Description:
------------
Call property_exists function in offsetExists method, ArrayObject raise Segmentation fault.

Test script:
---------------
<?php

// OK (Handled with memory-size over.)
// property_exists(
//     new class ([], \ArrayObject::ARRAY_AS_PROPS) extends \ArrayObject {
//         public function offsetExists($index)
//         {
//             return $this->offsetExists($index);
//         }
//     }, 
//     'foo'
// );

// NG (SEGV)
property_exists(
    new class ([], \ArrayObject::ARRAY_AS_PROPS) extends \ArrayObject {
        public function offsetExists($index)
        {
            return property_exists($this, $index);
        }
    }, 
    'foo'
);

Expected result:
----------------
Fatal error: Allowed memory size of %d bytes exhausted (tried to allocate %d bytes) in %s on line %d

Actual result:
--------------
Segmentation fault