libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <utility>
  10
  11 // template <class T1, class T2> struct pair
  12
  13 // template <class T1, class T2> void swap(pair<T1, T2>& x, pair<T1, T2>& y);
  14
  15 #include <utility>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 int main(int, char**)
  21 {
  22     {
  23         typedef std::pair<int, short> P1;
  24         P1 p1(3, static_cast<short>(4));
  25         P1 p2(5, static_cast<short>(6));
  26         swap(p1, p2);
  27         assert(p1.first == 5);
  28         assert(p1.second == 6);
  29         assert(p2.first == 3);
  30         assert(p2.second == 4);
  31     }
  32
  33   return 0;
  34 }