Description:
------------
LOG:
---
php: /home/yongheng/php_clean/Zend/zend_operators.c:264: int _zendi_try_convert_scalar_to_number(zval *, zval *): Assertion `0' failed.
---

Test script:
---------------
<?
try {
    $a[  ob_start ( function () {
        list (  array_pop ( $GLOBALS )   => $b ) = 0 ;
    }, 20 )] = $c -=    [];
}
catch ( d ) {}