#12860: GeneralizedNewtypeDeriving + MultiParamTypeClasses sends typechecker into an infinite loop -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): If I understand correctly, GHC sometimes rejects `deriving` clauses if the inferred context is considered too "exotic", right? Is there a nice way to teach GHC that this case should be marked as exotic? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12860#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler