use-hooks-not-globals.diff

Index: object-cache.php
===================================================================
--- object-cache.php	(revision 1548389)
+++ object-cache.php	(working copy)
@@ -374,9 +374,9 @@
 else : // No APC
 	function apc_not_actually_running() {
 		$GLOBALS['_wp_using_ext_object_cache'] = false;
-		unset( $GLOBALS['wp_filter']['all'][-100]['apc_not_actually_running'] );
+		remove_action( 'all', 'apc_not_actually_running', -100, 0 );
 	}
 	$GLOBALS['_wp_using_ext_object_cache'] = false; // This will get overridden as of WP 3.5, so we have to hook in to 'all':
-	$GLOBALS['wp_filter']['all'][-100]['apc_not_actually_running'] = array( 'function' => 'apc_not_actually_running', 'accepted_args' => 0 );
+	add_action( 'all', 'apc_not_actually_running', -100, 0 );
 	require_once ( ABSPATH . WPINC . '/cache.php' );
-endif;
\ No newline at end of file
+endif;