"No match in record selector Var.tcTyVarDetails" with incorrect multi-parameter newtype derivation

{-# LANGUAGE GeneralizedNewtypeDeriving #-}
import Control.Monad.State
newtype WrappedState s a = WS { runWS :: State s a }
    deriving (Monad, MonadState state)

Note that the 'deriving' for MonadState has the wrong variable name. It should be rejected with something like "not in scope: type variable 'state'" but instead this happens:

[pwb@rhuidean tmp]$ ghc bug.hs 
ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.4 for x86_64-unknown-linux):
	No match in record selector Var.tcTyVarDetails

Trac metadata

Trac field	Value
Version	6.10.4
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture