Re: [GHC] #12959: GHC doesn't warn about missing implementations for class methods beginning with an underscore

#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 Ben Gamari ): In [changeset:"503219e3e1667ac39607021b2d9586260fbab32b/ghc" 503219e/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="503219e3e1667ac39607021b2d9586260fbab32b" Warn about missing instance methods that start with an underscore Previously, GHC would not warn whenever there was a class instance that didn't implement a class method whose name begins with an underscore. Fixes #12959. Test Plan: make test TEST=WarnMinimal Reviewers: austin, bgamari, simonpj Reviewed By: bgamari, simonpj Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2849 GHC Trac Issues: #12959 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12959#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler