//ww:run-exit 77
package main;
type box = struct { pc: size, a: i64, b: i64, x: i64 };
fn addsrc(ds: *[]box, p: *box) void = { append(*ds, *p); };
export fn main() i32 = {
	let b: box = box { pc = 4, a = 40, b = 41, x = 42 };
	let ds: []box = [];
	addsrc(&ds, &b);
	if (len(ds) != 1) { return 1; };
	if (ds[0].pc != 4) { return 2; };
	if (ds[0].a != 40 || ds[0].b != 41 || ds[0].x != 42) { return 3; };
	return 77;
};