#8356: Strangeness with FunDeps ----------------------------------------------+---------------------------- Reporter: ksf | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects valid program | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ----------------------------------------------+---------------------------- Comment (by ksf): Yes, the more specific error message looks very helpful.
In that case, perhaps you intended
Indeed, I did. That doesn't work for the (overlapping) recursive case up to the match, though: {{{ instance Replaced sy a b xs ys => Replaced sy a b ((sy ::: c) ': xs) ((sy ::: d) ': ys) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8356#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler