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

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-atomic-builtins "" }
   3
   4 // Copyright (C) 2009 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <exception>
  22 #include <utility>
  23 #include <testsuite_hooks.h>
  24
  25 // Verify move construction and assignment are efficient and do not copy.
  26 // This behaviour is a GNU extension provided for efficiency.
  27 void test01()
  28 {
  29   bool test = true;
  30
  31   std::exception_ptr p1 = std::copy_exception(test);
  32   std::exception_ptr p2 = std::move(p1);
  33   VERIFY( p1 == 0 );
  34   VERIFY( !(p2 == 0) );
  35
  36   p1 = std::move(p2);
  37   VERIFY( !(p1 == 0) );
  38   VERIFY( p2 == 0 );
  39 }
  40
  41 int main()
  42 {
  43   test01();
  44   return 0;
  45 }