Portable Pointers

[Charles Lambert]

Apropos the "NULL pointer" argument chip at ateng.ateng.com (Chip Salzenberg) writes:
>  After all, bitwise representation is not the only issue.  Sometimes
> pointers are _larger_ than ints!

Worse than that:  during a rather arcane discussion in comp.std.c I read that
pointers to different objects may be different sizes.  Forgetting the
LONG/SHORT NEAR/FAR perversion of Intel memory models,  does anyone know how
widespread this kind of implementation is and what are the foremost systems
involved?

Charlie