nullptr.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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// <memory>
11
12// unique_ptr
13
14// Test unique_ptr move assignment
15
16#include <memory>
17#include <cassert>
18
19// test assignment from null
20
21struct A
22{
23    static int count;
24    A() {++count;}
25    A(const A&) {++count;}
26    ~A() {--count;}
27};
28
29int A::count = 0;
30
31int main()
32{
33    {
34    std::unique_ptr<A> s2(new A);
35    assert(A::count == 1);
36    s2 = nullptr;
37    assert(A::count == 0);
38    assert(s2.get() == 0);
39    }
40    assert(A::count == 0);
41}
42