//ww:run-exit 5
package main;
type pair = struct { x: i64, y: i64, z: i64 };
type tag = (str | pair);
type holder = struct { e: tag, mark: i32 };
fn main() i32 = {
	let h: holder;
	h.mark = 99;
	h.e = ("hello": tag);
	match (h.e) {
	case let s: str => return s.len: i32;
	case let v: pair => return -1;
	};
};