By RobLoach on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Issue links: 
https://www.drupal.org/node/1540136
Description: 

The definition of DRUPAL_ROOT has been moved into bootstrap.inc. This removes the need to define it whenever manually bootstrapping Drupal.

Drupal 7

The following is Drupal 7's index.php defining DRUPAL_ROOT and including bootstrap.inc to bootstrap Drupal:

/**
 * Root directory of Drupal installation.
 */
define('DRUPAL_ROOT', getcwd());

require_once DRUPAL_ROOT . '/includes/bootstrap.inc';

Drupal 8

In Drupal 8's index.php, the definition of DRUPAL_ROOT is not required as it's handled in bootstrap.inc:

require_once __DIR__ . '/core/includes/bootstrap.inc';
Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done