I have 2 classes. I want to pass this from constructor one class as a parameter to the constructor of another class.

I am aware that the error occurred because shared_from_this() is called before the IkArm object (this) is fully constructed. But I am unable to find out a way in which I an pass the node to the second class after executing the first class. Also I have gone through this question but the relationship of the classes used there is different.

The following is the code:

#include "rclcpp/rclcpp.hpp"

class IkSolver
{
    public:
        IkSolver(std::shared_ptr<rclcpp::Node> node) : node_(node)
        {
            RCLCPP_INFO(node_->get_logger(), "2nd Constructor");                
        }

    private:
        std::shared_ptr<rclcpp::Node> node_;
};

class IkArm : public rclcpp::Node
{
    public:
        IkArm() : Node("IkNode")
        {
            RCLCPP_INFO(this->get_logger(), "1st Constructor");
            
            obj1_ = std::make_shared<IkSolver>(shared_from_this());
            RCLCPP_INFO(this->get_logger(), "Back To 1st Constructor");
        }

    private:
        std::shared_ptr<IkSolver> obj1_;
};


int main(int argc, char * argv[])
{
    rclcpp::init(argc, argv);
    rclcpp::spin(std::make_shared<IkArm>());
    rclcpp::shutdown();
    return 0;
}

I am getting the following error:

[INFO] [1720452645.004303274] [IkNode]: 1st Constructor
terminate called after throwing an instance of 'std::bad_weak_ptr'
  what():  bad_weak_ptr
[ros2run]: Aborted