#14580: GHC panic (TypeInType) (the 'impossible' happened) -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 8.3 Resolution: fixed | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | polykinds/T14580 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by simonpj): * status: new => closed * testcase: => polykinds/T14580 * resolution: => fixed Comment: HEAD gives {{{ Prelude Data.Kind> type (a <--> b) iso cat = ISO (iso :: cat a b) <interactive>:7:31: error: • Expected kind ‘Cat a’, but ‘(iso :: cat a b)’ has kind ‘cat a b’ • In the first argument of ‘ISO’, namely ‘(iso :: cat a b)’ In the type ‘ISO (iso :: cat a b)’ In the type declaration for ‘<-->’ }}} probably as a result of the patches I pushed yesterday. Hurrah. I've added a regression test, to be on the safe side. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14580#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler