#15231: UndecidableInstances validity checking is wrong in the presence of QuantifiedConstraints -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.5 checker) | Keywords: Resolution: fixed | QuantifiedConstraints Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: GHC rejects | Test Case: quantified- valid program | constraints/T15231 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4819 Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * testcase: => quantified-constraints/T15231 * status: patch => closed * resolution: => fixed * milestone: 8.8.1 => 8.6.1 Comment: Actually, this is //in// GHC 8.6, so this is fixed. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15231#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler