gcc.c-torture/unsorted/pass.c: what is it supposed to test?

[law@redhat.com]

In message <1077906408.15336.80.camel@localhost.localdomain>, Diego Novillo wri
tes:
 >On Fri, 2004-02-27 at 13:17, law@redhat.com wrote:
 >
 >> To do anything "bad" with such a node it would have to be casted back to
 >> a pointer, then dereferenced.  If that happens then I'm pretty sure all
 >> the right things would happen.
 >> 
 >Ah, but the points-to chaser will see a pointer being assigned into a
 >non-pointer scalar and throw its hands up, saying "I don't know what
 >you're pointing to".  TBAA will then DTRT based on the types, but we
 >will lose precision.  Not the end of the world, of course.
I don't mind losing precision in this case -- I would expect that 
casting pointers to integers is done a lot less often these days
than it used to be.

jeff