#14331: Overzealous free-floating kind check causes deriving clause to be rejected -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.2.1 checker) | Resolution: | Keywords: deriving 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 RyanGlScott): Replying to [comment:8 simonpj]:
Does that help?
Thank you Simon, that was the careful explanation I was searching for. I think I'm sold on this idea now.
Is this essentially the same ticket as #14332? Can we combine?
I'm not sure. Do we know for sure that the bug described in this ticket is caused by a deficient treatment of quantification in `deriving` clauses? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14331#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler