owner_before_shared_ptr.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <memory>
11
12// shared_ptr
13
14// template <class U> bool owner_before(shared_ptr<U> const& b) const;
15
16#include <memory>
17#include <cassert>
18
19int main()
20{
21    const std::shared_ptr<int> p1(new int);
22    const std::shared_ptr<int> p2 = p1;
23    const std::shared_ptr<int> p3(new int);
24    assert(!p1.owner_before(p2));
25    assert(!p2.owner_before(p1));
26    assert(p1.owner_before(p3) || p3.owner_before(p1));
27    assert(p3.owner_before(p1) == p3.owner_before(p2));
28}
29