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 16class cls {} 17 18let b : cls | null = null; 19let c : cls = new cls(); 20 21function foo(arg: cls | null) : void { 22} 23 24function main(): void { 25 foo(b); 26 foo(c); 27 28 let e : cls | null = null; 29 let f : cls = new cls(); 30 31 foo(e); 32 foo(f); 33 34 foo(null); 35 foo(new cls()); 36 37 assertEQ(b, null); 38 assertNE(c, null); 39 assertNE(null, c); 40 assertEQ(e, null); 41 assertNE(f, null); 42 assertEQ(b, e); 43 assertEQ(null, null); 44 45 return; 46} 47