#13154: Standalone-derived anyclass instances aren't as permissive as empty instances -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: RyanGlScott Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.1 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: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * owner: (none) => RyanGlScott Comment: See also commits: * a4f347c23ed926c24d178fec54c27d94f1fae0e4 (`Split out inferConstraintsDataConArgs from inferConstraints`) * ed7a830de6a2ea74dd6bb81f8ec55b9fe0b52f28 (`Use a ReaderT in TcDeriv to avoid some tedious plumbing`) * 9cb289abc582c9eb8337a2621baf58e35feeff46 (`Remove hack put in place for #12512`) Which have made progress towards fixing this ticket (but on whose commit messages I forgot to mention it). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13154#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler