darwin, NT, and linux all do this. that is the majority of systems. it's not a silly optimisation at all. at worst, it performs exactly as well as malloc. at be

darwin, NT, and linux all do this. that is the majority of systems. it's not a silly optimisation at all. at worst, it performs exactly as well as malloc. at best, it saves allocating memory. which in the mobile platform (again, most of computing), is a big deal.