#15883: GHC panic: newtype F rep = F (forall (a :: TYPE rep). a) -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.6.2 checker) | Keywords: Resolution: | LevityPolymorphism, TypeInType Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by andrewthad): This is fixed (rather accidentally) by the implementation of the `UnliftedNewtypes` proposal, which is not yet merged. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15883#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler