libstdc++-v3/testsuite/20_util/tuple/cons/assignment.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2007-2022 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 // Tuple
  21
  22 #include <tuple>
  23 #include <testsuite_hooks.h>
  24
  25 using namespace std;
  26
  27 int
  28 main()
  29 {
  30   tuple<> ta;
  31   tuple<> tb;
  32   ta = tb;
  33
  34   tuple<int> tc(1);
  35   tuple<int> td(0);
  36   td = tc;
  37   VERIFY(get<0>(td) == 1);
  38
  39   int i=0;
  40   tuple<int&> te(i);
  41   te = tc;
  42   VERIFY(i == 1);
  43
  44   tuple<const int&> tf(tc);
  45
  46   get<0>(tc) = 2;
  47   VERIFY(get<0>(tf) == 2);
  48   tuple<double> tg;
  49   tg = tc;
  50 }