#11549: Add -fshow-runtime-rep -------------------------------------+------------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: closed Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 8.1 Resolution: fixed | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1961 Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Do you think it's worth special-casing this kind of behavior with `-XTypeApplications` as well? Currently, it's quite easy to leak `RuntimeRep`: {{{ $ /opt/ghc/8.0.1/bin/ghci GHCi, version 8.0.0.20160324: http://www.haskell.org/ghc/ :? for help Loaded GHCi configuration from /home/ryanglscott/.ghci λ> :t undefined undefined :: GHC.Stack.Types.HasCallStack => a λ> :set -XTypeApplications λ> :t undefined @Int <interactive>:1:12: error: • Expected kind ‘GHC.Types.RuntimeRep’, but ‘Int’ has kind ‘*’ • In the type ‘Int’ In the expression: undefined @Int }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11549#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler