"impossible" failure while type checking

$ cat failure.hs

import Control.Monad.Trans.Class
oops :: () -> IO () -> IO ()
oops = lift . lift
main = return ()

$ ghc failure.hs

[1 of 1] Compiling Main             ( failure.hs, failure.o )

failure.hs:3:8:ghc: panic! (the 'impossible' happened)
  (GHC version 7.6.3 for i386-apple-darwin):
	kindFunResult ghc-prim:GHC.Prim.*{(w) tc 34d}

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Trac metadata

Trac field	Value
Version	7.6.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (Type checker)
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