[GHC] #11959: Importing doubly exported pattern synonym and associated pattern synonym panics

[GHC]

#11959: Importing doubly exported pattern synonym and associated pattern synonym
panics
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        Reporter:  darchon           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.2
       Component:  Compiler          |              Version:  8.0.1-rc3
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2132,
       Wiki Page:                    |  Phab:D2133
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Comment (by bgamari):

 Ahh, right; I likely omitted the `pattern` keyword in my experiment.
 Thanks for catching this, Matthew.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11959#comment:13>
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