Thanks for your explanation. It's good to know that is a harmless coding error which not affects the normal execution process. By the way, recently we're collecting more testcases, especially those triggering errors(crashes or logical errors) in old versions in order to find out more potential problems with our approach. We have noticed that TH3 is a useful tool for you developers to conduct testing works. So we are trying to find those TH3 testing modules like "orindex01.test". But I didn't find the file in the directory of SQLite. I wonder, how can we access these test data? Or are those data not public? Looking forward to your reply.