#11371: Bogus in-scope set in substitutions -------------------------------------+------------------------------------- Reporter: simonpj | Owner: niteria Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #11360 | Differential Rev(s): phab:D1792, Wiki Page: | phab:D1801, phab:D1802 -------------------------------------+------------------------------------- Comment (by Bartosz Nitka <niteria@…>): In [changeset:"1757dd8ebed0732018319e43e6468b868a6aceeb/ghc" 1757dd8e/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="1757dd8ebed0732018319e43e6468b868a6aceeb" Don't recompute some free vars in lintCoercion As pointed out by @simonpj on D2044 we don't need to compute the free vars of the range of the substitution as most of them are already carried by the monad. This should be a tiny performance improvement over the version from before D2044. Also removes an extra function that is now unnecessary. Test Plan: ./validate && ./validate --slow Reviewers: goldfire, simonpj, austin, bgamari Reviewed By: simonpj Subscribers: thomie, simonmar, simonpj Differential Revision: https://phabricator.haskell.org/D2060 GHC Trac Issues: #11371 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11371#comment:57> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler