//ww:run-exit 7
package main;
type pt = struct { x: i32, y: i32, z: i64 };
export fn main() i32 = {
	let xs: []pt = [];
	append(xs, pt { x = 1, y = 2, z = 5 });
	append(xs, pt { x = 3, y = 4, z = 7 });
	return (xs[0].z + xs[1].z): i32 - xs[0].x - xs[1].y;
};