File: swap.pass.cpp

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11

// <propagate_const>

// template <class T> constexpr void swap(propagate_const<T>& x, propagate_const<T>& y);

#include <experimental/propagate_const>
#include "test_macros.h"
#include "propagate_const_helpers.h"
#include <cassert>

using std::experimental::propagate_const;

bool swap_called = false;
void swap(X &, X &) { swap_called = true; }

int main(int, char**) {
  typedef propagate_const<X> P;
  P p1(1);
  P p2(2);
  swap(p1, p2);
  assert(swap_called);

  return 0;
}