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

   1 // Copyright (C) 2015-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target { c++11 && { ! c++23 } } } }
  19 // { dg-require-effective-target hosted }
  20
  21 #include <memory>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   char buf[8];
  28
  29   std::declare_reachable(buf);
  30   char* p = std::undeclare_reachable(buf);
  31   VERIFY( p == buf );
  32
  33   std::declare_no_pointers(p, sizeof(buf));
  34   std::undeclare_no_pointers(p, sizeof(buf));
  35
  36   std::pointer_safety ps = std::get_pointer_safety();
  37   VERIFY( ps == std::pointer_safety::relaxed );
  38 }
  39
  40 int
  41 main()
  42 {
  43   test01();
  44 }