WordPress/wp-includes/post.php

<?php
/**
 * Post functions and post utility function.
 *
 * @package WordPress
 * @subpackage Post
 * @since 1.5.0
 */

require_once( ABSPATH . WPINC . '/post-functions.php' );
require_once( ABSPATH . WPINC . '/class-wp-post.php' );