[GHC] #4457: Way to determine if code is running in thread fixed on capability

[GHC]

#4457: Way to determine if code is running in thread fixed on capability
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    Reporter:  mitar             |        Owner:  simonmar    
        Type:  feature request   |       Status:  new         
    Priority:  high              |    Milestone:  7.2.1       
   Component:  Compiler          |      Version:  6.12.3      
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Comment(by simonmar):

 See #4859

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4457#comment:2>
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