Unexplained Memory Leak in C++ when Using std::vector with Reserve and Emplace
I've looked through the documentation and I'm still confused about I'm confused about I'm working on a personal project and I'm working with a puzzling memory leak scenario in my C++ application that utilizes `std::vector`..... I'm using C++17 and have a scenario where I reserve space in a vector and subsequently employ `emplace_back` to add elements. Despite reserving enough space, I'm observing that the memory usage keeps increasing without being released, leading to a potential memory leak. Here's a simplified version of my code: ```cpp #include <iostream> #include <vector> class Item { public: Item(int id): id(id) { } // Some operations... private: int id; }; int main() { std::vector<Item> items; items.reserve(1000); // Reserve space for 1000 items for (int i = 0; i < 1000; ++i) { items.emplace_back(i); // Constructing in place } std::cout << "Items size: " << items.size() << std::endl; return 0; } ``` I thought by reserving space, the vector would not need to reallocate memory as I add items, so I expected a stable memory footprint. However, when I run this code and inspect the memory usage (using tools like Valgrind and Visual Studio's built-in diagnostics), I see that memory usage increases beyond what I anticipated. No exceptions or errors are thrown, but this behavior is concerning. I've tried using `push_back` instead of `emplace_back`, but it results in similar memory behavior. Additionally, I checked for any potential out-of-scope items or other resource leaks in the surrounding code where this vector is being utilized. I'm wondering if this is a known scenario with `std::vector` or if I've overlooked something fundamental in my approach. Any insights or suggestions on how to diagnose this further would be greatly appreciated. For context: I'm using Cpp on Windows. Any help would be greatly appreciated! I'm working with Cpp in a Docker container on CentOS. Is there a better approach? I'm working on a REST API that needs to handle this. Thanks in advance! I recently upgraded to Cpp 3.11. Is there a simpler solution I'm overlooking?