#13416: Unsolved Constraints (initTc) -------------------------------------+------------------------------------- Reporter: sgschlesinger | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Keywords: constraint | Operating System: Linux Architecture: x86_64 | Type of failure: Compile-time (amd64) | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Another bug here: ghc: panic! (the 'impossible' happened) (GHC version 8.0.2 for x86_64-unknown-linux): initTc: unsolved constraints WC {wc_insol = [W] nub_a1U2 :: t_a1U1[tau:1] (CHoleCan: nub)} I've attached the relevant code. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13416 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler