libstdc++-v3/testsuite/20_util/pointer_safety/1.cc

// Copyright (C) 2015-2021 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 && { ! c++23 } } } }

#include <memory>
#include <testsuite_hooks.h>

void
test01()
{
  char buf[8];

  std::declare_reachable(buf);
  char* p = std::undeclare_reachable(buf);
  VERIFY( p == buf );

  std::declare_no_pointers(p, sizeof(buf));
  std::undeclare_no_pointers(p, sizeof(buf));

  std::pointer_safety ps = std::get_pointer_safety();
  VERIFY( ps == std::pointer_safety::relaxed );
}

int
main()
{
  test01();
}