ref: dab3c8332f7e10f9cb5f22f85025e8e5ee7e9004 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)) }