Buggy sbspace() on 64bit builds?

[Simon J. Gerraty]

Bruce Evans <brde at optusnet.com.au> wrote:
> In the current version, changing the local variables from long to int
> would restore the delicate conversions, slightly more obfuscated by
> using redundant explicit assignments instead of redundant explicit casts.

And *this* is why I asked Anu to send the question - rather than just
change it to int ;-)

Using int addresses the immediate issue, but the bug is worth discussion
and perhaps broader consideration.

Thanks for the analysis.
--sjg