[GHC] #5837: Context reduction stack overflow can take very long

[GHC]

#5837: Context reduction stack overflow can take very long
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    Reporter:  dreixel                  |       Owner:  simonpj         
        Type:  bug                      |      Status:  new             
    Priority:  normal                   |   Milestone:  7.6.1           
   Component:  Compiler (Type checker)  |     Version:  7.4.1-rc2       
    Keywords:                           |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |     Failure:  None/Unknown    
  Difficulty:  Unknown                  |    Testcase:                  
   Blockedby:                           |    Blocking:                  
     Related:                           |  
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Comment(by dimitris):

 In the ghc-new-flavor branch (which I have not yet merged to master) I get
 this program complaining in ~ 2 seconds using the default 200 context
 stack. Is this a better behavior? There is still something super-linear as
 the context stack increases but that's because there are many bi-products
 (all intermediate family applications are named by flatten skolems, this
 can't be helped), but I am wondering if this is better than the comment
 "takes `forever' to compile" you wrote above?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5837#comment:4>
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