[GHC] #14538: forkprocess01 fails occassionally on with multiple ACQUIRE_LOCK panic

[GHC]

#14538: forkprocess01 fails occassionally on with multiple ACQUIRE_LOCK panic
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:
       Component:  Runtime System    |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by osa1):

 How can I reproduce this? I'm trying this on ghc-mini (ghc at
 df2c3b3364834d2fd038192c89348fc50a2e0475), `forkprocess01` passes every
 time.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14538#comment:5>
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