I’m new to C++ coming from C# so I’m not too confident on memory stuff, I think I’m getting some undefined behaviour issues when trying to use my class (feel free to correct me if I’m wrong) and I don’t know why. If I put std::cout statements at the end of the Initialise() function it changes the values. My suspicion is the Piece class deleting things in the Initialise() function, but I have no idea how to stop that.
(Cube class is just two std::arrays in a struct) I had a look at the other question asked about undefined behaviour but couldn’t infer what my issue was. Let me know if more information is needed.
Thanks for reading.

// includes
// below are parts of the Manip class

std::array<Piece, 8> * _corners; [text]
std::array<Piece, 12> * _edges;

Manip::Manip(Cube* state)
    : _corners(state -  > corners), _edges(state -  > edges) {}

// functions
// as I don't know what functions are causing the issue, I'll include a snip from all relevant ones

std::string Manip::EnumSwitcher(Colour cn) {
    switch (cn) {
    case Colour::w: return "W";
        // more cases
    default: return "";
    }

bool Manip::ContainsCorner(Location l, char c) {
    switch (l) {
    case Location::URF:
    // more cases
    return EnumSwitcher(l).find(c) != std::string::npos;
    default: return false;
    }


void Manip::Initialise() {
    // basically just a lot of
    _edges[i] = Piece(...)
    _corners[i] = Piece(...)
    }