Add explicit type applications

This example is derived from code in my application. It works, but I can't add a signature to it. In other places it is preventing some code from compiling at all.

{-# LANGUAGE KindSignatures, MultiParamTypeClasses, RankNTypes #-}
{-# OPTIONS -Wall #-}
module Test where

class C t1 t2 m where method :: Int -> m t2

f :: forall t1 t2 (m :: * -> *). C t1 t2 m => Int -> m t2
f x = method x

Trac metadata

Trac field	Value
Version	7.0.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (Type checker)
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Linux
Architecture	x86_64 (amd64)