#15806: Impredicativity behavior in `:k` command in GHCi -------------------------------------+------------------------------------- Reporter: ningning | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #14859 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): I think the `:k` should be rejected to -- maybe we are missing a call to `checkValidType` somewhere? Yes if we had explicit impredicativity we should be ok -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15806#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler