#10715: Possible regression in Coercible a (X a) between 7.8 and 7.10 -------------------------------------+------------------------------------- Reporter: inaki | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by inaki): Replying to [comment:10 inaki]:
but it see no way of writing doCoerce in a way that makes ghc 7.10 happy. Well, the "surprising" {{{#!hs doCoerce :: Coercible a (X b) => a -> X a doCoerce = coerce }}} definition works in 7.10, but this does not work in 7.8, which I also want to support in my code if at all possible.
-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10715#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler