[GHC] #11611: ghc panics

[GHC]

#11611: ghc panics
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      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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Comment (by Iceland_jack):

 I have yet to upgrade my compiler. Can someone confirm that this is the
 same bug:

 {{{#!hs
 {-# LANGUAGE MultiParamTypeClasses, TypeOperators, PolyKinds, TypeInType,
 FunctionalDependencies, AllowAmbiguousTypes, FlexibleInstances,
 FlexibleContexts #-}

 import Data.Kind (Type)

 class ToMimeType k (a :: k) | a -> k where
   toMimeType :: String

 instance ToMimeType Type Int where
   toMimeType = "int"

 instance ToMimeType Type Float where
   toMimeType = "fl"

 instance (ToMimeType a x, ToMimeType [a] xs) => ToMimeType [u] (x:xs)
 where
 }}}

 Feel free to close the ticket if so

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11611#comment:2>
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