[GHC] #3822: pattern guards in arrow notation (Arrows extension) case statement cause compiler panic

[GHC]

#3822: pattern guards in arrow notation (Arrows extension) case statement cause
compiler panic
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    Reporter:  StephenBlackheath  |       Owner:  ross                            
        Type:  bug                |      Status:  new                             
    Priority:  normal             |   Component:  Compiler                        
     Version:  6.12.1             |    Keywords:  arrows pattern guards case panic
          Os:  Linux              |    Testcase:  patternGuard.hs                 
Architecture:  x86_64 (amd64)     |     Failure:  Compile-time crash              
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Changes (by ross):

  * owner:  => ross


Comment:

 Lovely report.  (This is an ordinary guard, rather than a pattern guard.)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3822#comment:3>
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