[GHC] #6068: Panic in GHCi when using functional dependencies and promoted kinds

[GHC]

#6068: Panic in GHCi when using functional dependencies and promoted kinds
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        Reporter:  goldfire          |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  GHCi              |          Version:  7.5
      Resolution:                    |         Keywords:  PolyKinds
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  GHCi crash        |       Difficulty:  Unknown
       Test Case:  polykinds/T6068   |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by nomeata):

 With completely fresh check-outs, it does not happen using validate, but
 it does happen with `BuildFlavour = devel2`. So likely it is related to
 `-DDebug` in `GhcStage2HcOpts`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6068#comment:4>
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