#14771: TypeError reported too eagerly -------------------------------------+------------------------------------- Reporter: hsyl20 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.2.2 checker) | Keywords: Resolution: | CustomTypeErrors Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by diatchki): Ok, so I think issue 2) is not related to custom type errors. I haven't looked at this part of the error reporting much, but I suspect that in some cases GHC forgets that some type expression is the result of evaluating a function. Tricky business. I'd say it'd be better to file a separate ticket for this, especially if you can find a concrete example that might point out to exactly what we may fix. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14771#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler