1 /*
2  * Copyright (C) 2017 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 
18 // Define enough methods to enter the conflict trampoline.
19 interface Itf {
$noinline$def1()20   default int $noinline$def1() { return 42; }
$noinline$def2()21   default int $noinline$def2() { return 42; }
$noinline$def3()22   default int $noinline$def3() { return 42; }
$noinline$def4()23   default int $noinline$def4() { return 42; }
$noinline$def5()24   default int $noinline$def5() { return 42; }
$noinline$def6()25   default int $noinline$def6() { return 42; }
$noinline$def7()26   default int $noinline$def7() { return 42; }
$noinline$def8()27   default int $noinline$def8() { return 42; }
$noinline$def9()28   default int $noinline$def9() { return 42; }
$noinline$def10()29   default int $noinline$def10() { return 42; }
$noinline$def11()30   default int $noinline$def11() { return 42; }
$noinline$def12()31   default int $noinline$def12() { return 42; }
$noinline$def13()32   default int $noinline$def13() { return 42; }
$noinline$def14()33   default int $noinline$def14() { return 42; }
$noinline$def15()34   default int $noinline$def15() { return 42; }
$noinline$def16()35   default int $noinline$def16() { return 42; }
$noinline$def17()36   default int $noinline$def17() { return 42; }
$noinline$def18()37   default int $noinline$def18() { return 42; }
$noinline$def19()38   default int $noinline$def19() { return 42; }
$noinline$def20()39   default int $noinline$def20() { return 42; }
$noinline$def21()40   default int $noinline$def21() { return 42; }
$noinline$def22()41   default int $noinline$def22() { return 42; }
42 
43   // Known name conflict in OC-dev.
$noinline$defAa()44   default int $noinline$defAa() { return 42; }
$noinline$defbb()45   default int $noinline$defbb() { return 42; }
46 }
47 
48 // Define an abstract class so that the super calls in Main.instanceMethod
49 // end up finding the miranda method (which was then wrongly stashed into
50 // the dex cache).
51 class AbstractItf implements Itf {
52 }
53 
54 
55 public class Main extends AbstractItf {
56   static Itf itf = new Main();
main(String[] args)57   public static void main(String[] args) throws Exception {
58     new Main().instanceMethod();
59   }
60 
instanceMethod()61   public void instanceMethod() {
62     // Do super calls to invoke artQuickResolutionTrampoline, which used to
63     // put the copied method AbstractIf.<name> into the slot for the MethodId
64     // referencing the Itf method.
65     super.$noinline$def1();
66     super.$noinline$def2();
67     super.$noinline$def3();
68     super.$noinline$def4();
69     super.$noinline$def5();
70     super.$noinline$def6();
71     super.$noinline$def7();
72     super.$noinline$def8();
73     super.$noinline$def9();
74     super.$noinline$def10();
75     super.$noinline$def11();
76     super.$noinline$def12();
77     super.$noinline$def13();
78     super.$noinline$def14();
79     super.$noinline$def15();
80     super.$noinline$def16();
81     super.$noinline$def17();
82     super.$noinline$def18();
83     super.$noinline$def19();
84     super.$noinline$def20();
85     super.$noinline$def21();
86     super.$noinline$def22();
87     super.$noinline$defAa();
88     super.$noinline$defbb();
89 
90     // Now call the same methods but through an invoke-interface, which used to crash
91     // if the wrong method was in the dex cache.
92     itf.$noinline$def1();
93     itf.$noinline$def2();
94     itf.$noinline$def3();
95     itf.$noinline$def4();
96     itf.$noinline$def5();
97     itf.$noinline$def6();
98     itf.$noinline$def7();
99     itf.$noinline$def8();
100     itf.$noinline$def9();
101     itf.$noinline$def10();
102     itf.$noinline$def11();
103     itf.$noinline$def12();
104     itf.$noinline$def13();
105     itf.$noinline$def14();
106     itf.$noinline$def15();
107     itf.$noinline$def16();
108     itf.$noinline$def17();
109     itf.$noinline$def18();
110     itf.$noinline$def19();
111     itf.$noinline$def20();
112     itf.$noinline$def21();
113     itf.$noinline$def22();
114     itf.$noinline$defAa();
115     itf.$noinline$defbb();
116   }
117 }
118