#13735: RankNTypes don't work with PatternSynonyms -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: | PatternSynonyms 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 simonpj): Re comment:1, it's unsurprising that {{{ llam f = L (Lam f) }}} with no type signature, does not work. Because `f` needs to have a polytype, and it won't without a type sig. But re the original Description, I agree that the bidirectional definition should go through. I'll take a look. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13735#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler