[GHC] #9954: Required constraints are not inferred for pattern synonyms involving GADTs

[GHC]

#9954: Required constraints are not inferred for pattern synonyms involving GADTs
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        Reporter:  cactus            |                   Owner:  cactus
            Type:  bug               |                  Status:  closed
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:
  checker)                           |                Keywords:
      Resolution:  invalid           |  PatternSynonyms
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #9953             |  Differential Revisions:
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Changes (by simonpj):

 * status:  new => closed
 * resolution:   => invalid


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9954#comment:2>
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