Description:
------------
Compiling PHP in debug mode and running the code from http://3v4l.org/pb3a2 shows a memory leak at the end. It doesn't happen on stable versions of PHP 5.6.

This get worst when the returned value is a string, as you can see on http://3v4l.org/S3fTZ. If you check the results you will see &string(1747940472) instead of string(11) like the other versions.
Depending the functions you use after this you get the warning about the string not-zero terminated.

Expected result:
----------------
object(Entity)#1 (1) {
  ["_properties":protected]=>
  array(1) {
    ["foo"]=>
    string(6) " world"
  }
}

Actual result:
--------------
object(Entity)#1 (1) {
  ["_properties":protected]=>
  array(1) {
    ["foo"]=>
    string(6) " world"
  }
}
[Sun Mar  8 03:59:48 2015]  Script:  '/home/vagrant/shared/test2.php'
/home/vagrant/shared/php-src/Zend/zend_vm_execute.h(24234) :  Freeing 0x7FFAD80751C0 (24 bytes), script=/home/vagrant/shared/test2.php