checker.c

BeginningLinuxProgramming example9

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char *ptr = (char *) malloc(1024);
    char ch;

    /* Uninitialized read */
    ch = ptr[0];

    /* Write beyond the block */
    ptr[1024] = 0;

    /* Orphan the block */
    ptr = 0;
    exit(0);
}