35 lines · 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-exception6//7//===----------------------------------------------------------------------===//8 9// <utility>10 11// template <class T1, class T2> struct pair12 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 20int 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}35