#15441: Data type with phantoms using TypeInType isn't coercible -------------------------------------+------------------------------------- Reporter: glittershark | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.2 Resolution: | Keywords: Roles Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by goldfire): * keywords: => Roles Comment: That looks even more suspect -- my guess is that inferring a phantom there wouldn't be sound. Hopefully we'll have a worked out theory for roles and dependency in the next few months (there's active work going on here), but we're not there yet. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15441#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler