[GHC] #13726: Declaring GADT constructor and associated data family with the same name gives weird error

[GHC]

#13726: Declaring GADT constructor and associated data family with the same name
gives weird error
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        Reporter:  mrkgnao           |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  new => infoneeded


Comment:

 Please do submit a minimal example, as I can't deduce what program you're
 trying to run, and the description of the error message is sufficiently
 vague that I can't identify what the problem is.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13726#comment:3>
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