#4012: Compilation results are not deterministic -------------------------------------+------------------------------------- Reporter: kili | Owner: niteria Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 6.12.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: 11362 | Blocking: Related Tickets: #10424 | Differential Rev(s): Phab:D910, | Phab:D1073, Phab:D1133, Phab:D1192, | Phab:D1268, Phab:D1360, Phab:D1373, Wiki Page: | Phab:D1396, Phab:D1457, Phab:D1468, DeterministicBuilds | Phab:D1487, Phab:D1504, Phab:D1508 -------------------------------------+------------------------------------- Comment (by Bartosz Nitka ): In [changeset:"2cb55772c5359e5d71d34e5d42a4a7deb6a5d3db/ghc" 2cb5577/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="2cb55772c5359e5d71d34e5d42a4a7deb6a5d3db" Remove unnecessary Ord instance for ConLike The Ord instance for ConLike uses Unique order which is bad for determinism. Fortunately it's not used, so we can just delete it. The is part of the effort to make Unique comparisons explicit. Test Plan: ./validate Reviewers: austin, simonmar, bgamari, simonpj Reviewed By: simonpj Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2018 GHC Trac Issues: #4012 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/4012#comment:144 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler