#11405: Incorrect failure of type-level skolem escape check -------------------------------------+------------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 8.0.1-rc1 Resolution: | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): I agree that we can fix this one problem, but I doubt that it would generalize. I'd like to understand better what's going on here before going down that route. See NoSubKinds (Issues from Dimitrios) for more information about levity- polymorphic binders. The short answer is that we need to know the runtime size of binders, and we don't know this for levity-polymorphic ones. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11405#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler