[GHC] #3160: No exception safety in Control.Concurrent.QSem QSemN and SampleVar

[GHC]

#3160: No exception safety in Control.Concurrent.QSem QSemN and SampleVar
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        Reporter:  ChrisKuklewicz    |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.6.1
       Component:  libraries/base    |              Version:  7.0.2
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by domenkozar):

 For reference see https://ghc.haskell.org/trac/ghc/ticket/7417#comment:5

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3160#comment:26>
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