[GHC] #9516: unsafeUnmask unmasks even inside uninterruptibleMask

[GHC]

#9516: unsafeUnmask unmasks even inside uninterruptibleMask
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        Reporter:  edsko             |                   Owner:  simonmar
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Runtime System    |                 Version:  7.8.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D181
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5a8a8a64e793d2efbe9ea7d445cc8efe75d11f80/ghc"
 5a8a8a64/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5a8a8a64e793d2efbe9ea7d445cc8efe75d11f80"
 Don't allowInterrupt inside uninterruptibleMask

 This fixes #9516.

 Differential Revision: https://phabricator.haskell.org/D181

 Authored-by: Edsko de Vries <edsko at well-typed.com>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9516#comment:3>
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