#9739: GHC 7.8 chokes on recursive classes -------------------------------------+------------------------------------- Reporter: bitonic | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 (Type checker) | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Compile- | Related Tickets: time crash | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by bitonic): Actually, you don't need `MultiParamTypeClasses`: {{{#!hs module Foo where class Class3 a => Class1 a where class Class2 a where class2 :: (Class3 a) => b class (Class1 a, Class2 a) => Class3 a where }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9739#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler