[GHC] #7930: Nested STM Invariants are lost

[GHC]

#7930: Nested STM Invariants are lost
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        Reporter:  fryguybob         |                   Owner:  fryguybob
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Runtime System    |                 Version:  7.6.3
      Resolution:                    |                Keywords:  STM
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * cc: simonmar (added)
 * milestone:   => 7.12.1


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7930#comment:4>
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