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

[GHC]

#12038: Shutdown interacts badly with requestSync()
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        Reporter:  simonmar          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       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:  10860
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Marlow <marlowsd@…>):

 In [changeset:"cfc5df43a7789832a2789e517d8270650cc31b7f/ghc" cfc5df4/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="cfc5df43a7789832a2789e517d8270650cc31b7f"
 Fix ASSERT failure and re-enable setnumcapabilities001

 The assertion failure was fairly benign, I think, but this fixes it.
 I've been running the test repeatedly for the last 30 mins and it hasn't
 triggered.

 There are other problems exposed by this test (see #12038), but I've
 worked around those in the test itself for now.

 I also copied the relevant bits of the parallel library here so that we
 don't need parallel for the test to run.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12038#comment:3>
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