#11152: GND accepts ill-roled coercion when manually defining it won't typecheck -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler (Type | Version: 7.10.2 checker) | Resolution: invalid | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts | Unknown/Multiple invalid program | Test Case: Blocked By: | Blocking: Related Tickets: #9123 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): So, is there a bug here? I'm tempted to close, but I wanted to double- check. (And, yes, #9123 is a serious, open issue. I think there's a viable approach written up in the ticket, but it would need a fair bit of work -- and quite possibly a research paper -- to sort out.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11152#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler