diff -up php-5.6.0RC1/ext/standard/var_unserializer.c.mock php-5.6.0RC1/ext/standard/var_unserializer.c
--- php-5.6.0RC1/ext/standard/var_unserializer.c.mock	2014-06-19 03:26:09.000000000 +0200
+++ php-5.6.0RC1/ext/standard/var_unserializer.c	2014-06-23 18:51:04.702265786 +0200
@@ -22,6 +22,7 @@
 #include "php.h"
 #include "ext/standard/php_var.h"
 #include "php_incomplete_class.h"
+#include "Zend/zend_interfaces.h"
 
 /* {{{ reference-handling for unserializer: var_* */
 #define VAR_ENTRIES_MAX 1024
@@ -394,7 +395,7 @@ static inline long object_common1(UNSERI
 
 	(*p) += 2;
 	
-	if (ce->serialize == NULL) {
+	if (ce->serialize == NULL || ce->unserialize == zend_user_unserialize || (ZEND_INTERNAL_CLASS != ce->type && ce->create_object == NULL)) {
 		object_init_ex(*rval, ce);
 	} else {
 		/* If this class implements Serializable, it should not land here but in object_custom(). The passed string