[GHC] #8242: Infinite loop with addCFinalizerToWeak

[GHC]

#8242: Infinite loop with addCFinalizerToWeak
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       Reporter:  akio    |             Owner:
           Type:  bug     |            Status:  new
       Priority:  normal  |         Milestone:
      Component:          |           Version:  7.6.3
  Runtime System          |  Operating System:  Linux
       Keywords:          |   Type of failure:  Incorrect result at runtime
   Architecture:  x86_64  |         Test Case:
  (amd64)                 |          Blocking:
     Difficulty:          |
  Unknown                 |
     Blocked By:          |
Related Tickets:          |
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 (moved from #8236 )

 When I compile the attached program with {{{-threaded -O2}}} and run it,
 it does not terminate.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8242>
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