#11480: UndecidableSuperClasses causes the compiler to spin with UndecidableInstances -------------------------------------+------------------------------------- Reporter: ekmett | Owner: Type: bug | Status: closed Priority: normal | Milestone: 8.0.1 Component: Compiler (Type | Version: 8.0.1-rc1 checker) | Keywords: PolyKinds, Resolution: fixed | UndecidableSuperClasses Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: GHC rejects | Test Case: valid program | typecheck/should_compile/T11480, | polykinds/T11480a Blocked By: | Blocking: Related Tickets: #10318 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: merge => closed * resolution: => fixed * milestone: => 8.0.1 Comment: Cherry-picked to `ghc-8.0` as 6217147e0895e98b08e597660ea941a544943a4d and e37b571baabf18621eb3b471fddc015a021ecf46. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11480#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler