libstdc++-v3/testsuite/experimental/propagate_const/assignment/move.cc

   1 // { dg-do run { target c++14 } }
   2
   3 // Copyright (C) 2015-2016 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a moved_to of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <experimental/propagate_const>
  21 #include <testsuite_hooks.h>
  22 #include <utility>
  23 #include <memory>
  24
  25 using std::experimental::propagate_const;
  26 using std::unique_ptr;
  27
  28 int main()
  29 {
  30   const int dummy{42};
  31   propagate_const<const int*> test1;
  32   test1 = std::move(&dummy);
  33   test1 = &dummy;
  34   VERIFY(test1.get() == &dummy);
  35   propagate_const<const int*> test2;
  36   test2 = std::move(test1);
  37   VERIFY(test1.get() == &dummy);
  38   VERIFY(test2.get() == &dummy);
  39   propagate_const<const int*> test3;
  40   test3 = std::move(test2);
  41   VERIFY(test1.get() == &dummy);
  42   VERIFY(test2.get() == &dummy);
  43   VERIFY(test3.get() == &dummy);
  44   propagate_const<unique_ptr<const int>> test4;
  45   test4 = std::make_unique<int>(666);
  46 }