#8710: Overlapping patterns warning misplaced -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1910, Wiki Page: | Phab:D1920 -------------------------------------+------------------------------------- Comment (by gkaracha): Replying to [comment:13 bgamari]: Phab:D1910 will actually provide the following: {{{ Bug.hs:3:1: Warning: Pattern match(es) are overlapped In an equation for ‘hello’: hello 1 = ... (at Bug.hs:3:1) hello 2 = ... (at Bug.hs:4:1) }}} , since there are two redundant clauses. If there was just one it would omit the (at <location>)-part. From Phab:D1920, we will indeed get the warnings you mentioned. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8710#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler