64-bit Sparc support and -fstack-check

[Richard Kenner]

    > Can somebody who understands this please explain how this is supposed
    > to work?

    Understands what?  stack bias or stack check?

I meant stack bias.  I certainly understand stack check, since I wrote it!
The ideal of course would be somebody who understood stack bias and also
was familiar with the stack check code, but that's unlikely and the latter
is small anyway.