std::shared_ptr causing memory leaks in lambda captured by reference in C++20
Does anyone know how to I'm converting an old project and I'm working on a project and hit a roadblock... I've spent hours debugging this and I've been working on this all day and After trying multiple solutions online, I still can't figure this out... I'm working on a personal project and I'm working with a memory leak scenario when using `std::shared_ptr` in a lambda function within my C++20 application. I have a scenario where I'm capturing a `std::shared_ptr` by reference in a lambda, and I'm seeing that the reference count does not decrement as expected when the lambda goes out of scope, leading to memory leaks. Here's a simplified version of my code: ```cpp #include <iostream> #include <memory> #include <vector> #include <algorithm> struct Data { int value; Data(int val) : value(val) {} }; int main() { auto ptr = std::make_shared<Data>(42); std::vector<std::function<void()>> tasks; tasks.emplace_back([&ptr]() { std::cout << "Value: " << ptr->value << '\n'; }); // Calling the lambda for (auto& task : tasks) { task(); } // Intentionally not resetting ptr to see if it leaks return 0; } ``` In this example, I expect the `std::shared_ptr` to automatically manage the memory, but it seems like the lambda is keeping a reference to `ptr` indefinitely. I checked my compiler settings and I'm using GCC 10.2.0 with `-std=c++20` flag, and I didn't enable any additional memory checks. I've tried switching the capture to by-value, but that defeats the purpose of sharing the ownership among multiple lambdas. What could be causing this behavior, and how can I resolve the memory leak without losing the reference sharing capability? I'd really appreciate any guidance on this. I'm coming from a different tech stack and learning C++. What's the correct way to implement this? For context: I'm using C++ on Windows 11. Has anyone else encountered this? For reference, this is a production microservice. I'd really appreciate any guidance on this.