[GHC] #3406: 'impossible' happened while messing around with ScopedTypeVariables

[GHC]

#3406: 'impossible' happened while messing around with ScopedTypeVariables
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    Reporter:  RyanN               |        Owner:  simonpj
        Type:  bug                 |       Status:  new    
    Priority:  normal              |    Milestone:  6.12.1 
   Component:  Compiler            |      Version:  6.10.3 
    Severity:  normal              |   Resolution:         
    Keywords:  ScopedTypeVariabes  |   Difficulty:  Unknown
    Testcase:                      |           Os:  Linux  
Architecture:  x86_64 (amd64)      |  
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Changes (by igloo):

  * milestone:  => 6.12.1

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3406#comment:4>
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