1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <stack>
11
12// template <class T, class Container>
13//   void swap(stack<T, Container>& x, stack<T, Container>& y);
14
15#include <stack>
16#include <cassert>
17
18template <class C>
19C
20make(int n)
21{
22    C c;
23    for (int i = 0; i < n; ++i)
24        c.push(i);
25    return c;
26}
27
28int main()
29{
30    std::stack<int> q1 = make<std::stack<int> >(5);
31    std::stack<int> q2 = make<std::stack<int> >(10);
32    std::stack<int> q1_save = q1;
33    std::stack<int> q2_save = q2;
34    swap(q1, q2);
35    assert(q1 == q2_save);
36    assert(q2 == q1_save);
37}
38