#8506: misleading error message for duplicate type class instances --------------------------------------------+------------------------------ Reporter: carter | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type checker) | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by carter): GHC should give an erro about multiple class instances, but I guess the renamer phase hits the constants in the instance heads before that multiple declaration conflict would happen. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8506#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler