#12557: Regression in type inference with RankNTypes -------------------------------------+------------------------------------- Reporter: slindley | Owner: Type: bug | Status: closed Priority: low | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Keywords: Resolution: invalid | ImpredicativeTypes Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): Yes, that error message is unfortunate. But I agree with 8.0 that your code should be rejected. I have filed #12563 requesting an error message improvement. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12557#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler