#8299: Add richer data model address arithmetic: AddrDiff and AddrInt (ie d Int_ptr_diff and Int_ptr_size) ----------------------------+---------------------------------------------- Reporter: carter | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: high | Version: 7.6.3 Component: | Keywords: Compiler | Architecture: Unknown/Multiple Resolution: | Difficulty: Project (more than a week) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: 8287 | ----------------------------+---------------------------------------------- Comment (by simonpj): Presumably an `Addr#` is wide enough to contain an offset? So perhaps we should use `Addr#` instead of `Int#` for address differences? We could have and `AddrDiff#` type, but then we'd need arithmetic over it etc. Maybe just a type synonym for `Addr#`? Anyway feel free to propose a concrete design. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8299#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler