#12064: tcIfaceGlobal error with existentially quantified types -------------------------------------+------------------------------------- Reporter: ezyang | Owner: ezyang Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2221 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Edward Z. Yang <ezyang@…>): In [changeset:"8f6d292746217f1fa9f645ff8d191943af1c5771/ghc" 8f6d292/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="8f6d292746217f1fa9f645ff8d191943af1c5771" Fix #12064 by making IfaceClass typechecking more lazy. Summary: Comes with a test based off of prog006. Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: simonpj, austin, bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2221 GHC Trac Issues: #12064 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12064#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler