| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <memory> |
| |
| // unique_ptr |
| |
| // Test unique_ptr converting move ctor |
| |
| #include <memory> |
| #include <utility> |
| #include <cassert> |
| |
| // test converting move ctor. Should only require a MoveConstructible deleter, or if |
| // deleter is a reference, not even that. |
| // Explicit version |
| |
| struct A |
| { |
| static int count; |
| A() {++count;} |
| A(const A&) {++count;} |
| virtual ~A() {--count;} |
| }; |
| |
| int A::count = 0; |
| |
| struct B |
| : public A |
| { |
| static int count; |
| B() {++count;} |
| B(const B&) {++count;} |
| virtual ~B() {--count;} |
| }; |
| |
| int B::count = 0; |
| |
| template <class T> |
| class CDeleter |
| { |
| int state_; |
| |
| CDeleter(CDeleter&); |
| CDeleter& operator=(CDeleter&); |
| public: |
| |
| CDeleter() : state_(5) {} |
| |
| int state() const {return state_;} |
| void set_state(int s) {state_ = s;} |
| |
| void operator()(T* p) {delete p;} |
| }; |
| |
| int main() |
| { |
| { |
| CDeleter<A> d; |
| const std::unique_ptr<B, CDeleter<A>&> s(new B, d); |
| A* p = s.get(); |
| std::unique_ptr<A, CDeleter<A>&> s2(s); |
| assert(s2.get() == p); |
| assert(s.get() == 0); |
| assert(A::count == 1); |
| assert(B::count == 1); |
| d.set_state(6); |
| assert(s2.get_deleter().state() == d.state()); |
| assert(s.get_deleter().state() == d.state()); |
| } |
| assert(A::count == 0); |
| assert(B::count == 0); |
| } |