[SOLVED]Core dump with 2D array with RectangleShape type

[allmatters]

Hello friends, I'm pretty new to C++.
Sorry for the lack of context because I really don't know what causes it to segfault.
Basic data types work, but sf::RectangleShape doesn't? Why is that?

        std::array<std::vector<sf::RectangleShape>,3> bricks {{ {},{},{} }};
        for (int x {0};x<bricks.size();x++)
        {
                bricks[x].reserve(4);
                for (int y {0}; y<bricks[x].capacity();y++)
                {
                        bricks[x][y].setSize(sf::Vector2f(160.f,40.f));
                }
        }
 

[kojack]

Vector's reserve function allocates memory, but it doesn't actually make the elements of the vector, you still have to push_back new rectangles before you call setSize on them.
Instead of reserve try: bricks

• .resize(4);

Resize allocates the memory, but also fills it with the correct number of valid items that you can access right away.

[allmatters]

That did it. Thank you so much!