LUT hazards

Thanks again Brad.

That's quite interesting. In my case it's about an async reset, and not about a clock. In this case it is then ok as long as you have only two input signals, but it might be dangerous for more.

With only two inputs, if both happen to change at (about) the same time, then it means that the output would change even with an ideal LUT (that doesn't ever glitch). So you don't care.

But if you are combining 3 inputs where you want the async reset output to be active only when all the inputs are active, then you might get a glitch even when one of them was always inactive. Interesting.