Pdo\Firebird - persistent connection - setAttribute(Pdo\Firebird::ATTR_DATE_FORMAT, ..) results in "zend_mm_heap corrupted"

[iratonert]

Description

The following code:

$dbh = new PDO('firebird:dbname='.$database, $user, $password, array(PDO::ATTR_PERSISTENT => true));
$dbh->setAttribute(Pdo\Firebird::ATTR_DATE_FORMAT, '%m-%d-%Y');

Resulted in this output:
zend_mm_heap corrupted

I don't actually expect any output. The message "zend_mm_heap corrupted" seems to indicate that something went wrong.

If I don't establish a persistent connection, I don't get the "zend_mm_heap corrupted" message.

If I omit setting the Pdo\Firebird::ATTR_DATE_FORMAT attribute, I don't get the "zend_mm_heap corrupted" message.

It doesn't matter which of the Pdo\Firebird::ATTR_DATE_FORMAT, Pdo\Firebird::ATTR_TIME_FORMAT, or Pdo\Firebird::ATTR_TIMESTAMP_FORMAT attributes I set, or whether I set one of them, all three, or two of them. As soon as I use a persistent connection and set one of these attributes, I get the "zend_mm_heap corrupted" message at the end of the script.

PHP Version

PHP 8.4.1 (cli) (built: Nov 20 2024 11:13:22) (NTS Visual C++ 2022 x64)
Copyright (c) The PHP Group
Zend Engine v4.4.1, Copyright (c) Zend Technologies
with Xdebug v3.4.0, Copyright (c) 2002-2024, by Derick Rethans

Operating System

Windows 11

[iratonert]

The same with this PHP Version

PHP 8.4.5 (cli) (built: Mar 12 2025 12:17:53) (NTS Visual C++ 2022 x64)
Copyright (c) The PHP Group
Zend Engine v4.4.5, Copyright (c) Zend Technologies
with Xdebug v3.4.0, Copyright (c) 2002-2024, by Derick Rethans

[iluuu1994]

Maybe @SakiTakamachi can have a look?

[SakiTakamachi]

I found the cause and will fix it :)