[TYPO3-mvc] print_r, t3lib_utility_Debug::debug on an object produces memory leak in Extbase 1.3.0

[Simon Schaufelberger]

Hello,
with the old version of extbase it was possible to debug an object with 
print_r without any memory problems.
Since the new Extbase Version 1.3 my server needs more than 256 MB Ram 
and I don't know why and what Extbase is doing with my object.

Any profiler gurus here who can find out what is the problem?

Just try it with the blog_example and print_r($blog); in edit Action of 
BlogController.

/**
  * Edits an existing blog
  *
  * @param Tx_BlogExample_Domain_Model_Blog $blog
  * @return string Form for editing the existing blog
  * @dontvalidate $blog
  */
public function editAction(Tx_BlogExample_Domain_Model_Blog $blog) {
	print_r($blog);
	exit;
}
-- 
Kind regards,

Schaufi from punkt.de