#14253: Pattern match checker mistakenly concludes pattern match on pattern synonym is unreachable -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: | PatternSynonyms, | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: #11984, #14098 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari <ben@…>): In [changeset:"acd346e3fad4d138cd8f421bb84ec6a1b357e326/ghc" acd346e3/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="acd346e3fad4d138cd8f421bb84ec6a1b357e326" testsuite: Add testcase for #14253 Reviewers: austin Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D3997 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14253#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler