[GHC] #5653: "throw" in IO monad is incorrectly optimized away

[GHC]

#5653: "throw" in IO monad is incorrectly optimized away
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  Reporter:  quark                        |          Owner:                  
      Type:  bug                          |         Status:  infoneeded      
  Priority:  normal                       |      Milestone:                  
 Component:  Compiler                     |        Version:  6.12.3          
Resolution:                               |       Keywords:                  
  Testcase:                               |      Blockedby:                  
Difficulty:                               |             Os:  Unknown/Multiple
  Blocking:                               |   Architecture:  Unknown/Multiple
   Failure:  Incorrect result at runtime  |  
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Changes (by simonpj):

  * status:  new => infoneeded


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5653#comment:4>
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