int make_post(const User *author, User *target, char *contents) {
    if (author == NULL || target == NULL){
        return 2;
    }

    if (friends_check(author, target) != 0){
        return 1;
    }

    Post* new_post = malloc(sizeof(Post));
    strcpy(new_post->author, author->name);
    new_post->contents = contents;
    time_t *now = malloc(sizeof(time_t));
    *now = time(NULL);
    new_post->date = now;
    new_post->next = target->first_post;
    target->first_post = new_post;
    return 0;
}
/*
 * Make a new post from 'author' to the 'target' user,
 * containing the given contents, IF the users are friends.
 *
 * Insert the new post at the *front* of the user's list of posts.
 *
 * 'contents' is a pointer to heap-allocated memory - you do not need
 * to allocate more memory to store the contents of the post.
 *
 * Return:
 *   - 0 on success
 *   - 1 if users exist but are not friends
 *   - 2 if either User pointer is NULL
 */
However, 5488 segmentation fault  ./friendme