:
         break;
     }
 
     bool collapsed = m_start == m_end;
+    RefPtr<Node> container;
     if (startIsText) {
-        RefPtr<Text> newText = static_cast<Text*>(m_start.container())->splitText(m_start.offset(), ec);
+        container = m_start.container();
+        RefPtr<Text> newText = static_cast<Text*>(container.get())->splitText(m_start.offset(), ec);
         if (ec)
             return;
-        m_start.container()->parentNode()->insertBefore(newNode.release(), newText.get(), ec);
+        
+        container = m_start.container();
+        container->parentNode()->insertBefore(newNode.release(), newText.get(), ec);
         if (ec)
             return;
 
         // This special case doesn't seem to match the DOM specification, but it's currently required
         // to pass Acid3. We might later decide to remove this.
         if (collapsed)
             m_end.setToBeforeChild(newText.get());
     } else {
         RefPtr<Node> lastChild;
         if (collapsed)
             lastChild = (newNodeType == Node::DOCUMENT_FRAGMENT_NODE) ? newNode->lastChild() : newNode;
 
         int startOffset = m_start.offset();
-        m_start.container()->insertBefore(newNode.release(), m_start.container()->childNode(startOffset), ec);
+        container = m_start.container();
+        container->insertBefore(newNode.release(), container->childNode(startOffset), ec);
         if (ec)
             return;
 
         // This special case doesn't seem to match the DOM specification, but it's currently required
         // to pass Acid3. We might later decide to remove this.
         if (collapsed && numNewChildren)
             m_end.set(m_start.container(), startOffset + numNewChildren, lastChild.get());
     }
 }
 
@@ skipping 1013 matching lines @@
 
 void showTree(const WebCore::Range* range)
 {
     if (range && range->boundaryPointsValid()) {
         range->startContainer()->showTreeAndMark(range->startContainer(), "S", range->endContainer(), "E");
         fprintf(stderr, "start offset: %d, end offset: %d\n", range->startOffset(), range->endOffset());
     }
 }
 
 #endif