[GHC] #5331: Warning for unused existentially quantified types

[GHC]

#5331: Warning for unused existentially quantified types
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    Reporter:  Lemming           |        Owner:  simonpj     
        Type:  feature request   |       Status:  new         
    Priority:  normal            |    Milestone:              
   Component:  Compiler          |      Version:  6.12.3      
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Changes (by simonpj):

  * owner:  => simonpj


Comment:

 Good idea. I'll do this

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5331#comment:1>
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