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//===----------------------------------------------------------------------===//
//
// 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;
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);
}
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