#15125: Typeclass instance selection depends on the optimisation level -------------------------------------+------------------------------------- Reporter: nicuveo | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.2.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nicuveo): I tested with 8.4.2: it prints 0 in both cases. This seems inconsistent with the [http://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.... #extension-IncoherentInstances documented behaviour of incoherent instances]? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15125#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler