Re: [GHC] #12609: unused-top-binds wrongly warns about underscore-prefixed field names when DuplicateRecordFields enabled

#12609: unused-top-binds wrongly warns about underscore-prefixed field names when DuplicateRecordFields enabled -------------------------------------+------------------------------------- Reporter: jml | Owner: adamgundry Type: bug | Status: patch Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: newcomer, ORF Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Incorrect | Test Case: warning at compile-time | overloadedrecflds/should_compile/T12609 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2549 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"48ff0843eee29313cc2da14c04dc57f6589ab040/ghc" 48ff0843/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="48ff0843eee29313cc2da14c04dc57f6589ab040" Do not warn about unused underscore-prefixed fields (fixes Trac #12609) When DuplicateRecordFields is enabled, the mangling of selector names was causing them to be reported as unused even if prefixed by an underscore. This corrects the OccName used by the check. Test Plan: New test overloadedrecflds/should_compile/T12609 Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2549 GHC Trac Issues: #12609 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12609#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler