Program received signal SIGSEGV, Segmentation fault.
0x0000400b5c in addComponent (oneList=..., oneComponent=@0x7ffffe08: 0x6120) at main.cpp:51
51      oneList.components[oneList.nElements++] = *oneComponent;
(gdb) backtrace
#0  0x00000400b5c in addComponent (oneList=..., oneComponent=@0x7ffffe08: 0x6120) at main.cpp:51
#1  0x00000000bf6 in main () at main.cpp:69
(gdb)

struct Component
{
    int piece1;
    int piece2;
    int piece3;
    int piece4;
};
struct ListComponentDynamic
{
    Component* components;
    int capacity;
    int nElements;
};

void addComponent(ListComponentDynamic& oneList, Component*& oneComponent)
{
    if (oneList.capacity == oneList.nElements)
        doubleCapacity(oneList);

    oneList.components[oneList.nElements++] = *oneComponent;
}

void freeAllocatedList(ListComponentDynamic& oneList)
{
    delete[] oneList.components;
    oneList = {};
}

int main()
{
    // add an element
    ListComponentDynamic oneList;
    oneList.components = {0};

    // adding the value 2 to piece1;
    Component* component1 = new Component{2, 0, 0 ,0};

    addComponent(oneList, component1);
    std::cout << component1->piece1;
}