[GHC] #5821: SPECIALISE fails with a cryptic warning

[GHC]

#5821: SPECIALISE fails with a cryptic warning
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    Reporter:  rl                |       Owner:                                   
        Type:  bug               |      Status:  new                              
    Priority:  normal            |   Milestone:  7.6.1                            
   Component:  Compiler          |     Version:  7.5                              
    Keywords:                    |          Os:  Unknown/Multiple                 
Architecture:  Unknown/Multiple  |     Failure:  Incorrect warning at compile-time
  Difficulty:  Unknown           |    Testcase:                                   
   Blockedby:                    |    Blocking:                                   
     Related:                    |  
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Changes (by igloo):

  * difficulty:  => Unknown
  * milestone:  => 7.6.1


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5821#comment:1>
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