Merge 138863

Source/WebCore/xml/parser/XMLDocumentParserQt.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Holger Hans Peter Freyther
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 186 matching lines @@
     m_sawFirstElement = false;
 }
 
 void XMLDocumentParser::doEnd()
 {
 #if ENABLE(XSLT)
     if (m_sawXSLTransform) {
         document()->setTransformSource(adoptPtr(new TransformSource(m_originalSourceForTransform.toString())));
         document()->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets.
         document()->styleResolverChanged(RecalcStyleImmediately);
+
+        // styleResolverChanged() call can detach the parser and null out its document.
+        // In that case, we just bail out.
+        if (isDetached())
+            return;
+
         document()->setParsing(true);
         DocumentParser::stopParsing();
     }
 #endif
 
     if (m_stream.error() == QXmlStreamReader::PrematureEndOfDocumentError
         || (m_wroteText && !m_sawFirstElement && !m_sawXSLTransform && !m_sawError))
         handleError(XMLErrors::fatal, qPrintable(m_stream.errorString()), textPosition());
 }
 
@@ skipping 416 matching lines @@
         || (publicId == QLatin1String("-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN"))
         || (publicId == QLatin1String("-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"))
         || (publicId == QLatin1String("-//WAPFORUM//DTD XHTML Mobile 1.0//EN"))
        )
         setIsXHTMLDocument(true); // controls if we replace entities or not.
     if (!m_parsingFragment)
         document()->parserAppendChild(DocumentType::create(document(), name, publicId, systemId));
 
 }
 }