#9049: Expose srcLoc from the assertion architecture to allow better error messages -------------------------------------+------------------------------------- Reporter: nh2 | Owner: gridaphobe Type: feature request | Status: patch Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: Phab:D578 -------------------------------------+------------------------------------- Comment (by simonpj): Re "the second bullet point under Implementation Details", I now understand. Good point. The issue is this: {{{ f :: (?loc :: CallStack) => IO () f = print (?location :: CallStack) }}} There are two alternatives for what to pass to `print`: * Pass the call site of `print`, pushed onto the passed-in call stack * Pass a singleton stack, just the call site of `print`, reflecting the change in name. You have implemented the first, but I think the latter would perhaps be more intuitive. Does anyone else have opinions? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9049#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler