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 // <queue>
11 
12 // void swap(queue& q);
13 
14 #include <queue>
15 #include <cassert>
16 
17 template <class C>
18 C
make(int n)19 make(int n)
20 {
21     C c;
22     for (int i = 0; i < n; ++i)
23         c.push(i);
24     return c;
25 }
26 
main()27 int main()
28 {
29     std::queue<int> q1 = make<std::queue<int> >(5);
30     std::queue<int> q2 = make<std::queue<int> >(10);
31     std::queue<int> q1_save = q1;
32     std::queue<int> q2_save = q2;
33     q1.swap(q2);
34     assert(q1 == q2_save);
35     assert(q2 == q1_save);
36 }
37