[GHC] #2422: Unrelated instance foils optimizer

[GHC]

#2422: Unrelated instance foils optimizer
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  Reporter:  sedillard     |          Owner:        
      Type:  bug           |         Status:  closed
  Priority:  low           |      Milestone:  6.14.1
 Component:  Compiler      |        Version:  6.8.3 
Resolution:  fixed         |       Keywords:        
Difficulty:  Unknown       |             Os:  Linux 
  Testcase:                |   Architecture:  x86   
   Failure:  None/Unknown  |  
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Changes (by kfrdbs):

 * cc: kfrdbs@… (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2422#comment:7>
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