Re: [Qemu-devel] [PATCH, RFC] More than 2G of memory on 64-bit hosts

["Blue Swirl" <blauwirbel@gmail.com>]

On 6/26/07, Paul Brook <paul@codesourcery.com> wrote:
> The story behind this is that ISO C89 requires that "long" be at least as big
> as a pointer (ie. "void *"). The actual requirement is that it be possible to
> store a pointer in a standard integer type, and "long" is the largest
> standard integer type.
>
> Unfortunately C99 relaxed this requirement, and allowed abominations like the
> win64 ABI.
>
> This means you have a choice: Write standard conforming code (long) that works
> on all known systems except win64, or use features that do't exist on many
> systems. IIRC C99 types like intptr_t are not supported on several fairly
> common unix systems.

In that case I'll vote for unsigned long. I'd pass the issue to those
doing a win64 port, if ever that happens.