Program: 63550
Project: 63550
Buggy source:
public boolean marshal(XPathFragment xPathFragment,MarshalRecord marshalRecord,Object object,CoreAbstractSession session,NamespaceResolver namespaceResolver){
  if (xmlCompositeCollectionMapping.isReadOnly()) {
    return false;
  }
  Object collection=xmlCompositeCollectionMapping.getAttributeAccessor().getAttributeValueFromObject(object);
  if (null == collection) {
    AbstractNullPolicy wrapperNP=xmlCompositeCollectionMapping.getWrapperNullPolicy();
    if (wrapperNP != null && wrapperNP.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
      marshalRecord.nilSimple(namespaceResolver);
      return true;
    }
 else {
      return false;
    }
  }
  CoreContainerPolicy cp=getContainerPolicy();
  Object iterator=cp.iteratorFor(collection);
  if (null != iterator && cp.hasNext(iterator)) {
    XPathFragment groupingFragment=marshalRecord.openStartGroupingElements(namespaceResolver);
    marshalRecord.closeStartGroupingElements(groupingFragment);
  }
 else {
    return marshalRecord.emptyCollection(xPathFragment,namespaceResolver,xmlCompositeCollectionMapping.getWrapperNullPolicy() != null);
  }
  int size=marshalRecord.getCycleDetectionStack().size();
  if ((isInverseReference || xmlCompositeCollectionMapping.getInverseReferenceMapping() != null) && size >= 2) {
    Object owner=marshalRecord.getCycleDetectionStack().get(size - 2);
    try {
      if (cp.contains(owner,collection,session)) {
        return false;
      }
    }
 catch (    ClassCastException e) {
    }
  }
  marshalRecord.startCollection();
  iterator=cp.iteratorFor(collection);
  while (cp.hasNext(iterator)) {
    Object objectValue=cp.next(iterator,session);
    marshalSingleValue(xPathFragment,marshalRecord,object,objectValue,session,namespaceResolver,ObjectMarshalContext.getInstance());
  }
  marshalRecord.endCollection();
  return true;
}

Fixed version (ground truth):
public boolean marshal(XPathFragment xPathFragment,MarshalRecord marshalRecord,Object object,CoreAbstractSession session,NamespaceResolver namespaceResolver){
  if (xmlCompositeCollectionMapping.isReadOnly()) {
    return false;
  }
  Object collection=xmlCompositeCollectionMapping.getAttributeAccessor().getAttributeValueFromObject(object);
  if (null == collection) {
    AbstractNullPolicy wrapperNP=xmlCompositeCollectionMapping.getWrapperNullPolicy();
    if (wrapperNP != null && wrapperNP.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
      marshalRecord.nilSimple(namespaceResolver);
      return true;
    }
 else {
      return false;
    }
  }
  CoreContainerPolicy cp=getContainerPolicy();
  int size=marshalRecord.getCycleDetectionStack().size();
  if ((isInverseReference || xmlCompositeCollectionMapping.getInverseReferenceMapping() != null) && size >= 2) {
    Object owner=marshalRecord.getCycleDetectionStack().get(size - 2);
    try {
      if (cp.contains(owner,collection,session)) {
        return false;
      }
    }
 catch (    ClassCastException e) {
    }
  }
  Object iterator=cp.iteratorFor(collection);
  if (null != iterator && cp.hasNext(iterator)) {
    XPathFragment groupingFragment=marshalRecord.openStartGroupingElements(namespaceResolver);
    marshalRecord.closeStartGroupingElements(groupingFragment);
  }
 else {
    return marshalRecord.emptyCollection(xPathFragment,namespaceResolver,xmlCompositeCollectionMapping.getWrapperNullPolicy() != null);
  }
  marshalRecord.startCollection();
  iterator=cp.iteratorFor(collection);
  while (cp.hasNext(iterator)) {
    Object objectValue=cp.next(iterator,session);
    marshalSingleValue(xPathFragment,marshalRecord,object,objectValue,session,namespaceResolver,ObjectMarshalContext.getInstance());
  }
  marshalRecord.endCollection();
  return true;
}