ref: f8040a2ba54ace38a662e104fb677dc72da6d647
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 signal ;; die("unreachable") }