ref: 5a07a949b3667e0f0b97156035104d35f6aea2a5
dir: /libstd/waitstatus-osx.myr/
use "die.use" pkg std = type waitstatus = union `Waitexit int64 `Waitsig int64 `Waitstop int64 ;; const waitstatus : (st : int64 -> waitstatus) ;; const waitstatus = {st match st & 0o177 | 0: -> `Waitexit (st >> 8) | 0o177:-> `Waitstop (st >> 8) | sig: -> `Waitsig sig ;; die("unreachable") }