Re: [GHC] #10868: Make GHC generics capable of handling unboxed types

#10868: Make GHC generics capable of handling unboxed types -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: RyanGlScott Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8468 | Differential Rev(s): Phab:D1239 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"6cde981a8788b225819be28659caddc35b77972d/ghc" 6cde981/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="6cde981a8788b225819be28659caddc35b77972d" Make GHC generics capable of handling unboxed types This adds a data family (`URec`) and six data family instances (`UAddr`, `UChar`, `UDouble`, `UFloat`, `UInt`, and `UWord`) which a `deriving Generic(1)` clause will generate if it sees `Addr#`, `Char#`, `Double#`, `Float#`, `Int#`, or `Word#`, respectively. The programmer can then provide instances for these data family instances to provide custom implementations for unboxed types, similar to how derived `Eq`, `Ord`, and `Show` instances currently special-case unboxed types. Fixes #10868. Test Plan: ./validate Reviewers: goldfire, dreixel, bgamari, austin, hvr, kosmikus Reviewed By: dreixel, kosmikus Subscribers: simonpj, thomie Differential Revision: https://phabricator.haskell.org/D1239 GHC Trac Issues: #10868 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10868#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler