unifyTypeList :: [TcTauType] -> TcM ()
unifyTypeList [] = return ()
unifyTypeList [_] = return ()
-unifyTypeList (ty1:tys@(ty2:_)) = do { unifyType ty1 ty2
- ; unifyTypeList tys }
+unifyTypeList (ty1:tys@(ty2:_)) = do { _ <- unifyType ty1 ty2
+ ; unifyTypeList tys }
\end{code}
%************************************************************************
-- with that type.
zapToMonotype res_ty
= do { res_tau <- newFlexiTyVarTy liftedTypeKind
- ; boxyUnify res_tau res_ty
+ ; _ <- boxyUnify res_tau res_ty
; return res_tau }
unBox :: BoxyType -> TcM TcType