#9558: "Illegal equational constraint" that might not be the users fault -------------------------------------+------------------------------------- Reporter: rrnewton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by rwbarton):
Is this a GHC bug in 7.9 or in 7.8?
Neither really, this is an intentional change in behavior, see #8883. (Though I personally question whether it is worth breaking existing code for a rather intangible benefit.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9558#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler