ref: d534f4ba7940abe04a5e8e12b3b41a86dc0a7107
dir: /libstd/waitstatus+osx.myr/
use "die.use" pkg std = type waitstatus = union `Waitexit int32 `Waitsig int32 `Waitstop int32 ;; const waitstatus : (st : int32 -> waitstatus) ;; const waitstatus = {st match st & 0o177 | 0: -> `Waitexit (st >> 8) | 0o177:-> `Waitstop (st >> 8) | sig: -> `Waitsig sig ;; die("unreachable") }