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// priority_queue();
13
14// bool empty() const;
15
16#include <queue>
17#include <cassert>
18
19int main()
20{
21    std::priority_queue<int> q;
22    assert(q.empty());
23    q.push(1);
24    assert(!q.empty());
25    q.pop();
26    assert(q.empty());
27}
28