[GHC] #7503: Bug with PolyKinds, type synonyms & GADTs

[GHC]

#7503: Bug with PolyKinds, type synonyms & GADTs
-------------------------------------+-------------------------------------
        Reporter:  Ashley Yakeley    |                Owner:  simonpj
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  7.6.1
  checker)                           |             Keywords:  GADTs,
      Resolution:                    |  TypeInType
Operating System:  Linux             |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  typecheck/should_compile/T7503a
      Blocked By:                    |             Blocking:
 Related Tickets:  #14451, #12088    |  Differential Rev(s):
       Wiki Page:                    |
  https://ghc.haskell.org/trac/ghc/wiki/GhcKinds/KindInference|
-------------------------------------+-------------------------------------
Changes (by simonpj):

 * related:  #14451 => #14451, #12088


Comment:

 #12088 seems to be in the same territory

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7503#comment:13>
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