[GHC] #12038: Shutdown interacts badly with requestSync()

[GHC]

#12038: Shutdown interacts badly with requestSync()
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        Reporter:  simonmar          |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Runtime System    |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2926
       Wiki Page:                    |
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Changes (by bgamari):

 * status:  new => patch
 * differential:   => Phab:D2926


Comment:

 Phab:D2926 is a somewhat questionable patch I put together between builds.
 I'm a bit unsure as to whether the approach is the sort of thing we want,
 though.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12038#comment:12>
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