Resource Leak in Circular std::shared_ptr References

#include <iostream>
#include <memory>

struct Node {
    int value;
    std::shared_ptr<Node> next;
    Node(int val) : value(val), next(nullptr) {}
};

std::shared_ptr<Node> createNode(int value, std::shared_ptr<Node> next = nullptr) {
    auto node = std::make_shared<Node>(value);
    node->next = next;
    if (next) next->next = node; // Circular reference
    return node;
}

int main() {
    auto node1 = createNode(1);
    auto node2 = createNode(2, node1);
    node1->next = node2; // Circular reference
    return 0;
}