C++ copy constructor by pointer

Hello i want to create a new class variable that is a pointer and initialize it by copy constructor. Though I know how copy constructor works by refernce, i cannot figure out how to do it. Can you help me? For example I have this definition:

class A{
public:
 int a;
private:
};

and in another code segment i do the following:

A *object= new A;
A->a=10;

A *newobject= new A(*object);

but i get a segmentation fault. Can you help me? I also tried:

 A *newobject= new A(&(*object));

but it doesn't work either.

Solution

With this kind of simple example, the following which uses the default bit wise copy constructor works fine.

The simple class looks like

class Bclass {
public:
    int iValue;
};

And the code to use the copy constructor looks like:

Bclass *pObject = new Bclass;
pObject->iValue = 10;

Bclass *pObject2 = new Bclass (*pObject);

Using Microsoft Visual Studio 2005, the above works fine.