#12850: Panic with unboxed integers and ghci -------------------------------------+------------------------------------- Reporter: monoidal | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: GHCi crash Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Attempting to load the following file in ghci causes a panic in getIdFromTrivialExpr. Tested in GHC 8.0.1 and HEAD. {{{ {-# LANGUAGE ExplicitForAll, MagicHash, KindSignatures #-} import GHC.Types (RuntimeRep(..), TYPE) f :: forall (x :: TYPE 'IntRep). x -> x f x = x g = () where h = f 0# }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12850 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler