ref: 1750fba1a4fc55641cfd5a9ced3a33f012ff221f
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") }