#8827: Inferring Safe mode with GeneralizedNewtypeDeriving is wrong -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8226, #8745 | Differential Revisions: -------------------------------------+------------------------------------- Comment (by oerjan): I was hoping that the cutoff at explicit role annotations would mitigate the efficiency issue - presumably most major packages would have them, or the pragma to make implicit ones explicit. Otherwise, perhaps the interface files could list the needed constructors for an implicit role parameter? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8827#comment:45 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler