#14742: Unboxed sums can treat Word#s as Int#s -------------------------------------+------------------------------------- Reporter: duog | Owner: osa1 Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Resolution: | Keywords: UnboxedSums Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by osa1): `RuntimeRep` is much older than unboxed sums and completely unrelated. Apparently it's used to generate "hints" for ABI calls (see `primRepForeignHint`). It may be used in C codegen (maybe to give an argument type `int32_t` instead of `uint32_t` etc.), but other than that I'm not sure if any of the platforms GHC supports have different ABIs for passing ints vs. words. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14742#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler