#16059: checkValidType is defeated by a type synonym -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler (Type | Version: 8.7 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts | Unknown/Multiple invalid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): Silly me. I looked quickly and assumed that the problem was the lack of a `-XQuantifiedConstraints`. This is clearly wrong. Bah. I guess I take back my comment:5 then, as I can't see any better way out of this mess other than to implement kind-level constraints, which, in turn, requires dependent types. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16059#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler