libstdc++-v3/testsuite/23_containers/vector/modifiers/swap/1.cc

   1 // Copyright (C) 2004-2015 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 <vector>
  19 #include <testsuite_hooks.h>
  20
  21 struct T { int i; };
  22
  23 int swap_calls;
  24
  25 namespace std
  26 {
  27   template<>
  28     void
  29     vector<T, allocator<T> >::swap(vector<T, allocator<T> >&)
  30     { ++swap_calls; }
  31 }
  32
  33 // Should use vector specialization for swap.
  34 void test01()
  35 {
  36   bool test __attribute__((unused)) = true;
  37   std::vector<T> A;
  38   std::vector<T> B;
  39   swap_calls = 0;
  40   std::swap(A, B);
  41   VERIFY(1 == swap_calls);
  42 }
  43
  44 // Should use vector specialization for swap.
  45 void test02()
  46 {
  47   bool test __attribute__((unused)) = true;
  48   using namespace std;
  49   vector<T> A;
  50   vector<T> B;
  51   swap_calls = 0;
  52   swap(A, B);
  53   VERIFY(1 == swap_calls);
  54 }
  55
  56 // See c++/13658 for background info.
  57 int main()
  58 {
  59   test01();
  60   test02();
  61   return 0;
  62 }