#12600: Overloaded method causes insufficient specialization -------------------------------------+------------------------------------- Reporter: akio | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: 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 nfrisby): With GHC 7.10.2, adding another method to the class results in `foo` being as specialized as expected. I therefore suspect this ticket is due to the Specialise pass interacting poorly with casts (dictionaries for classes with one method and no superclasses are implemented as a newtype). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12600#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler