[GHC] #5763: Confusing error message

[GHC]

#5763: Confusing error message
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        Reporter:  simonpj                       |            Owner:
            Type:  bug                           |  simonpj
        Priority:  high                          |           Status:  new
       Component:  Compiler                      |        Milestone:  7.6.2
      Resolution:                                |          Version:  7.2.2
Operating System:  Unknown/Multiple              |         Keywords:
 Type of failure:  None/Unknown                  |     Architecture:
       Test Case:  indexed-                      |  Unknown/Multiple
  types/should_fail/T5763                        |       Difficulty:
        Blocking:                                |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
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Comment (by wira):

 can i know too problem solving

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5763#comment:6>
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