[GHC] #13793: Simple program trips checkNurserySanity()

[GHC]

#13793: Simple program trips checkNurserySanity()
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        Reporter:  niteria           |                Owner:  niteria
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Any motion towards a fix?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13793#comment:2>
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