| --TEST-- | |
| Bug #39297 (Memory corruption because of indirect modification of overloaded array) | |
| --FILE-- | |
| function compareByRef(&$first, &$second) { | |
| return $first === $second; | |
| } | |
| class MyTree implements ArrayAccess { | |
| public $parent; | |
| public $children = array(); | |
| public function offsetExists($offset): bool { | |
| } | |
| public function offsetUnset($offset): void { | |
| } | |
| public function offsetSet($offset, $value): void { | |
| echo "offsetSet()\n"; | |
| $canonicalName = strtolower($offset); | |
| $this->children[$canonicalName] = $value; | |
| $value->parent = $this; | |
| } | |
| public function offsetGet($offset): mixed { | |
| echo "offsetGet()\n"; | |
| $canonicalName = strtolower($offset); | |
| return $this->children[$canonicalName]; | |
| } | |
| } | |
| $id = 'Test'; | |
| $root = new MyTree(); | |
| $child = new MyTree(); | |
| $root[$id] = $child; | |
| var_dump(compareByRef($root[$id], $child)); | |
| --EXPECT-- | |
| offsetSet() | |
| offsetGet() | |
| bool(true) | |