#7854: Constrained method type accepted in Haskell 98 mode -------------------------------------+------------------------------------- Reporter: refold | Owner: thomie Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler (Type | Version: 7.6.3 checker) | Keywords: newcomer Resolution: | Architecture: Operating System: Unknown/Multiple | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * owner: => thomie * component: Compiler => Compiler (Type checker) * milestone: => 7.12.1 Comment: More bugs. GHC only rejects the following program when `-XConstrainedClassMethods` is turned on. It should however always reject it, because `op` doesn't mention any type variables of `Foo`. {{{#!hs module ShouldFail where class Foo a where op :: Eq a => Int }}} I'm working on this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7854#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler