[MLton] MLton rules! (was: filedes = int)

[Stephen Weeks]

> I think that you REALLY want to have the full 64-bits of address
> space.  

We will certainly give that option.

> If you don't, you might run into other problems like: where shared
> libraries live in the address space; where files get mapped in
> (which, after all, could be huge and also spread out so that they
> can grow); etc.

I don't see why it would be so hard for the OS to find us a contiguous
16GB somewhere.  After all, it does have 64 bits of address space.