#14270: GHC HEAD's ghc-stage1 panics on Data.Typeable.Internal -------------------------------------+------------------------------------- Reporter: hvr | Owner: bgamari Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #14236 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"4bb54a4522d44a81b2c47233f48252bd73c38279/ghc" 4bb54a45/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="4bb54a4522d44a81b2c47233f48252bd73c38279" Avoid creating dependent types in FloatOut This bug was exposed by Trac #14270. The problem and its cure is described in SetLevels, Note [Floating and kind casts]. It's simple and will affect very few programs. But the very fact that it was so unexpected is discomforting. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14270#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler