#12224: Replace placeHolderPunRhs with a PlaceHolder value -------------------------------------+------------------------------------- Reporter: alanz | Owner: alanz Type: task | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 (Parser) | 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 RyanGlScott): alanz, can you show me the diff? From the error message, I'm wondering if you're trying to do something like `instance Functor (HsRecField' id)`, which won't work. You need to instantiate `id` with a concrete type in each `Functor` instance in order to `PostRn id` to reduce enough. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12224#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler