#5412: dataTypeConstrs gives unhelpful error message -------------------------------------+------------------------------------ Reporter: NeilMitchell | Owner: klangner Type: bug | Status: patch Priority: normal | Milestone: 7.6.2 Component: libraries/base | Version: 7.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by klangner): Yes you are right. The problem is that this kind of message can't be used in other places. So I was not sure if I should change other functions as well. On the other hand it would be nice to improve some other error messages since probably sooner or later this will return as new ticket. How do you think would be better? 1. Change only function from this ticket description 2. Change only messages where ADT is expected (4 places) and leave other messages intact. 3. Try to improve other error messages in this module as well. Third option will require more work and I'll probably need some help with the message texts. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5412#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler