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[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 24_iterators / move_iterator / dr3265.cc

// Copyright (C) 2020-2024 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/>.

// { dg-do run { target c++11 } }

#include <iterator>

struct Iter
{
  using iterator_category = std::forward_iterator_tag;
  using value_type = int;
  using pointer = int*;
  using reference = int&;
  using difference_type = std::ptrdiff_t;

  Iter() { }

  // Construction from int* should not be used:
  Iter(int*) { throw 1; }

  // Assignment from int* is OK:
  Iter& operator=(int*) { return *this; }

  Iter& operator++() { return *this; }
  Iter operator++(int) { return *this; }
  int& operator*() const { static int i; return i; }
  int* operator->() const { return &**this; }

  template<int N> friend bool operator==(Iter, Iter);
};

void test01()
{
  std::move_iterator<Iter> m;
  int i = 0;
  m = std::make_move_iterator(&i); // Should use assignment not construction
}

int main()
{
  test01();
}