[GHC] #1999: panic with GADT etc.

[GHC]

#1999: panic with GADT etc.
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 Reporter:  jeltsch   |          Owner:  chak       
     Type:  bug       |         Status:  reopened   
 Priority:  normal    |      Milestone:  6.10 branch
Component:  Compiler  |        Version:  6.9        
 Severity:  normal    |     Resolution:             
 Keywords:            |     Difficulty:  Unknown    
 Testcase:  T1999     |   Architecture:  x86        
       Os:  Linux     |  
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Comment (by chak):

 More precisely, the error only occurs with -dcore-lint (which is why I at
 first thought it was fixed).

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1999#comment:5>
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