libstdc++-v3/testsuite/18_support/exception_ptr/move.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2009-2024 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 copy 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 <exception>
  21 #include <utility>
  22 #include <testsuite_hooks.h>
  23
  24 // Verify move construction and assignment are efficient and do not copy.
  25 // This behaviour is a GNU extension provided for efficiency.
  26 void test01()
  27 {
  28   bool test = true;
  29
  30   std::exception_ptr p1 = std::make_exception_ptr(test);
  31   std::exception_ptr p2 = std::move(p1);
  32   VERIFY( p1 == 0 );
  33   VERIFY( !(p2 == 0) );
  34
  35   p1 = std::move(p2);
  36   VERIFY( !(p1 == 0) );
  37   VERIFY( p2 == 0 );
  38 }
  39
  40 int main()
  41 {
  42   test01();
  43   return 0;
  44 }