Deny std::vector from deleting its data

Question

I have the following case:

T* get_somthing(){
    std::vector vec; //T is trivally-copyable
    //fill vec
    T* temp = new T[vec.size()];
    memc         


        

Answer 1

If there is an option to use smart pointers I would recommend std::shared_ptr with alias:

template
std::shared_ptr get_somthing(){
    using Vector = std::vector;
    using ReturnT = std::shared_ptr;
    std::vector* vec = new std::vector;
    //fill vec
    std::shared_ptr vectorPtr(vec); // (1)
    std::shared_ptr aliasedPtr(vectorPtr, vec->data()); // (2)
    return aliasedPtr;
}

(1) will create a shared pointer to the vector to be aliased to (2) creates a shared pointer that will destroy the aliased shared_ptr instead of removing contained data