Nesting level too deep - recursive dependency?

["Francisco M. Marzoa Alonso" <fmmarzoa@xxxxxxx>]

This code:

<?php

class TestClass {
    public $myself;

    function __construct () {
        $this->myself = $this;
    }
}

$TestObj = new TestClass ();

if ( $TestObj->myself == $TestObj ) {
    echo "They are same.\n";
}

?>

Gives me a "Fatal error: Nesting level too deep - recursive dependency?"
on line #13: if ( $TestObj->myself == ...)

Could this be a PHP bug or I'm doing something wrong?

FYI:

PHP Version 5.0.2
PHP API 20031224
PHP Extension 20040412
Zend Extension 220040412
Server API Apache 2.0 Handler

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