Greg A. Woods writes:

>There are certainly modern machines which can address that much and more
>physical memory, albiet only 64-bit machines IIRC, and if I'm not
>mistaken sizeof(int) == 8 on NetBSD on all of them.....

Are you sure this isn't sizeof(long)--and sizeof(int) is 4 bytes?
At least that's the situation I have observed on some commercial
64-bit systems, it would surprise me, if gcc handled that in a
different way on these architectures...

--mkb