#12959: GHC doesn't warn about missing implementations for class methods beginning with an underscore -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2849 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): I don't think there was a deep reason. Currently `-Wunusused-binds` doesn't warn about variables starting with an underscore, so the leading underscore is a per-variable hint that you intend this to be unused and should not warn. So maybe I just naively extended it to the class-method case, which is admittedly a bit different. I have no objection to killing off this special case. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12959#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler