old_constant      912 Zend/zend_inheritance.c 	zval *old_constant;
old_constant      914 Zend/zend_inheritance.c 	if ((old_constant = zend_hash_find(child_constants_table, name)) != NULL) {
old_constant      915 Zend/zend_inheritance.c 		if (!Z_ISREF_P(old_constant) ||
old_constant      917 Zend/zend_inheritance.c 		    Z_REFVAL_P(old_constant) != Z_REFVAL_P(parent_constant)) {