1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8027281
* @summary As per JVMS 4.9.2, invokespecial can only refer to direct superinterfaces
* @modules jdk.jdeps/com.sun.tools.classfile
* @compile TestDirectSuperInterfaceInvoke.java
* @run main TestDirectSuperInterfaceInvoke
*/
import java.io.File;
import com.sun.tools.classfile.Attribute;
import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.Code_attribute;
import com.sun.tools.classfile.ConstantPool.CPRefInfo;
import com.sun.tools.classfile.Instruction;
import com.sun.tools.classfile.Method;
import com.sun.tools.classfile.Opcode;
interface BaseInterface {
public default int testedMethod(){ return 1; }
}
interface IntermediateInterface extends BaseInterface {
}
interface TestInterface extends IntermediateInterface {
public default void test() {
IntermediateInterface.super.testedMethod();
}
}
abstract class BaseClass implements BaseInterface { }
class TestClass extends BaseClass implements BaseInterface {
public int testedMethod() {return 9;}
public void test() {
if (super.testedMethod() != 1)
throw new IllegalStateException();
if (TestClass.super.testedMethod() != 1)
throw new IllegalStateException();
new Runnable() {
public void run() {
if (TestClass.super.testedMethod() != 1)
throw new IllegalStateException();
}
}.run();
}
}
public class TestDirectSuperInterfaceInvoke {
public static void main(String... args) throws Exception {
new TestDirectSuperInterfaceInvoke().run();
}
public void run() throws Exception {
new TestClass().test();
verifyDefaultBody("TestClass.class");
new TestInterface() {}.test();
verifyDefaultBody("TestInterface.class");
}
void verifyDefaultBody(String classFile) {
String workDir = System.getProperty("test.classes");
File file = new File(workDir, classFile);
try {
final ClassFile cf = ClassFile.read(file);
for (Method m : cf.methods) {
Code_attribute codeAttr = (Code_attribute)m.attributes.get(Attribute.Code);
for (Instruction instr : codeAttr.getInstructions()) {
if (instr.getOpcode() == Opcode.INVOKESPECIAL) {
int pc_index = instr.getShort(1);
CPRefInfo ref = (CPRefInfo)cf.constant_pool.get(pc_index);
String className = ref.getClassName();
if (className.equals("BaseInterface"))
throw new IllegalStateException("Must not directly refer to TestedInterface");
}
}
}
} catch (Exception e) {
e.printStackTrace();
throw new Error("error reading " + file +": " + e);
}
}
}
|
