[GHC] #4956: threadDelay behavior 64-bit mac os x

[GHC]

#4956: threadDelay behavior 64-bit mac os x
-------------------------------+--------------------------------------------
    Reporter:  perikov         |       Owner:                             
        Type:  bug             |      Status:  new                        
    Priority:  normal          |   Component:  Compiler                   
     Version:  7.0.1           |    Keywords:  threadDelay                
    Testcase:                  |   Blockedby:                             
          Os:  MacOS X         |    Blocking:                             
Architecture:  x86_64 (amd64)  |     Failure:  Incorrect result at runtime
-------------------------------+--------------------------------------------
 threadDelay 1000000

 works as expected in 7.0.1-x86_64
 return immediately in DEVELOPMENT 7.1.20110131
 hangs eating CPU in STABLE 7.0.1.20110201, 7.0.1.20110211

 to reproduce:
 fire up ghci

 import Control.Concurrent
 threadDelay 1000000

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4956>
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