#14715: GHC 8.4.1-alpha regression with PartialTypeSignatures -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.4.1 Component: Compiler (Type | Version: 8.4.1-alpha1 checker) | Keywords: Resolution: | PartialTypeSignatures Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"e7c3878dacbad8120aacbe4423857b5ca9b43eb4/ghc" e7c3878d/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="e7c3878dacbad8120aacbe4423857b5ca9b43eb4" Move zonkWC to the right place in simplfyInfer runTcSWithEvBinds does some unification, so the zonkWC must be after, not before! Yikes. An outright bug. This fixes Trac #14715. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14715#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler