#8809: Prettier error messages? -------------------------------------+------------------------------------- Reporter: joelteon | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: 13122 Related Tickets: | Differential Rev(s): #8809,#10073,#10179,#12906 | Wiki Page: | -------------------------------------+------------------------------------- Comment (by mpickering): Phil makes a good point about where the semantic information should be embedded. In fact, this semantic information is already there in two cases, which flag the warning was caused by and the position of the error (see `TcRnMonad.add_warn_at`). In fact, looking at `ErrMsg`, there is already a lot of semantic information present there as well. These errors are then caught by `ioMsgMaybe` in `HscMain` and reported by `throwErrors` where the information is somehow lost but I have to go! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8809#comment:54 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler