type Holder {
    values: [3]i32,
    scratch: [3]i32,
}

pub fn main() -> Void {
    var holder: Holder = Holder { values: [1, 2, 3], scratch: [0, 0, 0] }
    let filled: usize = std.mem.fillItems(holder.values, 8)
    let copied: usize = std.mem.copyItems(holder.scratch, holder.values)
    expect filled == 3
    expect copied == 3
    expect holder.values[0] == 8
    expect holder.scratch[2] == 8
}