Not getting double free or corruption error on running program

Question

I have written the following program which should give runtime error of double free corruption.

#include <iostream>
#include <memory>
using namespace std;

int main()
{
    shared_ptr<int> shared3(new int);
    *shared3 = 9;
    int *raw = shared3.get();
    delete raw;

    return 0;
}

A core dump should have come but it didn't. Please tell me how can I get double free runtime error in my environment?