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

[GHC]

#1954: Incorrect "Defined but not used" warning when using
GeneralizedNewtypeDeriving
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 Reporter:  magnus    |          Owner:            
     Type:  bug       |         Status:  new       
 Priority:  normal    |      Milestone:  6.8 branch
Component:  Compiler  |        Version:  6.8.1     
 Severity:  normal    |     Resolution:            
 Keywords:            |     Difficulty:  Unknown   
 Testcase:            |   Architecture:  Unknown   
       Os:  Unknown   |  
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Comment (by simonpj):

 See also #1982

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1954#comment:2>
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