ZF-10189: Missing require_once for Zend_Log in Zend_Cache_Core
In _loggerSanity(), if Zend_Cache_Core is initialised before autoloading has been turned on, a missing require_once statement for Zend_Log causes:
Fatal error: Class 'Zend_Log' not found in /path/to/library/Zend/Cache/Core.php on line 717
(as at revision 21293).
Can be easily worked around by autoloading earlier, requiring Zend_Log yourself or turning off logging, but probably should be fixed nonetheless.