Problems with std::unique_ptr not releasing resources in C++17 with custom types
Can someone help me understand I'm experiencing an scenario where my `std::unique_ptr` does not seem to be releasing the resources properly for a custom type in C++17. I've implemented a simple resource class that manages a file handle, but when I use `std::unique_ptr` to manage an instance of this class, the destructor doesn't appear to be called, leading to resource leaks. Here’s a minimal example: ```cpp #include <iostream> #include <memory> class Resource { public: Resource() { std::cout << "Resource acquired" << std::endl; // Simulate opening a file or resource } ~Resource() { std::cout << "Resource released" << std::endl; // Simulate closing the file or resource } }; int main() { std::unique_ptr<Resource> resPtr(new Resource()); // resPtr goes out of scope without being reset or released return 0; } ``` When I run this code, I expect to see "Resource released" printed to the console when `resPtr` goes out of scope at the end of `main()`. However, I only see "Resource acquired" and no release message, indicating that the destructor isn't called as expected. I have verified that I am not using any copy operations or manual deletions that might interfere with the lifecycle of the `unique_ptr`. I've also tried using `resPtr.reset();` before the end of `main()`, and that causes the destructor to be called correctly. However, I would like to understand why the destructor is not invoked automatically when `resPtr` goes out of scope. Can someone explain what I might be missing or if there are any specific configurations or best practices I should be aware of when using `std::unique_ptr` with custom types in C++17? Any insights would be appreciated! I'm working in a Windows 11 environment. How would you solve this?