parent_constant   910 Zend/zend_inheritance.c static zend_bool do_inherit_constant_check(HashTable *child_constants_table, zval *parent_constant, zend_string *name, const zend_class_entry *iface) /* {{{ */
parent_constant   916 Zend/zend_inheritance.c 		    !Z_ISREF_P(parent_constant) ||
parent_constant   917 Zend/zend_inheritance.c 		    Z_REFVAL_P(old_constant) != Z_REFVAL_P(parent_constant)) {