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// Copyright (C) 2010 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/>.

// 20.7.11 Function template bind

// { dg-options "-std=gnu++0x" }

#include <functional>

#include <testsuite_hooks.h>

// target must be invoked with cv-quals of call wrapper

struct X

{

  int operator()() { return 0; }

  int operator()() const { return 1; }

  int operator()() volatile { return 2; }

  int operator()() const volatile { return 3; }

  int operator()(int, int, int) { return 0; }

  int operator()(int, int, int) const { return 1; }

  int operator()(int, int, int) volatile { return 2; }

  int operator()(int, int, int) const volatile { return 3; }

};

using std::placeholders::_1;

using std::placeholders::_2;

void test01()

{

  bool test __attribute__((unused)) = true;

  auto b0 = std::bind(X());

  VERIFY( b0() == 0 );

  const auto b1 = std::bind(X());

  VERIFY( b1() == 1 );

  volatile auto b2 = std::bind(X());

  VERIFY( b2() == 2 );

  const volatile auto b3 = std::bind(X());

  VERIFY( b3() == 3 );

}

void test02()

{

  bool test __attribute__((unused)) = true;

  auto b0 = std::bind<int>(X());

  VERIFY( b0() == 0 );

  const auto b1 = std::bind<int>(X());

  VERIFY( b1() == 1 );

  volatile auto b2 = std::bind<int>(X());

  VERIFY( b2() == 2 );

  const volatile auto b3 = std::bind<int>(X());

  VERIFY( b3() == 3 );

}

void test03()

{

  bool test __attribute__((unused)) = true;

  auto b0 = std::bind(X(), 0, _1, _2);

  VERIFY( b0(0, 0) == 0 );

  const auto b1 = std::bind(X(), _1, 0, _2);

  VERIFY( b1(0, 0) == 1 );

  volatile auto b2 = std::bind(X(), _1, _2, 0);

  VERIFY( b2(0, 0) == 2 );

  const volatile auto b3 = std::bind(X(), _1, 0, _2);

  VERIFY( b3(0, 0) == 3 );

}

void test04()

{

  bool test __attribute__((unused)) = true;

  auto b0 = std::bind<int>(X(), 0, _1, _2);

  VERIFY( b0(0, 0) == 0 );

  const auto b1 = std::bind<int>(X(), _1, 0, _2);

  VERIFY( b1(0, 0) == 1 );

  volatile auto b2 = std::bind<int>(X(), _1, _2, 0);

  VERIFY( b2(0, 0) == 2 );

  const volatile auto b3 = std::bind<int>(X(), _1, 0, _2);

  VERIFY( b3(0, 0) == 3 );

}

int main()

{

  test01();

  test02();

  test03();

  test04();

  return 0;

}