[GHC] #9260: Unnecessary error using GHC.TypeLits

[GHC]

#9260: Unnecessary error using GHC.TypeLits
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        Reporter:  Iceland_jack      |            Owner:
            Type:  bug               |           Status:  new
        Priority:  low               |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:  type lits, data
Operating System:  Linux             |  kinds, error message
 Type of failure:  Incorrect         |     Architecture:  Unknown/Multiple
  warning at compile-time            |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by goldfire):

 The first error you report is certainly a bug. But, the second one is
 legitimate -- the type `Fin 1` has only 1 inhabitant, `Fzero`.

 Confirmed reproducible in HEAD.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9260#comment:2>
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