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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
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  • #5296
Closed
Open
Issue created Jul 03, 2011 by dsf@trac-dsf

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
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Blocking
CC
Operating system Linux
Architecture x86_64 (amd64)
Edited Mar 09, 2019 by Simon Peyton Jones
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