[GHC] #13115: missing data instances for IntPtr and WordPtr in base

[GHC]

#13115: missing data instances for IntPtr and WordPtr in base
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        Reporter:  carter            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by sighingnow):

 Replying to [comment:3 RyanGlScott]:
 > Ah, OK. Thanks for clarifying!
 >
 > I don't think this would be too hard to accomplish, if someone wants to
 volunteer a patch.

 Hi, I am a newcomer to ghc-devs mailing list and I volunteer to fix this
 issue.

 Since base-4.10.0.0, the `IntPtr` and `WordPtr` are defined using
 `newtype` rather than `data` (as in base-4.9.1.0), is it enough for this
 issue that putting the following instance declarations to `Data.Data`
 module (with `GeneralizedNewtypeDeriving` enabled) ?

 {{{#!haskell
 deriving instance Data IntPtr

 deriving instance Data WordPtr
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13115#comment:4>
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