--TEST-- GH Bug #248: apcu_fetch may return values causing zend_mm_corruption or segfaults when custom serializer is used --SKIPIF-- --INI-- apc.enabled=1 apc.enable_cli=1 apc.serializer=default --FILE-- 2, 'construct' => ['a'], 'x1' => 'y', 'x2' => 'y', 'x3' => 'y', 'x4' => 'y', 'x5' => 'y', 'x6' => 0, ]; } class MyClass { private $_params; public function __construct($params) { var_dump($params); $this->_params = $params; var_dump($params); $this->_params['ids'] = [4]; $this->_params['loadValue'] = 'x'; unset($this->_params['params']); } } function setup() { apcu_delete('mytestkey'); apcu_store('mytestkey', build_array()); } function test_apcu_fetch() { // Or store second? $value = apcu_fetch('mytestkey'); echo "Fetching the value initially stored into apcu:\n"; var_dump($value); echo "Done dumping initial fetch\n\n"; new MyClass($value); echo "\$value was passed by value, not reference. After instantiating class, the array \$value gets modified\n"; var_dump($value); echo "\nAnd calling apcu_fetch again, the original data is preserved (8 keys, params=2)\n"; var_dump(apcu_fetch('mytestkey')); } setup(); test_apcu_fetch(); ?> --EXPECT-- Fetching the value initially stored into apcu: array(8) { ["params"]=> int(2) ["construct"]=> array(1) { [0]=> string(1) "a" } ["x1"]=> string(1) "y" ["x2"]=> string(1) "y" ["x3"]=> string(1) "y" ["x4"]=> string(1) "y" ["x5"]=> string(1) "y" ["x6"]=> int(0) } Done dumping initial fetch array(8) { ["params"]=> int(2) ["construct"]=> array(1) { [0]=> string(1) "a" } ["x1"]=> string(1) "y" ["x2"]=> string(1) "y" ["x3"]=> string(1) "y" ["x4"]=> string(1) "y" ["x5"]=> string(1) "y" ["x6"]=> int(0) } array(8) { ["params"]=> int(2) ["construct"]=> array(1) { [0]=> string(1) "a" } ["x1"]=> string(1) "y" ["x2"]=> string(1) "y" ["x3"]=> string(1) "y" ["x4"]=> string(1) "y" ["x5"]=> string(1) "y" ["x6"]=> int(0) } $value was passed by value, not reference. After instantiating class, the array $value gets modified array(8) { ["params"]=> int(2) ["construct"]=> array(1) { [0]=> string(1) "a" } ["x1"]=> string(1) "y" ["x2"]=> string(1) "y" ["x3"]=> string(1) "y" ["x4"]=> string(1) "y" ["x5"]=> string(1) "y" ["x6"]=> int(0) } And calling apcu_fetch again, the original data is preserved (8 keys, params=2) array(8) { ["params"]=> int(2) ["construct"]=> array(1) { [0]=> string(1) "a" } ["x1"]=> string(1) "y" ["x2"]=> string(1) "y" ["x3"]=> string(1) "y" ["x4"]=> string(1) "y" ["x5"]=> string(1) "y" ["x6"]=> int(0) }