//ww:run-exit 5
package main;
type box = struct { t: (str | int), n: int };
let g: box = box { t = 0, n = 5 };
fn main() i32 = {
	g.t = "hello";
	match (g.t) {
	case let s: str => return len(s): i32;
	case int => return 99;
	};
};