comparison vendor/symfony/var-dumper/Cloner/VarCloner.php @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

         $refsCounter = 0;               // Hard references counter
         $queue = [[$var]];    // This breadth-first queue is the return value
         $indexedArrays = [];       // Map of queue indexes that hold numerically indexed arrays
         $hardRefs = [];            // Map of original zval hashes to stub objects
         $objRefs = [];             // Map of original object handles to their stub object counterpart
+        $objects = [];             // Keep a ref to objects to ensure their handle cannot be reused while cloning
         $resRefs = [];             // Map of original resource handles to their stub object counterpart
         $values = [];              // Map of stub objects' hashes to original values
         $maxItems = $this->maxItems;
         $maxString = $this->maxString;
         $minDepth = $this->minDepth;

                                 $a = null;
                             }
                         }
                         if (empty($objRefs[$h])) {
                             $objRefs[$h] = $stub;
+                            $objects[] = $v;
                         } else {
                             $stub = $objRefs[$h];
                             ++$stub->refCount;
                             $a = null;
                         }