Program: 66081
Project: 66081
Buggy source:
public boolean marshalSingleValue(XPathFragment xPathFragment,MarshalRecord marshalRecord,Object object,Object value,AbstractSession session,NamespaceResolver namespaceResolver,MarshalContext marshalContext){
  if (value instanceof XMLRoot) {
    XMLRoot root=(XMLRoot)value;
    XPathFragment fragment=this.xmlField.getXPathFragment();
    while (fragment != null && !fragment.nameIsText) {
      if (fragment.getNextFragment() == null || fragment.getHasText()) {
        if (fragment.getLocalName().equals(root.getLocalName())) {
          String fragUri=fragment.getNamespaceURI();
          String namespaceUri=root.getNamespaceURI();
          if ((namespaceUri == null && fragUri == null) || (namespaceUri != null && fragUri != null && namespaceUri.equals(fragUri))) {
            return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
          }
        }
      }
      fragment=fragment.getNextFragment();
    }
  }
 else {
    if (value != null && xmlChoiceMapping.getClassToFieldMappings().get(value.getClass()) == this.xmlField) {
      return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
    }
 else     if (value != null) {
      List<XMLField> sourceFields=xmlChoiceMapping.getClassToSourceFieldsMappings().get(value.getClass());
      if (sourceFields != null && sourceFields.contains(this.xmlField)) {
        return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
      }
    }
  }
  return false;
}

Fixed version (ground truth):
public boolean marshalSingleValue(XPathFragment xPathFragment,MarshalRecord marshalRecord,Object object,Object value,AbstractSession session,NamespaceResolver namespaceResolver,MarshalContext marshalContext){
  if (value instanceof XMLRoot) {
    XMLRoot root=(XMLRoot)value;
    XPathFragment fragment=this.xmlField.getXPathFragment();
    while (fragment != null && !fragment.nameIsText) {
      if (fragment.getNextFragment() == null || fragment.getHasText()) {
        if (fragment.getLocalName().equals(root.getLocalName())) {
          String fragUri=fragment.getNamespaceURI();
          String namespaceUri=root.getNamespaceURI();
          if ((namespaceUri == null && fragUri == null) || (namespaceUri != null && fragUri != null && namespaceUri.equals(fragUri))) {
            return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
          }
        }
      }
      fragment=fragment.getNextFragment();
    }
  }
 else   if (value != null) {
    if (xmlChoiceMapping.getClassToFieldMappings().get(value.getClass()) == this.xmlField) {
      return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
    }
    List<XMLField> sourceFields=xmlChoiceMapping.getClassToSourceFieldsMappings().get(value.getClass());
    if (sourceFields != null && sourceFields.contains(this.xmlField)) {
      return this.choiceElementNodeValue.marshalSingleValue(xPathFragment,marshalRecord,object,value,session,namespaceResolver,marshalContext);
    }
  }
  return false;
}