Program: 161200
Project: 161200
Buggy source:
/** 
 * @param ipkey IPv4 or IPv6 address
 * @return Returns geolocation information for the specified address.
 */
@GET @Produces({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON}) public WhoisResources geolocation(@Context final HttpServletRequest request,@QueryParam(value="String_Node_Str") final String ipkey){
  List<Language> languages=null;
  Location location=null;
  if (ipkey == null) {
    throw new IllegalArgumentException("String_Node_Str");
  }
  try {
    final IpInterval interval=IpInterval.parse(ipkey);
    try {
      for (      IpEntry ipEntry : lookupEntries(interval)) {
        final RpslObject rpslObject=lookup(ipEntry);
        final RpslObject orgObject=lookupOrg(rpslObject);
        if (location == null) {
          location=getLocation(rpslObject);
          if (location == null) {
            location=getLocation(orgObject);
          }
        }
        if (languages == null) {
          languages=getLanguages(rpslObject);
          if (languages == null) {
            languages=getLanguages(orgObject);
          }
        }
        if (location != null && languages != null) {
          break;
        }
        if (isStopStatus(rpslObject)) {
          break;
        }
      }
    }
 catch (    EmptyResultDataAccessException ignored) {
    }
  }
 catch (  IllegalArgumentException e) {
    throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).entity("String_Node_Str").build());
  }
  if (languages == null && location == null) {
    throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).entity("String_Node_Str" + ipkey).build());
  }
  final WhoisResources whoisResources=new WhoisResources();
  whoisResources.setService(new Service(SERVICE_NAME));
  whoisResources.setGeolocationAttributes(new GeolocationAttributes(location,languages));
  whoisResources.setLink(new Link("String_Node_Str",RestServiceHelper.getRequestURL(request)));
  whoisResources.includeTermsAndConditions();
  return whoisResources;
}

Fixed version (ground truth):
/** 
 * @param ipkey IPv4 or IPv6 address
 * @return Returns geolocation information for the specified address.
 */
@GET @Produces({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON}) public WhoisResources geolocation(@Context final HttpServletRequest request,@QueryParam(value="String_Node_Str") final String ipkey){
  List<Language> languages=null;
  Location location=null;
  if (ipkey == null) {
    throw new IllegalArgumentException("String_Node_Str");
  }
  try {
    final IpInterval interval=IpInterval.parse(ipkey);
    try {
      for (      IpEntry ipEntry : lookupEntries(interval)) {
        final RpslObject rpslObject=lookup(ipEntry);
        final RpslObject orgObject=lookupOrg(rpslObject);
        if (location == null) {
          location=getLocation(rpslObject);
          if (location == null) {
            location=getLocation(orgObject);
          }
        }
        if (languages == null) {
          languages=getLanguages(rpslObject);
          if (languages == null) {
            languages=getLanguages(orgObject);
          }
        }
        if (location != null && languages != null) {
          break;
        }
        if (isStopStatus(rpslObject)) {
          break;
        }
      }
    }
 catch (    EmptyResultDataAccessException ignored) {
    }
  }
 catch (  IllegalArgumentException e) {
    throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).entity("String_Node_Str").build());
  }
  if (languages == null && location == null) {
    throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).entity("String_Node_Str" + ipkey).build());
  }
  final WhoisResources whoisResources=new WhoisResources();
  whoisResources.setService(new Service(SERVICE_NAME));
  whoisResources.setGeolocationAttributes(new GeolocationAttributes(location,languages));
  whoisResources.setLink(new Link("String_Node_Str",RestServiceHelper.getRequestURL(request).replaceFirst("String_Node_Str","String_Node_Str")));
  whoisResources.includeTermsAndConditions();
  return whoisResources;
}