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// Copyright (C) 2011 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

#include <vector> 

#include <numeric>

class NaturalParameters

{

public:

  NaturalParameters()

  : m_data(2)

  {  }

  std::vector<double>::const_iterator

  begin() const

  { return m_data.begin(); }

  std::vector<double>::const_iterator

  end() const

  { return m_data.begin(); }

  NaturalParameters&

  operator+=(const NaturalParameters&)

  { return *this; }

private:

  std::vector<double> m_data;

};

inline

NaturalParameters

operator+(const NaturalParameters& a, const NaturalParameters& b)

{

  NaturalParameters tmp = a;

  return tmp += b;

}

// libstdc++/48750

void test01()

{

  // Used to fail in parallel-mode with a segfault.

  for (std::size_t i = 0; i < 1000; ++i)

    {

      std::vector<NaturalParameters> ChildrenNP(1000);

      NaturalParameters init;

      NaturalParameters NP = std::accumulate(ChildrenNP.begin(),

                                             ChildrenNP.end(), init);

    }

}

int main()

{

  test01();

  return 0;

}