Merge 116545

Source/WebCore/editing/ReplaceSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1281 matching lines @@
         return false;
 
     // FIXME: Would be nice to handle smart replace in the fast path.
     if (m_smartReplace || fragment.hasInterchangeNewlineAtStart() || fragment.hasInterchangeNewlineAtEnd())
         return false;
 
     // e.g. when "bar" is inserted after "foo" in <div><u>foo</u></div>, "bar" should not be underlined.
     if (nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(endingSelection().start()))
         return false;
 
-    Node* nodeAfterInsertionPos = endingSelection().end().downstream().anchorNode();
+    RefPtr<Node> nodeAfterInsertionPos = endingSelection().end().downstream().anchorNode();
     Text* textNode = toText(fragment.firstChild());
     // Our fragment creation code handles tabs, spaces, and newlines, so we don't have to worry about those here.
 
     Position start = endingSelection().start();
     Position end = replaceSelectedTextInNode(textNode->data());
     if (end.isNull())
         return false;
 
-    if (nodeAfterInsertionPos && nodeAfterInsertionPos->hasTagName(brTag) && shouldRemoveEndBR(nodeAfterInsertionPos, positionBeforeNode(nodeAfterInsertionPos)))
-        removeNodeAndPruneAncestors(nodeAfterInsertionPos);
+    if (nodeAfterInsertionPos && nodeAfterInsertionPos->parentNode() && nodeAfterInsertionPos->hasTagName(brTag)
+        && shouldRemoveEndBR(nodeAfterInsertionPos.get(), positionBeforeNode(nodeAfterInsertionPos.get())))
+        removeNodeAndPruneAncestors(nodeAfterInsertionPos.get());
 
     VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);
 
     setEndingSelection(selectionAfterReplace);
 
     return true;
 }
 
 } // namespace WebCore