[GHC] #4233: GHC internal error: `w' is not in scope during type checking, but it passed the renamer

[GHC]

#4233: GHC internal error: `w' is not in scope during type checking, but it passed
the renamer
---------------------------------+------------------------------------------
    Reporter:  lilac             |       Owner:                    
        Type:  bug               |      Status:  new               
    Priority:  normal            |   Component:  Template Haskell  
     Version:  6.12.1            |    Keywords:                    
    Testcase:                    |   Blockedby:                    
          Os:  Unknown/Multiple  |    Blocking:                    
Architecture:  Unknown/Multiple  |     Failure:  Compile-time crash
---------------------------------+------------------------------------------

Comment(by lilac):

 Simpler testcase:
 {{{
 w = varT (mkName "w")
 f = [t|$w|]
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4233#comment:1>
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