Memory leak when using custom deleter with std::shared_ptr in C++14
I've been banging my head against this for hours. I am encountering a memory leak in my C++14 application when using `std::shared_ptr` with a custom deleter. I created a simple class that manages a resource, and I want to ensure the resource is properly released when the `std::shared_ptr` goes out of scope. However, I noticed that the memory allocated for the resource isn't being freed, leading to a leak. Here’s a simplified version of my code: ```cpp #include <iostream> #include <memory> class Resource { public: Resource() { std::cout << "Resource acquired" << std::endl; } ~Resource() { std::cout << "Resource released" << std::endl; } }; void customDeleter(Resource* res) { std::cout << "Custom deleter called" << std::endl; delete res; } int main() { { std::shared_ptr<Resource> resPtr(new Resource(), customDeleter); // Do something with resPtr } // resPtr goes out of scope return 0; } ``` When I run this code, I see the output for "Resource acquired" but I do not see "Resource released" or "Custom deleter called" when the `std::shared_ptr` goes out of scope. I have checked that I am not creating any additional shared pointers to the same resource elsewhere, and I am not holding on to any references that could prevent the deleter from being called. I thought that using a custom deleter would ensure proper clean-up, but it seems like the deleter is not being triggered. I have also tried switching to a lambda function as the deleter, but the result is the same. What could be causing this issue? Am I missing something in the way I'm using `std::shared_ptr`? Any help would be greatly appreciated! For context: I'm using C++ on Windows. Is there a better approach? I'm coming from a different tech stack and learning C++. What are your experiences with this?