#10461: Suggest UnliftedFFITypes when applicable -------------------------------------+------------------------------------- Reporter: ezyang | Owner: ezyang Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.11 (Type checker) | Operating System: Unknown/Multiple Keywords: | Type of failure: Incorrect Architecture: | warning at compile-time Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Here's an example bad error message: {{{ Serum.hs:5:1: Unacceptable result type in foreign declaration: ‘Word#’ cannot be marshalled in a foreign call When checking declaration: foreign import prim safe "static chenycopy" cheneycopy :: Any -> Word# }}} We should also add something like: {{{ To enable marshalling unlifted types, enable -XUnliftedFFITypes }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10461 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler