[GHC] #11152: GND accepts ill-roled coercion when manually defining it won't typecheck

[GHC]

#11152: GND accepts ill-roled coercion when manually defining it won't typecheck
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        Reporter:  RyanGlScott       |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  7.10.2
  checker)                           |
      Resolution:  invalid           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC accepts       |  Unknown/Multiple
  invalid program                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9123             |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 I don't believe there's a new bug, no (and I think I closed this issue
 earlier).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11152#comment:6>
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