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 
main()19 int 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