[GHC] #12837: KnownNat and KnownSymbol should be abstract

[GHC]

#12837: KnownNat and KnownSymbol should be abstract
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        Reporter:  adamgundry        |                Owner:  sean
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC accepts       |  Unknown/Multiple
  invalid program                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mpickering):

 No problems so far Sean! If you need any help then feel free to ask here
 or on the IRC channel.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12837#comment:3>
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