#984: Syntax error shows in the wrong position -------------------------------------+-------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: low | Milestone: _|_ Component: Compiler (Parser) | Version: 6.4.2 Keywords: syntax parse case do | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: N/A Blockedby: | Blocking: Related: | -------------------------------------+-------------------------------------- Comment(by ian@…): commit d2169af1b312c698ade627c26416a7527f1c46b1 {{{ Author: Ian Lynagh Date: Fri Feb 1 15:23:39 2013 +0000 Improve an error message; fixes #984 This code: f _ = do x <- computation case () of _ -> result <- computation case () of () -> undefined Now gives this error: Parse error in pattern: case () of { _ -> result } Possibly caused by a missing 'do'? compiler/parser/Parser.y.pp | 22 +++++---- compiler/parser/RdrHsSyn.lhs | 108 ++++++++++++++++++++++-------------------- 2 files changed, 70 insertions(+), 60 deletions(-) }}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/984#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler