#14203: GHC-inferred type signature doesn't actually typecheck -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.2.1 checker) | Keywords: TypeInType, Resolution: | TypeFamilies Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): I'm well aware of the fact that this is an ambiguous definition. But the point that I'm making (that no one has addressed yet) is that `AllowAmbiguousTypes` should allow GHC to accept such a definition! Replying to [comment:7 simonpj]:
But alas we do not check for ambiguous kinds.
If we don't do this currently, then we should! There are many programs that I can't write because of this restriction. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14203#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler