[GHC] #1954: Incorrect "Defined but not used" warning when using GeneralizedNewtypeDeriving

[GHC]

#1954: Incorrect "Defined but not used" warning when using
GeneralizedNewtypeDeriving
----------------------+-----------------------------------------------------
 Reporter:  magnus    |          Owner:             
     Type:  bug       |         Status:  new        
 Priority:  normal    |      Milestone:  6.10 branch
Component:  Compiler  |        Version:  6.8.1      
 Severity:  normal    |     Resolution:             
 Keywords:            |     Difficulty:  Unknown    
 Testcase:            |   Architecture:  Unknown    
       Os:  Unknown   |  
----------------------+-----------------------------------------------------
Changes (by igloo):

  * milestone:  6.8 branch => 6.10 branch

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1954#comment:3>
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