Program: 78919
Project: 78919
Buggy source:
/** 
 * Checks whether the element can take the given user property definition.
 * @param prop the user property definition
 * @throws UserPropertyException if the element is not allowed to have user property or the user property definition is invalid, or if the value of the user-defined choice is invalid for the type of user property definition, or the user property definition is inconsistent.
 */
private void checkUserPropertyDefn(UserPropertyDefn prop) throws UserPropertyException {
  String name=prop.getName();
  if (!element.getDefn().allowsUserProperties())   throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_USER_PROP_DISALLOWED);
  if (StringUtil.isBlank(name))   throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_NAME_REQUIRED);
  MetaDataDictionary dd=MetaDataDictionary.getInstance();
  if (dd.getPropertyType(prop.getTypeCode()) == null || prop.getTypeCode() == PropertyType.ELEMENT_REF_TYPE || prop.getTypeCode() == PropertyType.STRUCT_TYPE)   throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_INVALID_TYPE);
  String msgID=prop.getDisplayNameID();
  String displayName=prop.getDisplayName();
  if (!StringUtil.isBlank(msgID)) {
    displayName=module.getMessage(msgID);
    if (StringUtil.isBlank(displayName))     throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_INVALID_DISPLAY_ID);
  }
  if (prop.getTypeCode() == PropertyType.CHOICE_TYPE) {
    IChoiceSet choices=prop.getChoices();
    if (choices == null || choices.getChoices().length == 0)     throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_MISSING_CHOICES);
  }
  if (prop.hasChoices()) {
    IChoiceSet choiceSet=prop.getChoices();
    IChoice[] choices=choiceSet.getChoices();
    for (int i=0; i < choices.length; i++) {
      UserChoice choice=(UserChoice)choices[i];
      Object value=choice.getValue();
      if (StringUtil.isBlank(choice.getName())) {
        throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_CHOICE_NAME_REQUIRED);
      }
      if (value == null)       throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_CHOICE_VALUE_REQUIRED);
      if (prop.getTypeCode() != PropertyType.CHOICE_TYPE) {
        try {
          value=prop.validateValue(module,value);
        }
 catch (        PropertyValueException e) {
          throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_INVALID_CHOICE_VALUE);
        }
      }
    }
  }
  try {
    prop.build();
  }
 catch (  MetaDataException e) {
    throw new UserPropertyException(element,name,UserPropertyException.DESIGN_EXCEPTION_INVALID_DEFINITION,e);
  }
}

Fixed version (ground truth):
/** 
 * Checks whether the element can take the given user property definition.
 * @param prop the user property definition
 * @throws UserPropertyException if the element is not allowed to have user property or the user property definition is invalid, or if the value of the user-defined choice is invalid for the type of user property definition, or the user property definition is inconsistent.
 */
private void checkUserPropertyDefn(UserPropertyDefn prop) throws UserPropertyException {
}