#10393: Bogus warning with OverloadedLists -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Incorrect Unknown/Multiple | warning at compile-time Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- When I say {{{ {-# LANGUAGE OverloadedLists #-} lgo :: [a] -> () lgo [] = () lgo (_:_) = () }}} I get {{{ /Users/rae/temp/Bug.hs:4:1: Warning: Pattern match(es) are non-exhaustive In an equation for ‘lgo’: Patterns not matched: [] }}} I don't know !OverloadedLists deeply, but that warning surely is confusing! Happens on both 7.8.3 and 7.10.1. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10393 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler