1--TEST-- 2Bug #77345 (Segmentation faults stack overflow in cyclic garbage collector) (Bug #77427) 3--INI-- 4zend.enable_gc = 1 5--FILE-- 6<?php 7 8class Node 9{ 10 /** @var Node */ 11 public $previous; 12 /** @var Node */ 13 public $next; 14} 15 16var_dump(gc_enabled()); 17var_dump('start'); 18 19function xxx() { 20 $firstNode = new Node(); 21 $firstNode->previous = $firstNode; 22 $firstNode->next = $firstNode; 23 24 $circularDoublyLinkedList = $firstNode; 25 26 for ($i = 0; $i < 300000; $i++) { 27 $currentNode = $circularDoublyLinkedList; 28 $nextNode = $circularDoublyLinkedList->next; 29 30 $newNode = new Node(); 31 32 $newNode->previous = $currentNode; 33 $currentNode->next = $newNode; 34 $newNode->next = $nextNode; 35 $nextNode->previous = $newNode; 36 37 $circularDoublyLinkedList = $nextNode; 38 } 39} 40 41xxx(); 42gc_collect_cycles(); 43 44var_dump('end'); 45--EXPECT-- 46bool(true) 47string(5) "start" 48string(3) "end"
