#12003: Improve error message about closed variables -------------------------------------+------------------------------------- Reporter: | Owner: facundo.dominguez | Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: | StaticPointers Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #11656 | Differential Rev(s): Phab:D2167 Wiki Page: | -------------------------------------+------------------------------------- Changes (by facundo.dominguez): * status: new => patch * differential: => Phab:D2167 @@ -23,1 +23,1 @@ - Where it would be more helpful to get a message like + where it would be more helpful to get a message like New description: After allowing local bindings in static definitions the following program {{{ {-# LANGUAGE StaticPointers #-} module M where f x = static g where g = h h = x }}} yields the error {{{ ../tmp/M.hs:4:7: error: • ‘g’ is used in a static form but it is not closed. • In the expression: static g In an equation for ‘f’: f x = static g where g = h h = x }}} where it would be more helpful to get a message like {{{ ../tmp/M.hs:4:7: error: • ‘g’ is used in a static form but it is not closed because it uses ‘h’ which uses ‘x’ which is not let-bound. • In the expression: static g In an equation for ‘f’: f x = static g where g = h h = x }}} -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12003#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler