[GHC] #5751: code works in 7.0 but hangs in 7.2/7.4 due to changes in type checker (most likely)

[GHC]

#5751: code works in 7.0 but hangs in 7.2/7.4 due to changes in type checker (most
likely)
-------------------------------+--------------------------------------------
    Reporter:  JeremyShaw      |       Owner:                             
        Type:  bug             |      Status:  new                        
    Priority:  normal          |   Milestone:                             
   Component:  Compiler        |     Version:  7.2.1                      
    Keywords:                  |          Os:  Linux                      
Architecture:  x86_64 (amd64)  |     Failure:  Incorrect result at runtime
  Difficulty:  Unknown         |    Testcase:                             
   Blockedby:                  |    Blocking:                             
     Related:                  |  
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Comment(by dsf):

 Yes, we have a workaround so we can proceed with 7.4.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5751#comment:8>
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