#10018: Cannot define custom fixity for infix data constructors in GHCi -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.10.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: #9830 | Differential Revisions: -------------------------------------+------------------------------------- Comment (by RyanGlScott): I'm not sure if this is related, but when I tried declaring the above data type with {{{infixr 5 :@:}}} first, GHCi fails to parse it: {{{ $ ghci GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help λ> infixr 5 :@:; data Infix a b = a :@: b deriving Show <interactive>:2:1: parse error on input ‘infixr’ }}} It's possible that this bug wouldn't manifest itself if the {{{infixr}}} declaration appeared first, but GHCi won't allow this in the first place, so it's impossible to tell. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10018#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler