#13363: Wildcarn patterns and COMPLETE sets can lead to misleading redundant pattern-match warnings -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: | PatternSynonyms, | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by mpickering): But that is not the problem. This warning comes from the built-in constructor set. I think there needs to be some more clever augmentation to the intermediate result in the case that a result of `allCompleteMatches` does not contain the constructor which was used to do the lookup. For example, if `ToGoodToBeTrue` is not in `T, F`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13363#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler