#9739: GHC 7.8 chokes on recursive classes -------------------------------------+------------------------------------- Reporter: bitonic | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 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: | typecheck/should_fail/T9739 | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by dfeuer): I don't understand why such a member signature was even allowed without `-XConstrainedClassMethods`. That's essentially a syntax error! Someone also noticed that `Foldable` members currently have a redundant (but harmless) `Foldable` constraint that I think shouldn't have been allowed (I'll take care of those). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9739#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler