#15220: ScopedTypeVariables binds a non-existent variable -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.5 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Hmm. What should happen to an unbound `TyVarTv` unification variable then? The presenting problem was with the old `SigTv`, when a scoped type variable could only be bound to a variable. But we've changed that now - they are `TauTv`s. I'm unsure about exactly how the remaining uses of `TyVarTv` work and whether this issue will arise at all. I suspect that it will not. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15220#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler