#12081: TypeInType Compile-time Panic -------------------------------------+------------------------------------- Reporter: MichaelK | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1-rc4 Resolution: | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by goldfire): * keywords: => TypeInType Comment: GHC should never panic, so this is certainly a bug. However, your program is not type-correct: any type that classifies a runtime value must have kind `Type` (same as `*`). The type of `f` is given as `(a :: T n)`, which has kind `T n`, not `Type`. I'm not sure what your goal is here, but even without the panic, this program would be rejected by GHC. Thanks for reporting! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12081#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler