#9288: Type class overlapping instances check doesn't understand type equality ------------------------------------------------+-------------------------- Reporter: ezyang | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler (Type checker) | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts invalid program | Unknown/Multiple Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: ------------------------------------------------+-------------------------- Changes (by aavogt): * cc: vogt.adam@… (added) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9288#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler