#13083: Constraint solving failure with Coercible + type family + newtype -------------------------------------+------------------------------------- Reporter: conal | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: | Keywords: Coercible Operating System: MacOS X | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): I'm afraid I don't see how comment:1 applies. The type of `foo` seems to be a straightforward specialization of the type of `bar`. So it seems this should work. Confirmed reproducible in a fairly recent HEAD. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13083#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler