Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 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 converting move assignment |
| 15 | |
| 16 | #include <memory> |
| 17 | #include <utility> |
| 18 | #include <cassert> |
| 19 | |
| 20 | struct A |
| 21 | { |
| 22 | static int count; |
| 23 | A() {++count;} |
| 24 | A(const A&) {++count;} |
| 25 | virtual ~A() {--count;} |
| 26 | }; |
| 27 | |
| 28 | int A::count = 0; |
| 29 | |
| 30 | struct B |
| 31 | : public A |
| 32 | { |
| 33 | static int count; |
| 34 | B() {++count;} |
| 35 | B(const B&) {++count;} |
| 36 | virtual ~B() {--count;} |
| 37 | }; |
| 38 | |
| 39 | int B::count = 0; |
| 40 | |
| 41 | int main() |
| 42 | { |
| 43 | { |
| 44 | std::unique_ptr<B> s(new B); |
| 45 | A* p = s.get(); |
| 46 | std::unique_ptr<A> s2(new A); |
| 47 | assert(A::count == 2); |
| 48 | s2 = std::move(s); |
| 49 | assert(s2.get() == p); |
| 50 | assert(s.get() == 0); |
| 51 | assert(A::count == 1); |
| 52 | assert(B::count == 1); |
| 53 | } |
| 54 | assert(A::count == 0); |
| 55 | assert(B::count == 0); |
| 56 | } |