#10114: Kind mismatches with AnyK in rank-2 types -------------------------------------+------------------------------------- Reporter: cam | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by simonpj): Current BUG (HEAD, 7.10) {{{ type T = forall (f :: k -> k2) (a::k). f a }}} Compile with `-fprint-explicit-kinds -ddump-types -XRankNTypes -XPolyKinds` {{{ TYPE CONSTRUCTORS type T (k2 :: BOX) = forall (k :: BOX) (k1 :: BOX) (f :: k -> k1) (a :: k). f a }}} But this elaborated `T` simply doesn't have a sensible kind. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10114#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler