[qsort]

This isn't how oral exams work, though.

Nobody expects you to be 100% on point, it's just impossible; it's not like the spoken variant of a written exam. The kind of "correction" I mean is more along the lines of what would happen during a normal conversation. Imagine I was asked to write a recursive algorithm and I forgot the base case. It's not a fundamental mistake, but the professor might interject to make sure I actually know about termination, inductive sets, etc., which is actually great if you understand the material deeply, because it gives you a chance to prove that you actually just forgot.

Obviously this is assuming good faith by the examiner, but if you aren't willing to assume that, there aren't very many examination formats that are going to work very well.

[AshamedCaptain]

Is not a question about good faith or not. He may be showing completely unintentional bias. But the point is that the oral one gives you a shitton more opportunities to play that bias. If you even try to say that the oral exam is just "a normal informal conversation" rather than something following a very strict protocol you might as well just give up any appearance of fairness. How much role bias would play on such a conversation is just outside the scale.