#9562: Type families + hs-boot files = unsafeCoerce -------------------------------------+------------------------------------- Reporter: goldfire | Owner: ezyang Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: TypeFamilies, | SafeHaskell hs-boot Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts | Unknown/Multiple invalid program | Test Case: Blocked By: | Blocking: Related Tickets: #10270 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): rwbarton's comment:16 looks very plausible. I can't quite convince myself that it's right, but I also can't think of a counterexample. It's certainly easier to explain (and likely to implement) than many other solutions mentioned here. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9562#comment:17 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler