You are right. There's really no way they can reliably detect where the code came from. In fact, it should be pretty difficult to generally, but unfortunately

You are right. There's really no way they can reliably detect where the code came from. In fact, it should be pretty difficult to generally, but unfortunately, this clause will scare off business built around this. There's also PreScheme, which is one of my favorites. It's subset of Scheme which simply generates a few C functions that use a bunch of stack variables and gotos without any runtime.