[GHC] #5970: Type checker hangs

[GHC]

#5970: Type checker hangs
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    Reporter:  Lemming                  |       Owner:                              
        Type:  bug                      |      Status:  new                         
    Priority:  normal                   |   Milestone:                              
   Component:  Compiler (Type checker)  |     Version:  7.4.1                       
    Keywords:                           |          Os:  Linux                       
Architecture:  x86                      |     Failure:  Compile-time performance bug
  Difficulty:  Unknown                  |    Testcase:                              
   Blockedby:                           |    Blocking:                              
     Related:                           |  
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Comment(by simonpj):

 Can you boil down the "repeat n times gives non-linear behaviour" part?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5970#comment:3>
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