#11977: ghc doesn't agree with its own inferred pattern type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 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): I had always taken it for granted that a pattern synonym described a data type, not a function. It's hard to pattern match in an interesting way on a function, short of calling it I suppose. Lacking compelling examples, I'm inclined to add the requirement that the result type of a pattern synonym is a data type. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11977#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler