[GHC] #11667: Incorrect pattern synonym types in error messages

[GHC]

#11667: Incorrect pattern synonym types in error messages
-------------------------------------+-------------------------------------
        Reporter:  rdragon           |                Owner:  rdragon
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.2
       Component:  Compiler          |              Version:  8.0.1-rc2
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11213            |  Differential Rev(s):  Phab:D1967
       Wiki Page:                    |
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Changes (by bgamari):

 * milestone:   => 8.0.2


Comment:

 There is a detailed comment describing the errors before and after
 rdragon's proposed solution on Phab:D1967.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11667#comment:1>
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