std::function with std::bind causing stack overflow in recursive lambda with C++20
I'm trying to configure I'm experiencing a stack overflow when using `std::function` combined with `std::bind` to create a recursive lambda function in C++20. The recursion seems to work fine for a couple of iterations, but then it crashes with a stack overflow behavior. Here's a simplified version of the code that illustrates the question: ```cpp #include <iostream> #include <functional> int main() { std::function<int(int)> factorial; factorial = std::bind([&factorial](int n) { if (n <= 1) return 1; return n * factorial(n - 1); }, std::placeholders::_1); std::cout << factorial(5) << std::endl; // Outputs 120 std::cout << factorial(10) << std::endl; // Outputs 3628800 std::cout << factorial(20) << std::endl; // Causes stack overflow! return 0; } ``` I've tried adjusting the recursion limit by changing the input values, but the program still crashes when calculating larger values like `factorial(20)`. I suspect this might be due to the way `std::bind` is holding onto the lambda recursively, causing the stack to grow uncontrollably. I also considered using `std::shared_ptr` for managing the lambda's lifetime, but I am unsure if that would really help in this context. Is there a better way to implement a recursive function using lambdas and `std::function` in C++20 without running into stack overflows? Any suggestions or best practices would be greatly appreciated! I'm working on a web app that needs to handle this. What's the correct way to implement this?