composition and bad_alloc

Hi all,

This seems straightforward but gives this runtime error: terminate
called after throwing an instance of 'std::bad_alloc' , what() :
std9bad_alloc . I have:

class X {
     int sz;
     T *ptr;

  public:
            X(int s, T *p) : sz(s), ptr(new T[s])
            {
              assert(ptr != NULL);
               for (int i = 0, i < sz; i++)
                  ptr[i] = p[i];
            }

            //other members

            ~X() {  delete ptr;  ptr = NULL;  }
 };

 class Y {
              X xobj

    public:
               Y(int s, T *p) : xobj(s, p) {  } //OK?
                //other members
                ~Y() { } //OK?
 };

then

int main(){

 ar[10] = {ten values};
 Y yobj(10, ar); //problem here(?)
.......
......
}

What's the problem above?
Thank you.

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