ref: 51d5a41b3f09a15fef2f427a129f877365d10bf6
dir: /libstd/waitstatus-freebsd.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) | 0x7f:-> `Waitstop (st >> 8) | sig: -> `Waitsig sig ;; die("unreachable") }