A colleague just posted code online for students for a practical with lots of bugs in it. Tomorrow the student will need to use this code to do analysis.

what types of bugs? obvious ones? if the students can learn from it he can say it was on purpose just put a disclaimer there for them to pay attention and fix it.

If not then your colleague needs to start taking his job seriously.

No the bugs are not obvious. A part of the code must find the maximum of a Fourier transform. The code does not take negative frequencies into account and there are index errors. So pretty hard to troubleshoot. And the class is not designed to learn them how to debug our code. That would take quite a lot of time of the students