libstdc++-v3/testsuite/25_algorithms/iter_swap/20577.cc

   1 // Copyright (C) 2005-2014 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 #include <algorithm>
  19 #include <vector>
  20 #include <testsuite_hooks.h>
  21
  22 void
  23 test1()
  24 {
  25   bool test __attribute__((unused)) = true;
  26
  27   std::vector<bool> v;
  28   v.push_back(true);
  29   v.push_back(false);
  30   std::iter_swap(v.begin(), v.begin() + 1);
  31   VERIFY( v[0] == false && v[1] == true );
  32 }
  33
  34 void
  35 test2()
  36 {
  37   bool test __attribute__((unused)) = true;
  38
  39   std::vector<int> v;
  40   v.push_back(1);
  41   v.push_back(2);
  42   std::iter_swap(v.begin(), v.begin() + 1);
  43   VERIFY( v[0] == 2 && v[1] == 1 );
  44 }
  45
  46 int int_swap_count;
  47
  48 struct X {};
  49 void swap(X&, X&)
  50 { ++int_swap_count; }
  51
  52 void
  53 test3()
  54 {
  55   bool test __attribute__((unused)) = true;
  56
  57   int_swap_count = 0;
  58   X i, j;
  59   std::iter_swap(&i, &j);
  60   VERIFY( int_swap_count == 1 );
  61 }
  62
  63 // libstdc++/20577
  64 int main()
  65 {
  66   test1();
  67   test2();
  68   test3();
  69   return 0;
  70 }