//ww:error "#34: append() struct element source shape unsupported (rule-7)"
package main;
type box = struct { pc: size, a: i64 };
fn mk() box = { return box { pc = 1, a = 2 }; };
export fn main() i32 = {
	let bs: []box = [];
	append(bs, mk());
	return 0;
};