[GHC] #15886: Spurious warning about incomplete pattern with PatternSynonyms

[GHC]

#15886: Spurious warning about incomplete pattern with PatternSynonyms
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        Reporter:  selinger          |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.6.3
       Component:  Compiler          |              Version:  8.6.1
      Resolution:  invalid           |             Keywords:
                                     |  PatternSynonyms,
                                     |  PatternMatchWarnings
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Incorrect         |  (amd64)
  error/warning at compile-time      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by selinger):

 OK, this makes sense. Thanks!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15886#comment:4>
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