Program: 77256
Project: 77256
Buggy source:
/** 
 * @param modelDataSet
 * @param dteDataSet
 * @return
 */
private Iterator populateParameter(DataSetHandle modelDataSet,BaseDataSetDesign dteDataSet){
  HashMap paramBindingCandidates=new HashMap();
  Iterator elmtIter=modelDataSet.parametersIterator();
  if (elmtIter != null) {
    while (elmtIter.hasNext()) {
      DataSetParameterHandle modelParam=(DataSetParameterHandle)elmtIter.next();
      dteDataSet.addParameter(newParam(modelParam));
      if (modelParam.isInput()) {
        String defaultValueExpr=null;
        if (modelParam instanceof OdaDataSetParameterHandle && ((OdaDataSetParameterHandle)modelParam).getParamName() != null) {
          defaultValueExpr=ExpressionUtil.createParameterExpression(((OdaDataSetParameterHandle)modelParam).getParamName());
        }
 else         defaultValueExpr=modelParam.getDefaultValue();
        if (defaultValueExpr != null)         paramBindingCandidates.put(modelParam.getName(),defaultValueExpr);
      }
    }
  }
  elmtIter=modelDataSet.paramBindingsIterator();
  if (elmtIter != null) {
    while (elmtIter.hasNext()) {
      ParamBindingHandle modelParamBinding=(ParamBindingHandle)elmtIter.next();
      paramBindingCandidates.put(modelParamBinding.getParamName(),modelParamBinding.getExpression());
    }
  }
  if (paramBindingCandidates.size() > 0) {
    elmtIter=paramBindingCandidates.keySet().iterator();
    while (elmtIter.hasNext()) {
      Object paramName=elmtIter.next();
      assert(paramName != null && paramName instanceof String);
      String expression=(String)paramBindingCandidates.get(paramName);
      dteDataSet.addInputParamBinding(newInputParamBinding((String)paramName,expression));
    }
  }
  return elmtIter;
}

Fixed version (ground truth):
/** 
 * @param modelDataSet
 * @param dteDataSet
 * @return
 */
private Iterator populateParameter(DataSetHandle modelDataSet,BaseDataSetDesign dteDataSet){
  HashMap paramBindingCandidates=new HashMap();
  Iterator elmtIter=modelDataSet.parametersIterator();
  if (elmtIter != null) {
    while (elmtIter.hasNext()) {
      DataSetParameterHandle modelParam=(DataSetParameterHandle)elmtIter.next();
      dteDataSet.addParameter(newParam(modelParam));
      if (modelParam.isInput()) {
        String defaultValueExpr=null;
        if (modelParam instanceof OdaDataSetParameterHandle && ((OdaDataSetParameterHandle)modelParam).getParamName() != null) {
          defaultValueExpr=ExpressionUtil.createJSParameterExpression(((OdaDataSetParameterHandle)modelParam).getParamName());
        }
 else         defaultValueExpr=modelParam.getDefaultValue();
        if (defaultValueExpr != null)         paramBindingCandidates.put(modelParam.getName(),defaultValueExpr);
      }
    }
  }
  elmtIter=modelDataSet.paramBindingsIterator();
  if (elmtIter != null) {
    while (elmtIter.hasNext()) {
      ParamBindingHandle modelParamBinding=(ParamBindingHandle)elmtIter.next();
      paramBindingCandidates.put(modelParamBinding.getParamName(),modelParamBinding.getExpression());
    }
  }
  if (paramBindingCandidates.size() > 0) {
    elmtIter=paramBindingCandidates.keySet().iterator();
    while (elmtIter.hasNext()) {
      Object paramName=elmtIter.next();
      assert(paramName != null && paramName instanceof String);
      String expression=(String)paramBindingCandidates.get(paramName);
      dteDataSet.addInputParamBinding(newInputParamBinding((String)paramName,expression));
    }
  }
  return elmtIter;
}