Re: Dynamic memory issue: accessing more than allocated

Hi,

I wrote a simple code in which I allocated a variable memory of 10*int
and was trying to access memory more than I allocated. I was expecting
to get an error, but the code just ran. Could someone explain why this
would be happening? I am using g++ version 4.0.1 on Mac OS X.

Thanks,
Gautam.

// main.cpp
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <iomanip>
#include <memory>

using namespace std;

int main(){

       int *x = new int [10];

       for ( int i =0; i<10; i++)
               x[i] = i;

       for ( int i =0; i<20; i++)
               cout << x[i]<< endl;;

       return 0;
}

////////////////////////////

$ g++ main.cpp
$ ./a.out
0
1
2
3
4
5
6
7
8
9
0
0
0
0
0
0
0
0
0
0