#13885: Template Haskell doesn't freshen GADT type variables properly -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Template Haskell | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Why does this matter? If I write {{{ data T a b where MkT :: [a] -> b -> x -> T x a }}} that's absolutely fine. The 'a' and 'b' in the `MkT` signature have nothing to do with the variables in the head. The latter do not scope over the constructors. Right? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13885#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler