instance Show (Ptr a)

[Hal Daume III]

The GHC docs claim Ptr a is an instance of Eq, Ord and Show, but it
doesn't actually seem to have a Show instance.  At least the docs should
reflect the fact that there is not instance; preferably, could someone
actually make an instance?  It would be nice (primarily for debugging
purposes) to be able to see where the allocations from malloc, newArray,
etc took place.

 - Hal

--
Hal Daume III

 "Computer science is no more about computers    | hdaume@isi.edu
  than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume