#14421: LambdaCase should be suggested if it is used but not enabled -------------------------------------+------------------------------------- Reporter: tomjaguarpaw | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 8.2.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4260 Wiki Page: | -------------------------------------+------------------------------------- Changes (by sighingnow): * status: new => closed * differential: => Phab:D4260 * resolution: => fixed Comment: This ticket has already implemented in the `BlockArguments` patch, which will be included in ghc-8.6.1. With ghc-HEAD, you will get: {{{#!hs Prelude> :t \case (_,_) -> () <interactive>:1:2: error: Illegal lambda-case (use -XLambdaCase) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14421#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler