#13947: GHC 8.2 gives misleading error message for out-of-scope infix type constructor -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: RyanGlScott Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: ORF Operating System: Unknown/Multiple | Architecture: Type of failure: Poor/confusing | Unknown/Multiple error message | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * owner: (none) => RyanGlScott Comment: After skimming the commitdiff, I'm reasonably confident I know what is happening, and how fix it. I'll post a Phab Diff after I've validated. Also, I just realized that there's another problem with the error message in GHC 8.2: it claims that a constructor `:~:` is in scope, but that's untrue. I'll submit a separate ticket for this later. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13947#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler