#9562: Type families + hs-boot files = unsafeCoerce -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: GHC | Blocked By: accepts invalid program | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by ezyang): Richard Eisenberg does it again! Ticket #9422 seems related. I support the proposed solution. (Note that the situation is different for module signatures ala #9252, because when we compile against a signature's hi file we can pull in the original implementation to get its type family instances for a consistency check.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9562#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler