Method CopyOnlyInt

tests/test_copy_move.cpp:94–94

class CopyOnlyInt {
public:
    CopyOnlyInt() { print_default_created(this); }
    explicit CopyOnlyInt(int v) : value{v} { print_created(this, value); }
    CopyOnlyInt(const CopyOnlyInt &c) {
        print_copy_created(this, c.value);