#11672: Poor error message -------------------------------------+------------------------------------- Reporter: adamgundry | Owner: adamgundry Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1-rc2 checker) | Keywords: Resolution: | ErrorMessages, TypeInType Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: #11198 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): For reference, here is the current error message in GHC 8.0.1/HEAD: {{{ • Couldn't match type ‘*’ with ‘Symbol’ Expected type: Proxy ((->) Int Bool) Actual type: Proxy (Int -> Bool) Use -fprint-explicit-kinds to see the kind arguments • In the first argument of ‘f’, namely ‘(Proxy :: Proxy (Int -> Bool))’ In the expression: f (Proxy :: Proxy (Int -> Bool)) In an equation for ‘f’: f _ = f (Proxy :: Proxy (Int -> Bool)) }}} This seems to address the first and third bullet points above. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11672#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler