Fixes #33785 for me

ext/pdo/pdo_stmt.c

@@ -227,6 +227,7 @@ static void get_lazy_object(pdo_stmt_t *stmt, zval *return_value TSRMLS_DC) /* {
 	Z_TYPE_P(return_value) = IS_OBJECT;
 	Z_OBJ_HANDLE_P(return_value) = Z_OBJ_HANDLE(stmt->lazy_object_ref);
 	Z_OBJ_HT_P(return_value) = Z_OBJ_HT(stmt->lazy_object_ref);
+	zend_objects_store_add_ref(return_value TSRMLS_CC);
 }
 /* }}} */
 

ext/pdo/tests/pdo_027.phpt

@@ -18,9 +18,11 @@ $db->exec("INSERT INTO test (id,name) VALUES(1,'test1')");
 $db->exec("INSERT INTO test (id,name) VALUES(2,'test2')");
 
 foreach ($db->query("SELECT * FROM test", PDO_FETCH_LAZY) as $v) {
-	echo $v->id.$v->name."\n";
+	echo "lazy: " . $v->id.$v->name."\n";
 }
+echo "End\n";
 ?>
 --EXPECT--
-1test1
-2test2
+lazy: 1test1
+lazy: 2test2
+End