"ASSERT failed!" with visible kind applications
Sorry for the workload mnguyen. This gives a very short error (using diff for visible kind application: https://phabricator.haskell.org/D5229)
{-# Language CPP #-}
{-# Language QuantifiedConstraints #-}
{-# Language TypeApplications #-}
{-# Language PolyKinds #-}
{-# Language TypeOperators #-}
{-# Language DataKinds #-}
{-# Language TypeFamilies #-}
{-# Language TypeSynonymInstances #-}
{-# Language FlexibleInstances #-}
{-# Language GADTs #-}
{-# Language UndecidableInstances #-}
{-# Language MultiParamTypeClasses #-}
{-# Language FlexibleContexts #-}
import Data.Coerce
import Data.Kind
type Cat ob = ob -> ob -> Type
type Obj = Type
class Coercible (op_a --> b) (b <-- op_a) => (op_a -#- b)
instance Coercible (op_a --> b) (b <-- op_a) => (op_a -#- b)
class (forall (op_a :: obj) (b :: obj). op_a -#- b) => OpOpNoOp obj
instance (forall (op_a :: obj) (b :: obj). op_a -#- b) => OpOpNoOp obj
class
Ríki (obj :: Obj) where
type (-->) :: obj -> obj -> Type
ið :: a --> (a::obj)
class
OpOpNoOp obj
=>
OpRíki (obj :: Obj) where
type (<--) :: obj -> obj -> Type
data Op a = Op a
type family UnOp op where UnOp ('Op obj) = obj
newtype Y :: Cat (Op a) where
Y :: (UnOp b --> UnOp a) -> Y a b
instance Ríki Type where
type (-->) = (->)
ið x = x
instance OpRíki (Op Type) where
type (<--) @(Op Type) = Y @Type
$ ghci -ignore-dot-ghci 577.hs
GHCi, version 8.7.20181017: http://www.haskell.org/ghc/ :? for help
[1 of 1] Compiling Main ( 577.hs, interpreted )
*** Exception: ASSERT failed! file compiler/typecheck/TcFlatten.hs, line 1285
>
Trac metadata
Trac field | Value |
---|---|
Version | 8.6.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | mnguyen |
Operating system | |
Architecture |