#include <vector>
#include <complex>
#include "algorithm"

int main()
{
    std::vector<std::complex<float> > v;
    std_::stable_sort(v.begin(), v.end());
}

// (C) Copyright Jeremy Siek 2000.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)