[GHC] #14892: Field imposters with DuplicateRecordFields and NamedFieldPuns.

[GHC]

#14892: Field imposters with DuplicateRecordFields and NamedFieldPuns.
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        Reporter:  philderbeast      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.4.1-alpha3
      Resolution:                    |             Keywords:  ORF
Operating System:  MacOS X           |         Architecture:  x86_64
 Type of failure:  GHC accepts       |  (amd64)
  invalid program                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13644            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Thanks for reducing this, philderbeast!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14892#comment:3>
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