--- a/wp/wp-includes/default-constants.php	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-includes/default-constants.php	Mon Oct 14 17:39:30 2019 +0200
@@ -11,47 +11,57 @@
  * @see wp_debug_mode()
  *
  * @since 3.0.0
+ *
+ * @global int    $blog_id    The current site ID.
+ * @global string $wp_version The WordPress version string.
  */
 function wp_initial_constants() {
 	global $blog_id;
 
-	// set memory limits
-	if ( !defined('WP_MEMORY_LIMIT') ) {
-		if( is_multisite() ) {
-			define('WP_MEMORY_LIMIT', '64M');
+	/**#@+
+	 * Constants for expressing human-readable data sizes in their respective number of bytes.
+	 *
+	 * @since 4.4.0
+	 */
+	define( 'KB_IN_BYTES', 1024 );
+	define( 'MB_IN_BYTES', 1024 * KB_IN_BYTES );
+	define( 'GB_IN_BYTES', 1024 * MB_IN_BYTES );
+	define( 'TB_IN_BYTES', 1024 * GB_IN_BYTES );
+	/**#@-*/
+
+	$current_limit     = @ini_get( 'memory_limit' );
+	$current_limit_int = wp_convert_hr_to_bytes( $current_limit );
+
+	// Define memory limits.
+	if ( ! defined( 'WP_MEMORY_LIMIT' ) ) {
+		if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) {
+			define( 'WP_MEMORY_LIMIT', $current_limit );
+		} elseif ( is_multisite() ) {
+			define( 'WP_MEMORY_LIMIT', '64M' );
 		} else {
-			define('WP_MEMORY_LIMIT', '40M');
+			define( 'WP_MEMORY_LIMIT', '40M' );
 		}
 	}
 
 	if ( ! defined( 'WP_MAX_MEMORY_LIMIT' ) ) {
-		define( 'WP_MAX_MEMORY_LIMIT', '256M' );
+		if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) {
+			define( 'WP_MAX_MEMORY_LIMIT', $current_limit );
+		} elseif ( -1 === $current_limit_int || $current_limit_int > 268435456 /* = 256M */ ) {
+			define( 'WP_MAX_MEMORY_LIMIT', $current_limit );
+		} else {
+			define( 'WP_MAX_MEMORY_LIMIT', '256M' );
+		}
 	}
 
-	/**
-	 * The $blog_id global, which you can change in the config allows you to create a simple
-	 * multiple blog installation using just one WordPress and changing $blog_id around.
-	 *
-	 * @global int $blog_id
-	 * @since 2.0.0
-	 */
+	// Set memory limits.
+	$wp_limit_int = wp_convert_hr_to_bytes( WP_MEMORY_LIMIT );
+	if ( -1 !== $current_limit_int && ( -1 === $wp_limit_int || $wp_limit_int > $current_limit_int ) ) {
+		@ini_set( 'memory_limit', WP_MEMORY_LIMIT );
+	}
+
 	if ( ! isset($blog_id) )
 		$blog_id = 1;
 
-	// set memory limits.
-	if ( function_exists( 'memory_get_usage' ) ) {
-		$current_limit = @ini_get( 'memory_limit' );
-		$current_limit_int = intval( $current_limit );
-		if ( false !== strpos( $current_limit, 'G' ) )
-			$current_limit_int *= 1024;
-		$wp_limit_int = intval( WP_MEMORY_LIMIT );
-		if ( false !== strpos( WP_MEMORY_LIMIT, 'G' ) )
-			$wp_limit_int *= 1024;
-
-		if ( -1 != $current_limit && ( -1 == WP_MEMORY_LIMIT || $current_limit_int < $wp_limit_int ) )
-			@ini_set( 'memory_limit', WP_MEMORY_LIMIT );
-	}
-
 	if ( !defined('WP_CONTENT_DIR') )
 		define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' ); // no trailing slash, full paths only - WP_CONTENT_URL is defined further down
 
@@ -71,6 +81,18 @@
 	if ( !defined('WP_CACHE') )
 		define('WP_CACHE', false);
 
+	// Add define('SCRIPT_DEBUG', true); to wp-config.php to enable loading of non-minified,
+	// non-concatenated scripts and stylesheets.
+	if ( ! defined( 'SCRIPT_DEBUG' ) ) {
+		if ( ! empty( $GLOBALS['wp_version'] ) ) {
+			$develop_src = false !== strpos( $GLOBALS['wp_version'], '-src' );
+		} else {
+			$develop_src = false;
+		}
+
+		define( 'SCRIPT_DEBUG', $develop_src );
+	}
+
 	/**
 	 * Private
 	 */
@@ -80,13 +102,29 @@
 	if ( !defined('SHORTINIT') )
 		define('SHORTINIT', false);
 
-	// Constants for expressing human-readable intervals
-	// in their respective number of seconds.
+	// Constants for features added to WP that should short-circuit their plugin implementations
+	define( 'WP_FEATURE_BETTER_PASSWORDS', true );
+
+	/**#@+
+	 * Constants for expressing human-readable intervals
+	 * in their respective number of seconds.
+	 *
+	 * Please note that these values are approximate and are provided for convenience.
+	 * For example, MONTH_IN_SECONDS wrongly assumes every month has 30 days and
+	 * YEAR_IN_SECONDS does not take leap years into account.
+	 *
+	 * If you need more accuracy please consider using the DateTime class (https://secure.php.net/manual/en/class.datetime.php).
+	 *
+	 * @since 3.5.0
+	 * @since 4.4.0 Introduced `MONTH_IN_SECONDS`.
+	 */
 	define( 'MINUTE_IN_SECONDS', 60 );
 	define( 'HOUR_IN_SECONDS',   60 * MINUTE_IN_SECONDS );
 	define( 'DAY_IN_SECONDS',    24 * HOUR_IN_SECONDS   );
 	define( 'WEEK_IN_SECONDS',    7 * DAY_IN_SECONDS    );
+	define( 'MONTH_IN_SECONDS',  30 * DAY_IN_SECONDS    );
 	define( 'YEAR_IN_SECONDS',  365 * DAY_IN_SECONDS    );
+	/**#@-*/
 }
 
 /**
@@ -312,12 +350,14 @@
 	define('STYLESHEETPATH', get_stylesheet_directory());
 
 	/**
-	 * Slug of the default theme for this install.
+	 * Slug of the default theme for this installation.
 	 * Used as the default theme when installing new sites.
-	 * Will be used as the fallback if the current theme doesn't exist.
+	 * It will be used as the fallback if the current theme doesn't exist.
+	 *
 	 * @since 3.0.0
+	 * @see WP_Theme::get_core_default_theme()
 	 */
 	if ( !defined('WP_DEFAULT_THEME') )
-		define( 'WP_DEFAULT_THEME', 'twentyfifteen' );
+		define( 'WP_DEFAULT_THEME', 'twentyseventeen' );
 
 }