Not exactly, or at least, not in the same way as Unchecked_Deallocation. There are no memory safety issues with Drop. There are a few times when you need to be a little careful so that you don't get bad behavior: recursive Drop can stack overflow (which is caught and aborts), Drop while Dropping aborts which may not be what you want, if you've written unsafe code, you need to be careful with Drop because what is valid and what isn't may be a bit more tricky since it's effectively a callback.