Merge "MimeAnalyzer: Add testcases for mp3 detection"

[lhc/web/wiklou.git] / includes / libs / objectcache / MultiWriteBagOStuff.php

diff --git a/includes/libs/objectcache/MultiWriteBagOStuff.php b/includes/libs/objectcache/MultiWriteBagOStuff.php
index 687c67c..d94578d 100644 (file)
--- a/includes/libs/objectcache/MultiWriteBagOStuff.php
+++ b/includes/libs/objectcache/MultiWriteBagOStuff.php
@@ -181,6 +181,12 @@ class MultiWriteBagOStuff extends BagOStuff {
                $ret = true;
                $args = array_slice( func_get_args(), 3 );
 
+               if ( $count > 1 && $asyncWrites ) {
+                       // Deep-clone $args to prevent misbehavior when something writes an
+                       // object to the BagOStuff then modifies it afterwards, e.g. T168040.
+                       $args = unserialize( serialize( $args ) );
+               }
+
                foreach ( $this->caches as $i => $cache ) {
                        if ( $i >= $count ) {
                                break; // ignore the lower tiers