[GHC] #11010: Untouchable type, pattern synonyms

[GHC]

#11010: Untouchable type, pattern synonyms
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        Reporter:  Iceland_jack  |                Owner:
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:
       Component:  Compiler      |              Version:  7.10.2
      Resolution:                |             Keywords:
Operating System:  Linux         |         Architecture:  x86
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
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Comment (by simonpj):

 The signatures are plain wrong.  See comment:5 of #10928.  In both
 signatures, the response should be 'a' is not in scope in the constraint
 `(a ~ Int)`.   It's in the "required" position but mentions an existential
 variable.

 I think we should reverse the provided/required order, as descried in
 #10928, and do it for 8.0.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11010#comment:4>
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