[GHC] #2219: GADT match fails to refine type variable

[GHC]

#2219: GADT match fails to refine type variable
-------------------------------------+--------------------------------------
 Reporter:  dolio                    |          Owner:  chak       
     Type:  bug                      |         Status:  new        
 Priority:  normal                   |      Milestone:  6.10 branch
Component:  Compiler (Type checker)  |        Version:  6.9        
 Severity:  normal                   |     Resolution:             
 Keywords:  gadt type family         |     Difficulty:  Unknown    
 Testcase:                           |   Architecture:  x86        
       Os:  Linux                    |  
-------------------------------------+--------------------------------------
Changes (by igloo):

  * difficulty:  => Unknown
  * milestone:  => 6.10 branch

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2219#comment:2>
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