From 9d35884e8225d0585e1db9d3332478008dee742c Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aschulz@wikimedia.org>
Date: Fri, 13 Jul 2018 15:15:52 +0100
Subject: [PATCH] Use func_num_args() in MapCacheLRU::clear() for sanity

Change-Id: Ie11e18a342db0176271e4d08f56a99b0e3caacbe
---
 includes/libs/MapCacheLRU.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/libs/MapCacheLRU.php b/includes/libs/MapCacheLRU.php
index 595dc1a1be..e891c9ed13 100644
--- a/includes/libs/MapCacheLRU.php
+++ b/includes/libs/MapCacheLRU.php
@@ -251,7 +251,7 @@ class MapCacheLRU implements IExpiringStore, Serializable {
 	 * @return void
 	 */
 	public function clear( $keys = null ) {
-		if ( $keys === null ) {
+		if ( func_num_args() == 0 ) {
 			$this->cache = [];
 			$this->timestamps = [];
 		} else {
-- 
2.20.1