1/*
2 * Copyright (c) 2023-2024 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
16class A<T>{}
17
18let g:((y:A<int>) => A<int>|null)|null = (y:A<String>): A<String>|null => {
19    return y;
20}
21
22/* @@? 18:42 Error TypeError: Type '(y: A<String>) => A<String>|null' cannot be assigned to type '(p1: A<Int>) => A<Int>|null|null'  */
23