[GHC] #14246: Probably AllowAmbiguousTypes + UndecidableInstances + TypeInType

[GHC]

#14246: Probably AllowAmbiguousTypes + UndecidableInstances + TypeInType
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        Reporter:  Toricon           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13271            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * related:   => #13271


Comment:

 I don't know what `MCS.Core` is, so I have no way to test this code. That
 being said, this error message is identical to that of #13271, which has
 been fixed as of GHC 8.2.1. Can you test your code on 8.2.1 and see if you
 still experience the same error?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14246#comment:1>
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