Improve error message in deriving( Functor )
[ghc.git] / testsuite / tests / typecheck / should_fail / tcfail170.hs
1 {-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies #-}
2
3 module ShouldFail where
4
5 class C a b | a -> b
6
7 instance C [p] [q]
8 -- Coverage condition fails