DO NOT REPLY [Bug 6176] New: - Processing instruction cannot precede doctype

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=6176

Processing instruction cannot precede doctype

           Summary: Processing instruction cannot precede doctype
           Product: Xerces2-J
           Version: 2.0.0
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Serialization
        AssignedTo: xerces-j-dev@xml.apache.org
        ReportedBy: paul@prescod.net


Given: 

    public static void main(String []args) throws SAXException{
        XMLSerializer serializer = new XMLSerializer();
        serializer.setOutputByteStream(System.out);

        serializer.startDocument();
        serializer.processingInstruction("foo", "bar");
        serializer.startDTD("foo", "bar", "baz");
        serializer.startElement("foo", "bar", "bar", null);
        serializer.endElement("foo", "bar", "bar");
        serializer.endDocument();
    }

Xerces goes to a great deal of effort to make the processing instruction appear 
AFTER the doctype (serializePreRoot etc.). But why is this so? It is perfectly 
legal in XML for a processing instruction to proceed the doctype!

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