#8004: Applicative/Monad proposal related warnings (AMP phase 1) -------------------------------------+------------------------------------- Reporter: quchen | Owner: quchen Type: feature request | Status: closed Priority: high | Milestone: 7.8.1 Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #4834 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari <ben@…>): In [changeset:"290def72f54db7969258b4541aaefc87b54ce448/ghc" 290def72/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="290def72f54db7969258b4541aaefc87b54ce448" Implement warnings for Semigroups as parent of Monoid This patch is similar to the AMP patch (#8004), which offered two functions: 1. Warn when an instance of a class has been given, but the type does not have a certain superclass instance 2. Warn when top-level definitions conflict with future Prelude names These warnings are issued as part of the new `-Wcompat` warning group. Reviewers: hvr, ekmett, austin, bgamari Reviewed By: hvr, ekmett, bgamari Subscribers: ekmett, thomie Differential Revision: https://phabricator.haskell.org/D1539 GHC Trac Issues: #11139 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8004#comment:25> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler