in the example below

class X{
 int *r;
 public: 
X(){cout<< X is created ; r new int[10]; }
 ~X(){cout<< X is destroyed ; delete [] r; }
};
class Y
{
 public: 
Y(){ X x; throw 44; } 
~Y(){cout<< Y is destroyed ;}
};

I got this example of RAII from one site and ave some doubts. please help.

1. in the contructor of x we are not considering the scenation "if the memory allocation fails" .
2. Here for the destructor of Y is safe as in y construcotr is not allocating any memory. what if we need to do some memory allocation also in y constructor?