#12374: Type holes show incorrect type in GHCi -------------------------------------+------------------------------------- Reporter: crockeea | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: GHCi | Version: 8.0.1 Resolution: invalid | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: 9479, 9091 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by simonpj): * status: new => closed * resolution: => invalid Comment: GHCi has type-class defaulting rules, described [http://downloads.haskell.org/~ghc/master/users-guide/ghci.html#type- defaulting-in-ghci here in the manual]. I think that's all that is happening here, so it's working as specified. Maybe the specification isn't right, but defaulting `Show` to `()` was driven by examples like {{{
show [] }}} I'll close as invalid for now.
-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12374#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler