#12390: List rules for `Coercible` instances -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Iceland_jack): The Coercible class is special in other ways too, there is also [https://phabricator.haskell.org/diffusion/GHC/browse/master/libraries /ghc-prim/GHC/Types.hs;54c95ffcb2cf392df33d2ec397e2301c005ca406$84 no syntax for ~#R] {{{#!hs class a ~R# b => Coercible (a :: k) (b :: k) }}} making it difficult to get more information about `~R#`. (#12023) Some of this might be worth noting in `:info`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12390#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler