Description:
------------
In The PHP 7.1.5 (cli)( NTS DEBUG ).
My create a 'test' class with PHP extension, It's have a method __construct. Short code:

PHP_METHOD(test, __construct)
{
    zval *configs = NULL;
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "a", &configs) == FAILURE) {
        return;
    }
    php_printf("refcount = %d \n", Z_REFCOUNTED_P(configs));
}

The 'refcount' result of the first execution is 1, The 'refcount' result of the second execution is 0. Both CLI mode and FPM mode all exist. The PHP version 7.0.19 ( NTS ) this BUG does not exist.


Test script:
---------------
<?php
$configs = array(
    'dsn' => array('host' => '127.0.0.1', 'dbname' => 'test', 'port' => 3306),
);

$a = &$configs;
$b = $a;

$mysql = new test($a);

Expected result:
----------------
refcount = 0

Actual result:
--------------
refcount = 1