blob: a0d0442fedff0e9a197a6d6f71169f08f13e9c7d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
{-# LANGUAGE MonoLocalBinds, FlexibleInstances, OverloadedStrings #-}
{-# OPTIONS -fsolve-constant-dicts #-}
module T14434 where
class ToString a where
toString :: a -> String
-- | This instance is used in original code as hack
-- to simplify code generation
instance {-# OVERLAPPABLE #-} ToString a where
toString _ = "Catchall attribute value"
toStringX :: (ToString a) => a -> String
toStringX = toString
-- Here we do /not/ want to solve the ToString
-- constraint with the local instance
|
