function test()
    local a, b, c, d, e, f, g
    local ign

    local function mk(n)
        local res = {}
        for i=1,n do table.insert(res, 'x') end
        res = table.concat(res)
        print(#res)
        return res
    end

    a = mk(0)
    b = mk(1)
    c = mk(16)
    d = mk(256)
    e = mk(4096)
    f = mk(65536)
    g = mk(1048576)

    for i=1,1e7 do
        ign = (a == a);
        ign = (a == b);
        ign = (a == c);
        ign = (a == d);
        ign = (a == e);
        ign = (a == f);
        ign = (a == g);

        ign = (b == b);
        ign = (b == c);
        ign = (b == d);
        ign = (b == e);
        ign = (b == f);
        ign = (b == g);

        ign = (c == c);
        ign = (c == d);
        ign = (c == e);
        ign = (c == f);
        ign = (c == g);

        ign = (d == d);
        ign = (d == e);
        ign = (d == f);
        ign = (d == g);

        ign = (e == e);
        ign = (e == f);
        ign = (e == g);

        ign = (f == f);
        ign = (f == g);

        ign = (g == g);
    end
end

test()