Index: t3lib/class.t3lib_div.php
===================================================================
--- t3lib/class.t3lib_div.php	(revision 6721)
+++ t3lib/class.t3lib_div.php	(working copy)
@@ -5545,7 +5545,31 @@
 		$logMsg .= ' (' . substr($function->getFileName(), strlen(PATH_site)) . '#' . $function->getStartLine() . ')';
 		self::deprecationLog($logMsg);
 	}
+	
+	/**
+	 * Logs a require/include of a deprecated class file.
+	 * @return	void
+	 */
+	public static function logDeprecatedRequire() {
+		if (!$GLOBALS['TYPO3_CONF_VARS']['SYS']['enableDeprecationLog']) {
+			return;
+		}
+		
+		$trail = debug_backtrace();
+		if (in_array($trail[1]['function'], array('require', 'require_once', 'include', 'include_once'))) {
 
+				// trigger PHP error with a short message: <file> is deprecated (included in <source>)
+			$errorMsg = substr($trail[0]['file'], strlen(PATH_site))
+				. ' is deprecated (included in ' . substr($trail[1]['file'], strlen(PATH_site)) . '#' . $trail[1]['line'] . ')';
+			
+				// disabled until error handling is implemented
+
+				// write a message to the deprecation log: <file> - <message>
+			$logMsg = substr($trail[0]['file'], strlen(PATH_site)) . ' - ' . $errorMsg;
+			self::deprecationLog($logMsg);
+		}
+	}
+
 	/**
 	 * Converts a one dimensional array to a one line string which can be used for logging or debugging output
 	 * Example: "loginType: FE; refInfo: Array; HTTP_HOST: www.example.org; REMOTE_ADDR: 192.168.1.5; REMOTE_HOST:; security_level:; showHiddenRecords: 0;"