The upcoming futex syscalls will be easier to use (and to auto verify) if passed a pointer instead of an address, this allows for changing a `Primitive` to a `PrimitiveRef` by adding a `*` to the end.
The upcoming futex syscalls will be easier to use (and to auto verify) if passed a pointer instead of an address, this allows for changing a `Primitive` to a `PrimitiveRef` by adding a `*` to the end.