[GHC] #8089: Implementation of GHC.Event.Poll.poll is broken due to bad coercion

[GHC]

#8089: Implementation of GHC.Event.Poll.poll is broken due to bad coercion
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        Reporter:  merijn      |            Owner:
            Type:  bug         |           Status:  patch
        Priority:  normal      |        Milestone:
       Component:              |          Version:  7.6.3
  libraries/base               |         Keywords:  patch
      Resolution:              |     Architecture:  Unknown/Multiple
Operating System:              |       Difficulty:  Easy (less than 1 hour)
  Unknown/Multiple             |       Blocked By:
 Type of failure:  Runtime     |  Related Tickets:
  crash                        |
       Test Case:              |
        Blocking:              |
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Comment (by thoughtpolice):

 I currently can't reproduce this on amd64/Linux. I'll get my OS X machine
 out and try and merge it tomorrow.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8089#comment:4>
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