#7989: "No constructor has all these fields" message can be improved ---------------------------------+------------------------------------------ Reporter: akio | Owner: Type: feature request | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Other Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by monoidal): Do you handle this situation? {{{ data T = A { x,y :: Int} | B { y,z :: Int } | C { z,x :: Int} f a = a { x=0, y=0, z=0 } }}} Error message here cannot mention only two fields. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7989#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler