gistfile1.txt

❯ cat t.c
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main(void) {
  char *s = malloc(13);
  strcpy(s, "is it there?");
  s[12] = 0;
  printf("str: %s\n", s);
  free(s);
  printf("str: %s\n", s);
  return 0;
}

[~]
❯ clang t.c

[~]
❯ ./a.out
str: is it there?
str: is it there?