hack

#include <iostream>
#include <sstream>
#include <math.h>
#include <memory>
#include <memory.h>

using namespace std;

struct shared_memory {
    shared_memory() {
        ::memset(this, 0, sizeof(shared_memory));
        frequency = 88;
    }

    int frequency;
    int rssi;
    int bullcrap;
    char security[8000];
    int security_length;
};

class receiver {
private:
    int frequency;

public:

    receiver() {
        frequency = 99;
    }

    int get_frequency() {
        return frequency;
    }

    int set_frequency(int value) {
        frequency = value;
    }
};

class terminal {
private:

    std::shared_ptr<::receiver> receiver;

public:
    terminal() {
        receiver = std::make_shared<::receiver>();
    }

    std::shared_ptr<::receiver> get_receiver() {
        return receiver;
    }
};

shared_ptr<::receiver> foo() {
    terminal* t = new terminal();
    shared_ptr<::receiver> r = t->get_receiver();
    cout << "use count " << r.use_count() << endl;
    delete t;
    cout << "use count " << r.use_count() << endl;

    return r;
}

int main() { 
    shared_ptr<::receiver> r = foo();
    cout << r->get_frequency() << endl;
    cout << r.use_count() << endl;

    shared_ptr<::shared_memory> shared_memory = std::make_shared<::shared_memory>();
    cout << shared_memory.use_count() << endl;
    cout << shared_memory->frequency << endl;
    shared_memory->frequency = 44;
    shared_ptr<::shared_memory> shared_memory2 = shared_memory;
    cout << shared_memory.use_count() << endl;
    shared_memory2 = nullptr;
    cout << shared_memory.use_count() << endl;
    cout << shared_memory->frequency << endl;
}