//ww:run-exit 78
package main;
type box = struct { pc: size, a: i64, b: i64, x: i64 };
export fn main() i32 = {
	let lo: i64 = 111;
	let bs: []box = [];
	let hi: i64 = 222;
	append(bs, box { pc = 9, a = 100, b = 200, x = 300 });
	let i: i32 = 0;
	for (i < 33) {
		append(bs, bs[i]);
		i += 1;
	};
	if (len(bs) != 34) { return 1; };
	if (bs[0].pc != 9 || bs[33].pc != 9) { return 2; };
	if (bs[17].a != 100 || bs[33].b != 200) { return 3; };
	if (bs[33].x != 300) { return 4; };
	if (lo != 111 || hi != 222) { return 5; };
	return 78;
};