From: Joel VanderWerf <vjoel@...>
Date: 2003-07-21T08:47:46+09:00
Subject: Re: chaining comparisons

Jason Creighton wrote:
> How can that work when Fixnum is stored in VALUE? And that's another thing:
> VALUE is either an immediate value (Fixnum/true/false/nil) or a pointer to an
> object. Doesn't that mean there's only 31 bits (on 32 bit machins) available
> for the pionter? How can that work? I always thought that pointers would have
> to be able to cover the whole address space....

You don't need the low-order bit if all allocations are on even 
addresses (some archtectures even force this).