ref: 2956d456959512a3e8b550899465395e033f7929
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") }