[GHC] #5913: Type class dictionary call loops at runtime

[GHC]

#5913: Type class dictionary call loops at runtime
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    Reporter:  mnislaih          |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:                  
   Component:  Compiler          |     Version:  7.4.1           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  Runtime crash   
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Changes (by simonpj):

  * difficulty:  => Unknown


Comment:

 I think this is another example of #5751. I know how to fix it but am
 hoping to wait until after the Haskell Symposium deadline (2 June).

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5913#comment:3>
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