1/* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 17function foo1 (x : int = 1) : readonly int[] { 18 return [1, 2] 19} 20 21function foo2 (x : int = 1) : readonly [int, string] { 22 return [1, "a"] 23} 24 25let arr = foo1() 26/* @@ label */arr[0] = 1 27let tuple = foo2() 28/* @@ label1 */tuple[1] = "c" 29 30/* @@@ label Error TypeError: Cannot modify an array or tuple content that has the readonly parameter */ 31/* @@@ label1 Error TypeError: Cannot modify an array or tuple content that has the readonly parameter */ 32