Fill the heap of arduino

fill.ino

class Counter {

public:

  int count;
  Counter(int value){
    count = value;
  }

  ~Counter(){
    // destructor  
  }
  
  void inc(){
    count++;  
  }
  
  int getValue(){
    return count;
  }

};

void setup() {
  Serial.begin(9600);
}

Counter *x;
void loop() {
  int y;
  x = new Counter(50);
  if (x == 0) {
    // No more space on the heap
    Serial.println(*(int *)0); // -> 50
    x->count += 2;
    Serial.println(*(int *)0); // -> 102 , probably the precedent operation overwrite the value of the register R0/R1
    delay(5000);
  } else {
    Serial.print((unsigned long)x, HEX);
    Serial.print(String(" "));
    Serial.print((unsigned long)&y, HEX);
    Serial.print(String(" "));
    Serial.println(*(int *)0);
    delay(40);
  }
}