1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 public final class Main {
18 
19   /// CHECK-START: void Main.main(String[]) builder (after)
20   /// CHECK: StaticFieldGet klass:Main[] exact: true
21   /// CHECK: ArrayGet klass:Main exact:true
22   /// CHECK: BoundType klass:Main exact:true
main(String[] args)23   public static void main(String[] args) {
24     Object o = null;
25     Main f = a[0];
26     for (int i = 0; i < 2; ++i) {
27       // We used to crash in the fixed point iteration of
28       // the reference type propagation while handling the instanceof:
29       // we were expecting `o` to get the same exact-ness as the
30       // `HBoundType` but the typing of the `ArrayGet` used to not
31       // propagate the exact-ness.
32       if (o instanceof Main) {
33         field = o;
34       }
35       o = f;
36     }
37     if (field != null) {
38       throw new Error("Expected null");
39     }
40   }
41 
42   static Main[] a = new Main[1];
43   static Object field;
44 }
45