[GHC] #11161: New exhaustiveness checker breaks concurrent/prog001

[GHC]

#11161: New exhaustiveness checker breaks concurrent/prog001
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
                                     |  PatternMatchWarnings
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  performance bug                    |  concurrent/prog001
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * owner:  gkaracha =>
 * keywords:   => PatternMatchWarnings
 * status:  closed => new
 * resolution:  fixed =>


Comment:

 Re-opening to improve for 8.2

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11161#comment:4>
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