[GHC] #7795: panic! the impossible happened

[GHC]

#7795: panic! the impossible happened
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    Reporter:  guest             |        Owner:              
        Type:  bug               |       Status:  closed      
    Priority:  normal            |    Component:  GHCi        
     Version:  7.4.2             |   Resolution:  duplicate   
    Keywords:                    |           Os:  Windows     
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
   Blockedby:                    |     Blocking:              
     Related:                    |  
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Changes (by monoidal):

  * status:  new => closed
  * resolution:  => duplicate


Comment:

 This is caused by `deriving (show)`, which should be `deriving (Show)`.
 The bug is already fixed in GHC 7.6 (see #5961 and
 http://hackage.haskell.org/trac/ghc/wiki/ReportABug).

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7795#comment:1>
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