yes I agree, and it's optimised out a stack location for ret so no stack goop to default to My point really is that there are two interesting paths here, one w

yes I agree, and it's optimised out a stack location for ret so no stack goop to default to My point really is that there are two interesting paths here, one where it's undefined and one where it's 0 ... I guess my point is that 0 is more than just 'convenient' because it's required for one of those paths