1 /*
2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test 8333748
26 * @summary javap should not fail if reserved access flag bits are set to 1
27 * @library /tools/lib
28 * @modules jdk.jdeps/com.sun.tools.javap
29 * @run junit UndefinedAccessFlagTest
30 */
31
32 import org.junit.jupiter.params.ParameterizedTest;
33 import org.junit.jupiter.params.provider.EnumSource;
34 import toolbox.JavapTask;
35 import toolbox.Task;
36 import toolbox.ToolBox;
37
38 import java.lang.classfile.AccessFlags;
39 import java.lang.classfile.ClassModel;
40 import java.lang.classfile.FieldModel;
41 import java.lang.classfile.MethodModel;
42 import java.lang.classfile.attribute.InnerClassInfo;
43 import java.lang.classfile.attribute.InnerClassesAttribute;
44 import java.nio.file.Files;
45 import java.nio.file.Path;
46
47 import static java.lang.classfile.ClassFile.*;
48 import static org.junit.jupiter.api.Assertions.assertTrue;
49
50 public class UndefinedAccessFlagTest {
51
52 final ToolBox toolBox = new ToolBox();
53
54 enum TestLocation {
55 NONE(false), CLASS, FIELD, METHOD, INNER_CLASS(false);
56
57 final boolean fails;
58 TestLocation() { this(true); }
59 TestLocation(boolean fails) { this.fails = fails; }
60 }
61
62 @ParameterizedTest
63 @EnumSource(TestLocation.class)
64 void test(TestLocation location) throws Throwable {
65 var cf = of();
66 ClassModel cm;
67 try (var is = UndefinedAccessFlagTest.class.getResourceAsStream(
68 "/UndefinedAccessFlagTest$SampleInnerClass.class"
69 )) {
70 cm = cf.parse(is.readAllBytes());
71 }
72 var bytes = cf.transformClass(cm, (cb, ce) -> {
73 switch (ce) {
74 case AccessFlags flags when location == TestLocation.CLASS -> cb
75 .withFlags(flags.flagsMask() | ACC_PRIVATE);
76 case FieldModel f when location == TestLocation.FIELD -> cb
77 .transformField(f, (fb, fe) -> {
78 if (fe instanceof AccessFlags flags) {
79 fb.withFlags(flags.flagsMask() | ACC_SYNCHRONIZED);
80 } else {
81 fb.with(fe);
82 }
83 });
84 case MethodModel m when location == TestLocation.METHOD -> cb
85 .transformMethod(m, (mb, me) -> {
86 if (me instanceof AccessFlags flags) {
87 mb.withFlags(flags.flagsMask() | ACC_INTERFACE);
88 } else {
89 mb.with(me);
90 }
91 });
92 case InnerClassesAttribute attr when location == TestLocation.INNER_CLASS -> cb
93 .with(InnerClassesAttribute.of(attr.classes().stream()
94 .map(ic -> InnerClassInfo.of(ic.innerClass(), ic.outerClass(), ic.innerName(), ic.flagsMask() | 0x0050))
95 .toList()));
96 default -> cb.with(ce);
97 }
98 });
99
100 Files.write(Path.of("transformed.class"), bytes);
101
102 var lines = new JavapTask(toolBox)
103 .classes("transformed.class")
104 .options("-c", "-p", "-v")
105 .run(location.fails ? Task.Expect.FAIL : Task.Expect.SUCCESS)
106 .writeAll()
107 .getOutputLines(Task.OutputKind.DIRECT);
108
109 // No termination when access flag error happens
110 assertTrue(lines.stream().anyMatch(l -> l.contains("java.lang.String field;")));
111 assertTrue(lines.stream().anyMatch(l -> l.contains("UndefinedAccessFlagTest$SampleInnerClass();")));
112 assertTrue(lines.stream().anyMatch(l -> l.contains("void method();")));
113 assertTrue(lines.stream().anyMatch(l -> l.contains("SampleInnerClass=class UndefinedAccessFlagTest$SampleInnerClass of class UndefinedAccessFlagTest")));
114
115 // Remove non-error lines
116 assertTrue(lines.removeIf(st -> !st.startsWith("Error:")));
117 // Desired locations has errors
118 assertTrue(location == TestLocation.NONE || !lines.isEmpty());
119 // Access Flag errors only
120 assertTrue(lines.stream().allMatch(l -> l.contains("Access Flags:")), () -> String.join("\n", lines));
121 }
122
123 static class SampleInnerClass {
124 String field;
125 void method() {}
126 }
127 }