//ww:run-exit 62
package main;
type box = struct { pc: size, xs: []size };
fn grab(p: *[]box, i: size) i32 = {
	let h: []size = (*p)[i].xs;
	if (len(h) != 2) { return 1; };
	if (h[0] != (7: size)) { return 2; };
	if (h[1] != (8: size)) { return 3; };
	if ((*p)[i].xs.cap < 2) { return 4; };
	return 0;
};
export fn main() i32 = {
	let src: []size = [];
	append(src, (7: size));
	append(src, (8: size));
	let bs: []box = [];
	append(bs, box { pc = 1, xs = src });
	let rc: i32 = grab(&bs, 0);
	if (rc != 0) { return rc; };
	return 62;
};