[GHC] #9226: Internal error when using equality constraint in pattern synonyms

[GHC]

#9226: Internal error when using equality constraint in pattern synonyms
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        Reporter:  Iceland_jack      |            Owner:
            Type:  bug               |           Status:  new
        Priority:  lowest            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:  renamer, pattern
Operating System:  Linux             |  synonyms, GADTs
 Type of failure:  GHC rejects       |     Architecture:  x86
  valid program                      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  #8968
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Comment (by simonpj):

 I'd forgotten all about #8968.  Yes, this ticket is really a dup of #8968.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9226#comment:4>
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