Program: 65735
Project: 65735
Buggy source:
/** 
 * INTERNAL:
 */
private void openStartElement(XPathFragment xPathFragment,NamespaceResolver namespaceResolver,boolean addOpenBrace){
  try {
    Level position=null;
    if (levels.isEmpty()) {
      levels.push(new Level(true));
    }
 else {
      position=levels.peek();
      levels.push(new Level(true));
      if (position.isFirst()) {
        position.setFirst(false);
      }
 else {
        writer.write(',');
        writer.write(' ');
      }
    }
    if (position == null || !position.isCollection() || position.isEmptyCollection()) {
      super.openStartElement(xPathFragment,namespaceResolver);
      isStartElementOpen=true;
      writer.write('"');
      if (xPathFragment.isAttribute() && attributePrefix != null) {
        writer.write(attributePrefix);
      }
      writer.write(xPathFragment.getLocalName());
      writer.write("String_Node_Str");
      if ((xPathFragment.getNextFragment() == null || xPathFragment.getNextFragment().nameIsText()) && position != null && position.isCollection()) {
        writer.write('[');
      }
      if (position != null && position.isEmptyCollection()) {
        position.setEmptyCollection(false);
      }
    }
    if (addOpenBrace) {
      XPathFragment next=xPathFragment.getNextFragment();
      if (!(xPathFragment.isAttribute() || xPathFragment.nameIsText() || (next != null && next.nameIsText()))) {
        writer.write('{');
      }
    }
  }
 catch (  IOException e) {
    throw XMLMarshalException.marshalException(e);
  }
}

Fixed version (ground truth):
/** 
 * INTERNAL:
 */
private void openStartElement(XPathFragment xPathFragment,NamespaceResolver namespaceResolver,boolean addOpenBrace){
  try {
    Level position=null;
    if (levels.isEmpty()) {
      levels.push(new Level(true));
    }
 else {
      position=levels.peek();
      levels.push(new Level(true));
      if (position.isFirst()) {
        position.setFirst(false);
      }
 else {
        writer.write(',');
        writer.write(' ');
      }
    }
    if (position == null || !position.isCollection() || position.isEmptyCollection()) {
      super.openStartElement(xPathFragment,namespaceResolver);
      isStartElementOpen=true;
      writer.write('"');
      if (xPathFragment.isAttribute() && attributePrefix != null) {
        writer.write(attributePrefix);
      }
      if (namespaceAware) {
        if (xPathFragment.getNamespaceURI() != null) {
          String prefix=null;
          if (namespaces != null) {
            prefix=namespaces.resolveNamespaceURI(xPathFragment.getNamespaceURI());
          }
 else           if (namespaceResolver != null) {
            prefix=namespaceResolver.resolveNamespaceURI(xPathFragment.getNamespaceURI());
          }
          if (prefix != null && !prefix.equals(XMLConstants.EMPTY_STRING)) {
            writer.write(prefix);
            writer.write(namespaceSeperator);
          }
        }
      }
      writer.write(xPathFragment.getLocalName());
      writer.write("String_Node_Str");
      if ((xPathFragment.getNextFragment() == null || xPathFragment.getNextFragment().nameIsText()) && position != null && position.isCollection()) {
        writer.write('[');
      }
      if (position != null && position.isEmptyCollection()) {
        position.setEmptyCollection(false);
      }
    }
    if (addOpenBrace) {
      XPathFragment next=xPathFragment.getNextFragment();
      if (!(xPathFragment.isAttribute() || xPathFragment.nameIsText() || (next != null && next.nameIsText()))) {
        writer.write('{');
      }
    }
  }
 catch (  IOException e) {
    throw XMLMarshalException.marshalException(e);
  }
}