Program: 138414
Project: 138414
Buggy source:
@Override protected ReturnCode canSave(){
  ReturnCode canModRetCode=canModifyAnalysisName();
  if (!canModRetCode.isOk()) {
    return canModRetCode;
  }
  if (anaColumnCompareViewer.getColumnListA().size() != anaColumnCompareViewer.getColumnListB().size()) {
    return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
  }
  List<TdColumn> columnAList=new ArrayList<TdColumn>();
  List<TdColumn> columnBList=new ArrayList<TdColumn>();
  for (  RepositoryNode rd : anaColumnCompareViewer.getColumnListA()) {
    columnAList.add((TdColumn)((MetadataColumnRepositoryObject)rd.getObject()).getTdColumn());
  }
  for (  RepositoryNode rd : anaColumnCompareViewer.getColumnListB()) {
    columnBList.add((TdColumn)((MetadataColumnRepositoryObject)rd.getObject()).getTdColumn());
  }
  if (anaColumnCompareViewer.getColumnListA().size() > 0) {
    if (!ColumnHelper.isFromSameTable(columnAList) || !ColumnHelper.isFromSameTable(columnBList)) {
      return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
    }
    for (int i=0; i < anaColumnCompareViewer.getColumnListA().size(); i++) {
      TdColumn columnA=columnAList.get(i);
      TdColumn columnB=columnBList.get(i);
      ColumnSet ownerA=ColumnHelper.getColumnOwnerAsColumnSet(columnA);
      ColumnSet ownerB=ColumnHelper.getColumnOwnerAsColumnSet(columnB);
      int typeA=((TdColumn)columnA).getSqlDataType().getJavaDataType();
      int typeB=((TdColumn)columnB).getSqlDataType().getJavaDataType();
      if (!Java2SqlType.isGenericSameType(typeA,typeB)) {
        return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
      }
      if (!ColumnSetHelper.isFromSamePackage(ownerA,ownerB)) {
        return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
      }
    }
    List<TdColumn> allColumns=new ArrayList<TdColumn>();
    allColumns.addAll(columnAList);
    allColumns.addAll(columnBList);
  }
  return new ReturnCode(true);
}

Fixed version (ground truth):
@Override public ReturnCode canSave(){
  ReturnCode canModRetCode=canModifyAnalysisName();
  if (!canModRetCode.isOk()) {
    return canModRetCode;
  }
  if (anaColumnCompareViewer.getColumnListA().size() != anaColumnCompareViewer.getColumnListB().size()) {
    return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
  }
  List<TdColumn> columnAList=new ArrayList<TdColumn>();
  List<TdColumn> columnBList=new ArrayList<TdColumn>();
  for (  RepositoryNode rd : anaColumnCompareViewer.getColumnListA()) {
    columnAList.add((TdColumn)((MetadataColumnRepositoryObject)rd.getObject()).getTdColumn());
  }
  for (  RepositoryNode rd : anaColumnCompareViewer.getColumnListB()) {
    columnBList.add((TdColumn)((MetadataColumnRepositoryObject)rd.getObject()).getTdColumn());
  }
  if (anaColumnCompareViewer.getColumnListA().size() > 0) {
    if (!ColumnHelper.isFromSameTable(columnAList) || !ColumnHelper.isFromSameTable(columnBList)) {
      return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
    }
    for (int i=0; i < anaColumnCompareViewer.getColumnListA().size(); i++) {
      TdColumn columnA=columnAList.get(i);
      TdColumn columnB=columnBList.get(i);
      ColumnSet ownerA=ColumnHelper.getColumnOwnerAsColumnSet(columnA);
      ColumnSet ownerB=ColumnHelper.getColumnOwnerAsColumnSet(columnB);
      int typeA=((TdColumn)columnA).getSqlDataType().getJavaDataType();
      int typeB=((TdColumn)columnB).getSqlDataType().getJavaDataType();
      if (!Java2SqlType.isGenericSameType(typeA,typeB)) {
        return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
      }
      if (!ColumnSetHelper.isFromSamePackage(ownerA,ownerB)) {
        return new ReturnCode(DefaultMessagesImpl.getString("String_Node_Str"),false);
      }
    }
    List<TdColumn> allColumns=new ArrayList<TdColumn>();
    allColumns.addAll(columnAList);
    allColumns.addAll(columnBList);
  }
  return new ReturnCode(true);
}