[GHC] #1333: core lint failures from arrow notation + HPC

[GHC]

#1333: core lint failures from arrow notation + HPC
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    Reporter:  igloo     |        Owner:                                     
        Type:  bug       |       Status:  new                                
    Priority:  normal    |    Milestone:  6.8                                
   Component:  Compiler  |      Version:  6.7                                
    Severity:  normal    |   Resolution:                                     
    Keywords:            |   Difficulty:  Unknown                            
          Os:  Unknown   |     Testcase:  arrowrun001 arrowrun002 arrowrun003
Architecture:  Unknown   |  
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Comment (by ross):

 In the above example, the problematic variable is `auH`.  The use in the
 condition of the `if` is OK; it's the one outside the `if` that is the
 problem.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1333>
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