[GHC] #7894: Crash on :i M.->

[GHC]

#7894: Crash on :i M.->
-----------------------------+----------------------------------------------
Reporter:  monoidal          |          Owner:                   
    Type:  bug               |         Status:  new              
Priority:  normal            |      Component:  Compiler (Parser)
 Version:  7.6.3             |       Keywords:                   
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple 
 Failure:  GHCi crash        |      Blockedby:                   
Blocking:                    |        Related:                   
-----------------------------+----------------------------------------------
 {{{
 Prelude> :i M.->
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.7.20130427 for x86_64-unknown-linux):
         isDataOcc: check me ->
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7894>
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