pointer_deleter05.pass.cpp [plain text]
#include <memory>
#include <cassert>
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;
class Deleter
{
int state_;
public:
Deleter() : state_(5) {}
int state() const {return state_;}
void operator()(A* p) {delete p;}
};
int main()
{
{
B* p = new B;
assert(A::count == 1);
assert(B::count == 1);
std::unique_ptr<A, Deleter> s(p, Deleter());
assert(s.get() == p);
assert(s.get_deleter().state() == 5);
}
assert(A::count == 0);
assert(B::count == 0);
}