#11456: Type application and :set +c command cause panic -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: | TypeApplications GHCi 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 rwbarton): Specifically, leave `Parser.y` unchanged, but at the end of parsing, convert all `HsApp e (HsType t)` to `HsTypeApp e t` (modulo locations, etc.) Then there are no invariants of the form "`HsType` can appear only within `HsApp`", just ones of the form "the output of [stage X] cannot contain [constructor Y]". -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11456#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler