#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 Ben Gamari <ben@…>): In [changeset:"73935326e0cf85ed077b9ab7dd8f197d39e2cd5b/ghc" 73935326/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="73935326e0cf85ed077b9ab7dd8f197d39e2cd5b" Use a correct substitution in tcInstType `ty` doesn't have to be a closed type, so we need to add its free vars to the in-scope set. They don't seem to be available anywhere nearby, so we have to compute them. Test Plan: ./validate Reviewers: goldfire, austin, bgamari, simonpj Reviewed By: simonpj Subscribers: thomie, simonmar Differential Revision: https://phabricator.haskell.org/D2042 GHC Trac Issues: #11371 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11371#comment:54> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler