#13415: Instance declarations don't recognize named wildcards -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: patch Priority: normal | Milestone: 8.4.1 Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Poor/confusing | Unknown/Multiple error message | Test Case: Blocked By: | Blocking: Related Tickets: #13324 | Differential Rev(s): Phab:D3332 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj):
will get the immediate benefit of having better error messages
Why will the error messages get better? Can you give an example? Is that an argument for putting wildcards everywhere? Why couldn't we just improve the error messages for `LHsSigType`? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13415#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler