std::optional causing segmentation fault in custom copy constructor in C++20
I can't seem to get I'm confused about I'm working on a project and hit a roadblock. I'm working with a segmentation fault when trying to use `std::optional` within a class that has a custom copy constructor in C++20. My class looks like this: ```cpp #include <optional> #include <iostream> class MyClass { public: MyClass(int value) : optValue(value) {} MyClass(const MyClass& other) : optValue(other.optValue) { std::cout << "Copying MyClass\n"; } std::optional<int> getValue() const { return optValue; } private: std::optional<int> optValue; }; ``` When I try to create a copy of `MyClass`, I get a segmentation fault if `optValue` is not initialized. Here's how I'm creating an instance: ```cpp int main() { MyClass original(42); MyClass copy = original; std::cout << *copy.getValue() << '\n'; MyClass uninitialized; MyClass uninitializedCopy = uninitialized; // This line causes a segmentation fault } ``` The behavior occurs on the line where I create `uninitializedCopy`. I know that `std::optional` is designed to handle uninitialized states, so I expected it to manage this correctly. I tried to add a default constructor that initializes `optValue` to an empty state, but that didn’t help. Here’s the modified constructor: ```cpp MyClass() : optValue(std::nullopt) {} ``` However, the segmentation fault still occurs. The behavior message I receive is something like "Segmentation fault (core dumped)" without any further details. I suspect it might have to do with how `std::optional` interacts with my copy constructor, but I need to pinpoint the exact scenario. Any insights or suggestions on how to resolve this would be greatly appreciated! My development environment is Ubuntu. How would you solve this? This is part of a larger web app I'm building. Am I missing something obvious? Any examples would be super helpful. I'm on Windows 11 using the latest version of C++. Any feedback is welcome! I'd love to hear your thoughts on this.