ext/ldap: `php_ldap_do_modify()` attempts to free pointer not allocated by ZMM.

[Girgias]

Description

The following code:

<?php

/* ldap_add(_ext)(), ldap_mod_replace(_ext)(), ldap_mod_add(_ext)(), and ldap_mod_del(_ext)() share an underlying C function */
/* We are assuming 3333 is not connectable */
$ldap = ldap_connect('ldap://127.0.0.1:3333');
$valid_dn = "cn=userA,something";

$dict_key_value_not_string = [
    'attribute1' => new stdClass(),
    'attribute2' => [
        'value1',
        'value2',
    ],
];
try {
    var_dump(ldap_add($ldap, $valid_dn, $dict_key_value_not_string));
} catch (Throwable $e) {
    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
}

Resulted in this output:

php: /home/girgias/Dev/PHP-8.2/Zend/zend_alloc.c:2809: tracked_get_size_zv: Assertion `size_zv && "Trying to free pointer not allocated through ZendMM"' failed.

Termsig=6

But I expected this output instead:

Exception to be caught

Moreover:

The following code:

<?php

/* ldap_add(_ext)(), ldap_mod_replace(_ext)(), ldap_mod_add(_ext)(), and ldap_mod_del(_ext)() share an underlying C function */
/* We are assuming 3333 is not connectable */
$ldap = ldap_connect('ldap://127.0.0.1:3333');
$valid_dn = "cn=userA,something";

$dict_key_multi_value_not_list_of_strings2 = [
    'attribute1' => 'value',
    'attribute2' => [
        'value1',
        new stdClass(),
    ],
];
try {
    var_dump(ldap_add($ldap, $valid_dn, $dict_key_multi_value_not_list_of_strings2));
} catch (Throwable $e) {
    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
}

Resulted in this output:

php: /home/girgias/Dev/PHP-8.2/Zend/zend_alloc.c:2809: tracked_get_size_zv: Assertion `size_zv && "Trying to free pointer not allocated through ZendMM"' failed.

Termsig=6

But I expected this output instead:

Exception to be caught

PHP Version

PHP 8.2

Operating System

No response