//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // <utility> // template <class T1, class T2> struct pair // template <class T1, class T2> void swap(pair<T1, T2>& x, pair<T1, T2>& y); #include <utility> #include <cassert> int main() { { typedef std::pair<int, short> P1; P1 p1(3, 4); P1 p2(5, 6); swap(p1, p2); assert(p1.first == 5); assert(p1.second == 6); assert(p2.first == 3); assert(p2.second == 4); } }