patch applied (ghc): Make ticky work, at least partly, on 64-bit machines

[Simon Marlow]

Simon Peyton Jones wrote:
>   Really there should be some complaint from the code generators, not simply
>   a seg fault.

There is now such a check:

Wed Apr  4 16:50:01 BST 2007  Simon Marlow <simonmar at microsoft.com>
   * add a safety net to avoid generating bogus code

Cheers,
	Simon