Thread: restrict

to my understanding of restrict keyword the following code should print something different for the 2 cases, but it prints the same.
Am I doing something wrong?

Code:

void f1(int *x, int *y, size_t n)
{
    for (int i = 0; i < n; i++)
    {
        x[i] *= *y;
        printf("%d ", x[i]);
    }
    puts("");
}

void f2(int *restrict x, int *restrict y, size_t n)
{
    for (int i = 0; i < n; i++)
    {
        x[i] *= *y;
        printf("%d ", x[i]);
    }
    puts("");
}


int main( int argc, char *argv[] )
{
    int arr [10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    int arr2[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

    srand(12);

    int index = (rand() % ARRSIZE(arr));
    int *p1 = arr + index;
    int *p2 = arr2 + index;

    printf("index=%d\n\n", index);

    f1(arr, p1, ARRSIZE(arr));
    f2(arr2, p2, ARRSIZE(arr2));
    
    return ( 0 ) ;
}