libstdc++-v3/testsuite/20_util/pair/ref_assign.cc

   1 // Copyright (C) 2018 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 } }
  19
  20 #include <utility>
  21 #include <testsuite_hooks.h>
  22
  23 void
  24 test01()
  25 {
  26   typedef std::pair<int&, int> pair_type;
  27   int i = 1;
  28   int j = 2;
  29   pair_type p(i, 3);
  30   const pair_type q(j, 4);
  31   p = q;
  32   VERIFY( p.first == q.first );
  33   VERIFY( p.second == q.second );
  34   VERIFY( i == j );
  35 }
  36
  37 void
  38 test02()
  39 {
  40   typedef std::pair<int, int&> pair_type;
  41   int i = 1;
  42   int j = 2;
  43   pair_type p(3, i);
  44   const pair_type q(4, j);
  45   p = q;
  46   VERIFY( p.first == q.first );
  47   VERIFY( p.second == q.second );
  48   VERIFY( i == j );
  49 }
  50
  51 void
  52 test03()
  53 {
  54   typedef std::pair<int&, int&> pair_type;
  55   int i = 1;
  56   int j = 2;
  57   int k = 3;
  58   int l = 4;
  59   pair_type p(i, j);
  60   const pair_type q(k, l);
  61   p = q;
  62   VERIFY( p.first == q.first );
  63   VERIFY( p.second == q.second );
  64   VERIFY( i == k );
  65   VERIFY( j == l );
  66 }
  67
  68 int
  69 main()
  70 {
  71   test01();
  72   test02();
  73   test03();
  74 }