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 // bool empty() const;
13 
14 #include <queue>
15 #include <cassert>
16 
17 int main()
18 {
19     std::queue<int> q;
20     assert(q.empty());
21     q.push(1);
22     assert(!q.empty());
23     q.pop();
24     assert(q.empty());
25 }
26