//ww:run-exit 71
package main;
type holder = struct { tag: i64, xs: []i64 };
fn addspine(q: *[]holder, i: i64, v: i64) void = {
	append((*q)[i].xs, v);
};
export fn main() i32 = {
	let hs: []holder = [];
	let h0: holder = holder { tag = 1, xs = [] };
	append(hs, h0);
	addspine(&hs, 0, 41);
	addspine(&hs, 0, 43);
	let hp: *holder = &hs[0];
	let g: []i64 = hp.xs;
	if (len(g) != 2) { return 1; };
	if (g[0] != 41 || g[1] != 43) { return 2; };
	if (hp.tag != 1) { return 3; };
	return 71;
};