#8281: The impossible happened: primRepToFFIType -------------------------------------+------------------------------------- Reporter: tibbe | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 7.6.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by winter): I'd really like to see some documents on how `UnliftedFFITypes` interact with GC and an `unsafe` FFI call. According to my understanding, passing `ByteArray#` is safe here because GC can't happen during an `unsafe` call. Am i right on this? Or perhaps RTS do some thing else to prevent GC move the `ByteArray#` during FFI when `UnliftedFFITypes` enable? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8281#comment:14 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler