#16097: Bad error message for a misaligned case block in a do-let expression -------------------------------------+------------------------------------- Reporter: kanetw | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Poor/confusing | Unknown/Multiple error message | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by svenpanne): Replying to [comment:1 osa1]:
I suspect (but haven't verified) that this is caused by the block arguments patch: be84823b956f0aa09c58d94d1901f2dff13546b4
Well, confusion is the price you have to pay when you try to give more or less every sequence of characters a meaning... Introducing tons of conflicts into the parser should have been a clear warning sign that BlockArguments and quite a few of the recent "improvements" to the syntax are a bad idea. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16097#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler