#7873: A poly-kinded newtype existential crisis --------------------------------------+------------------------------------- Reporter: ekmett | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.6.3 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: GHC rejects valid program | Blockedby: Blocking: | Related: --------------------------------------+------------------------------------- Comment(by ekmett): A version without classes or complicated desugarings: {{{ newtype Magic = Magic (forall p a. p a -> Int) }}} also exhibits the issue. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7873#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler