fn fillChunk(tag: u8) -> usize {
    var chunk: [65536]u8 = [0; 65536]
    chunk[0] = tag
    chunk[65535] = tag
    var count: usize = 0
    if chunk[0] == tag && chunk[65535] == tag {
        count = 65536
    }
    return count
}

pub fn main(world: World) -> Void raises {
    var total: usize = 0
    total = total + fillChunk(1_u8)
    total = total + fillChunk(2_u8)
    total = total + fillChunk(3_u8)
    if total == 196608 {
        check world.out.write("frame split helpers ok\n")
    }
}