stack_overflow_test_program.c

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

void IShouldNeverBeCalled() {
    puts("I should never be called");
    exit(0);
}

void vulnerable(char *arg) {
    char buff[100];
    printf("%p\n",&buff[0]);
    strcpy(buff, arg);
}

int main(int argc, char *argv[]) {
    vulnerable(argv[1]);
    return 0;
}