I don't know, I would assume it works but I would not expect it to be free of bugs. But that is the baseline for code, being correct - up to some bugs - is the absolute minimum requirement, code quality starts from there - is it efficient, is it secure, is it understandable, is it maintainable, ...
So do you expect it not to be free of bugs because you've run a comprehensive test on it, read all of the code yourself or are you just concluding that because you know it was generated by an LLM?