Program: 66961
Project: 66961
Buggy source:
public boolean marshal(MarshalRecord marshalRecord,Object object,AbstractSession session,NamespaceResolver namespaceResolver,org.eclipse.persistence.oxm.XMLMarshaller marshaller,MarshalContext marshalContext){
  if ((null == marshalNodeValue) || marshalNodeValue.isMarshalOnlyNodeValue()) {
    marshalRecord.addGroupingElement(this);
    XPathNode xPathNode;
    boolean hasValue=false;
    if (null != attributeChildren) {
      int size=attributeChildren.size();
      for (int x=0; x < size; x++) {
        xPathNode=(XPathNode)attributeChildren.get(x);
        hasValue=xPathNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,ObjectMarshalContext.getInstance()) || hasValue;
      }
    }
    if (anyAttributeNode != null) {
      hasValue=anyAttributeNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,ObjectMarshalContext.getInstance()) || hasValue;
    }
    if (null != nonAttributeChildren) {
      int size=marshalContext.getNonAttributeChildrenSize(this);
      for (int x=0; x < size; x++) {
        xPathNode=(XPathNode)marshalContext.getNonAttributeChild(x,this);
        MarshalContext childMarshalContext=marshalContext.getMarshalContext(x);
        hasValue=xPathNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,childMarshalContext) || hasValue;
      }
    }
    if (hasValue) {
      marshalRecord.endElement(this.getXPathFragment(),namespaceResolver);
    }
 else {
      marshalRecord.removeGroupingElement(this);
    }
    return hasValue;
  }
 else {
    return marshalContext.marshal(marshalNodeValue,xPathFragment,marshalRecord,object,session,namespaceResolver);
  }
}

Fixed version (ground truth):
public boolean marshal(MarshalRecord marshalRecord,Object object,AbstractSession session,NamespaceResolver namespaceResolver,XMLMarshaller marshaller,MarshalContext marshalContext){
  if ((null == marshalNodeValue) || marshalNodeValue.isMarshalOnlyNodeValue()) {
    marshalRecord.addGroupingElement(this);
    boolean hasValue=false;
    if (null != attributeChildren) {
      for (int x=0, size=attributeChildren.size(); x < size; x++) {
        XPathNode xPathNode=attributeChildren.get(x);
        hasValue=xPathNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,ObjectMarshalContext.getInstance()) || hasValue;
      }
    }
    if (anyAttributeNode != null) {
      hasValue=anyAttributeNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,ObjectMarshalContext.getInstance()) || hasValue;
    }
    if (null != nonAttributeChildren) {
      for (int x=0, size=marshalContext.getNonAttributeChildrenSize(this); x < size; x++) {
        XPathNode xPathNode=(XPathNode)marshalContext.getNonAttributeChild(x,this);
        MarshalContext childMarshalContext=marshalContext.getMarshalContext(x);
        hasValue=xPathNode.marshal(marshalRecord,object,session,namespaceResolver,marshaller,childMarshalContext) || hasValue;
      }
    }
    if (hasValue) {
      marshalRecord.endElement(xPathFragment,namespaceResolver);
    }
 else {
      marshalRecord.removeGroupingElement(this);
    }
    return hasValue;
  }
 else {
    return marshalContext.marshal(marshalNodeValue,xPathFragment,marshalRecord,object,session,namespaceResolver);
  }
}