👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-13

c++ stdoptional linkedlist cpp

I'm a bit lost with I'm learning this framework and I need some guidance on I've searched everywhere and can't find a clear answer..... I'm working on a personal project and I'm working with a segmentation fault when trying to create a linked list using `std::optional` for a node's value in my custom data structure... The linked list node is defined as follows: ```cpp #include <iostream> #include <optional> template <typename T> struct Node { std::optional<T> value; Node* next; Node(T val) : value(val), next(nullptr) {} }; class LinkedList { private: Node<int>* head; public: LinkedList() : head(nullptr) {} void insert(int val) { Node<int>* newNode = new Node<int>(val); newNode->next = head; head = newNode; } }; ``` When I try to insert a node and then access its value, I experience a segmentation fault. Here’s how I’m testing it: ```cpp int main() { LinkedList list; list.insert(10); // Accessing head's value std::cout << *list.head->value << std::endl; // Causes segmentation fault } ``` I've ensured that I am checking if `head` is not null before dereferencing `value`. The scenario seems to be related to the management of the `std::optional` object and how it's being stored in the linked list. I've also tried using a raw pointer instead of `std::optional` and the code executes without any issues. Is there something specific that I am missing regarding the lifecycle of `std::optional` in this context? Any help would be greatly appreciated! This is part of a larger web app I'm building. For reference, this is a production service. Any pointers in the right direction? The stack includes Cpp and several other technologies. What would be the recommended way to handle this? This issue appeared after updating to Cpp 3.11.