[GHC] #8804: BlockedIndefinitelyOnMVar thrown for an MVar which is still weakly accessible from another thread

[GHC]

#8804: BlockedIndefinitelyOnMVar thrown for an MVar which is still weakly
accessible from another thread
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        Reporter:  bholst                       |            Owner:
            Type:  bug                          |  simonmar
        Priority:  normal                       |           Status:  closed
       Component:  Runtime System               |        Milestone:
      Resolution:  invalid                      |          Version:  7.6.3
Operating System:  Unknown/Multiple             |         Keywords:
 Type of failure:  Incorrect result at runtime  |     Architecture:
       Test Case:                               |  Unknown/Multiple
        Blocking:                               |       Difficulty:
                                                |  Unknown
                                                |       Blocked By:
                                                |  Related Tickets:
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Changes (by simonmar):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 This is correct: remember that the weak reference is ''weak'', so it
 doesn't keep the `MVar` alive, and hence the thread is also not reachable.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8804#comment:1>
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