ref: 4ccc52b8ed3c89262a3ee72bfdd05de1a3d0441c dir: /test/swidencast.myr/
use std /* sign extending cast. should exit with status 99 */ const main = { var u : int8 var v : int32 u = 99 v = u castto(int32) std.exit(v castto(int)) }