libstdc++-v3/testsuite/23_containers/multimap/modifiers/swap.cc

   1 // Copyright (C) 2004, 2005 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 #include <map>
  20 #include <testsuite_hooks.h>
  21
  22 struct T { int i; };
  23
  24 // T must be LessThanComparable to pass concept-checks
  25 bool operator<(T l, T r) { return l.i < r.i; }
  26
  27 int swap_calls;
  28
  29 namespace std
  30 {
  31   template<>
  32     void
  33     multimap<T, int>::swap(multimap<T, int>&)
  34     { ++swap_calls; }
  35 }
  36
  37 // Should use multimap specialization for swap.
  38 void test01()
  39 {
  40   bool test __attribute__((unused)) = true;
  41   std::multimap<T, int> A;
  42   std::multimap<T, int> B;
  43   swap_calls = 0;
  44   std::swap(A, B);
  45   VERIFY(1 == swap_calls);
  46 }
  47
  48 // Should use multimap specialization for swap.
  49 void test02()
  50 {
  51   bool test __attribute__((unused)) = true;
  52   using namespace std;
  53   multimap<T, int> A;
  54   multimap<T, int> B;
  55   swap_calls = 0;
  56   swap(A, B);
  57   VERIFY(1 == swap_calls);
  58 }
  59
  60 // See c++/13658 for background info.
  61 int main()
  62 {
  63   test01();
  64   test02();
  65   return 0;
  66 }