1 /*
2 * Copyright (c) 2011, 2015, 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
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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.
18 *
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
26 * @bug 7003595
27 * @summary IncompatibleClassChangeError with unreferenced local class with subclass
28 * @modules jdk.jdeps/com.sun.tools.classfile
29 * jdk.compiler/com.sun.tools.javac.api
30 * jdk.compiler/com.sun.tools.javac.file
31 */
32
33 import com.sun.source.util.JavacTask;
34 import com.sun.tools.classfile.Attribute;
35 import com.sun.tools.classfile.ClassFile;
36 import com.sun.tools.classfile.InnerClasses_attribute;
37 import com.sun.tools.classfile.ConstantPool.*;
38 import com.sun.tools.javac.api.JavacTool;
39
40 import java.io.File;
41 import java.net.URI;
42 import java.util.Arrays;
43 import java.util.ArrayList;
44 import javax.tools.JavaCompiler;
45 import javax.tools.JavaFileObject;
46 import javax.tools.SimpleJavaFileObject;
47 import javax.tools.StandardJavaFileManager;
48 import javax.tools.ToolProvider;
49
50
51 public class T7003595 {
52
53 /** global decls ***/
54
55 //statistics
56 static int checkCount = 0;
57
58 enum ClassKind {
59 NESTED("static class #N { #B }", "$", true),
60 INNER("class #N { #B }", "$", false),
61 LOCAL_REF("void test() { class #N { #B }; new #N(); }", "$1", false),
62 LOCAL_NOREF("void test() { class #N { #B }; }", "$1", false),
63 ANON("void test() { new Object() { #B }; }", "$1", false),
64 NONE("", "", false);
65
66 String memberInnerStr;
67 String sep;
68 boolean staticAllowed;
69
70 private ClassKind(String memberInnerStr, String sep, boolean staticAllowed) {
71 this.memberInnerStr = memberInnerStr;
72 this.sep = sep;
73 this.staticAllowed = staticAllowed;
74 }
75
76 String getSource(String className, String outerName, String nested) {
77 return memberInnerStr.replaceAll("#O", outerName).
78 replaceAll("#N", className).replaceAll("#B", nested);
79 }
80
81 static String getClassfileName(String[] names, ClassKind[] outerKinds, int pos) {
82 System.out.println(" pos = " + pos + " kind = " + outerKinds[pos] + " sep = " + outerKinds[pos].sep);
83 String name = outerKinds[pos] != ANON ?
84 names[pos] : "";
85 if (pos == 0) {
86 return "Test" + outerKinds[pos].sep + name;
87 } else {
88 String outerStr = getClassfileName(names, outerKinds, pos - 1);
89 return outerStr + outerKinds[pos].sep + name;
90 }
91 }
92
93 boolean isAllowed(ClassKind nestedKind) {
94 return nestedKind != NESTED ||
95 staticAllowed;
96 }
97 }
98
99 enum LocalInnerClass {
100 LOCAL_REF("class L {}; new L();", "Test$1L"),
101 LOCAL_NOREF("class L {};", "Test$1L"),
102 ANON("new Object() {};", "Test$1"),
103 NONE("", "");
104
105 String localInnerStr;
106 String canonicalInnerStr;
107
108 private LocalInnerClass(String localInnerStr, String canonicalInnerStr) {
109 this.localInnerStr = localInnerStr;
110 this.canonicalInnerStr = canonicalInnerStr;
111 }
112 }
113
114 public static void main(String... args) throws Exception {
115 // Create a single file manager and reuse it for each compile to save time.
116 try (StandardJavaFileManager fm = JavacTool.create().getStandardFileManager(null, null, null)) {
117 for (ClassKind ck1 : ClassKind.values()) {
118 String cname1 = "C1";
119 for (ClassKind ck2 : ClassKind.values()) {
120 if (!ck1.isAllowed(ck2)) continue;
121 String cname2 = "C2";
122 for (ClassKind ck3 : ClassKind.values()) {
123 if (!ck2.isAllowed(ck3)) continue;
124 String cname3 = "C3";
125 new T7003595(fm, new ClassKind[] {ck1, ck2, ck3}, new String[] { cname1, cname2, cname3 }).compileAndCheck();
126 }
127 }
128 }
129 }
130
131 System.out.println("Total checks made: " + checkCount);
132 }
133
134 /** instance decls **/
135
136 ClassKind[] cks;
137 String[] cnames;
138 StandardJavaFileManager fm;
139
140 T7003595(StandardJavaFileManager fm, ClassKind[] cks, String[] cnames) {
141 this.fm = fm;
142 this.cks = cks;
143 this.cnames = cnames;
144 }
145
146 void compileAndCheck() throws Exception {
147 final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
148 JavaSource source = new JavaSource();
149 JavacTask ct = (JavacTask)tool.getTask(null, fm, null,
150 null, null, Arrays.asList(source));
151 ct.call();
152 verifyBytecode(source);
153 }
154
155 void verifyBytecode(JavaSource source) {
156 for (int i = 0; i < 3 ; i ++) {
157 if (cks[i] == ClassKind.NONE) break;
158 checkCount++;
159 String filename = cks[i].getClassfileName(cnames, cks, i);
160 File compiledTest = new File(filename + ".class");
161 try {
162 ClassFile cf = ClassFile.read(compiledTest);
163 if (cf == null) {
164 throw new Error("Classfile not found: " + filename);
165 }
166
167 InnerClasses_attribute innerClasses = (InnerClasses_attribute)cf.getAttribute(Attribute.InnerClasses);
168
169 ArrayList<String> foundInnerSig = new ArrayList<>();
170 if (innerClasses != null) {
171 for (InnerClasses_attribute.Info info : innerClasses.classes) {
172 String foundSig = info.getInnerClassInfo(cf.constant_pool).getName();
173 foundInnerSig.add(foundSig);
174 }
175 }
176
177 ArrayList<String> expectedInnerSig = new ArrayList<>();
178 //add inner class (if any)
179 if (i < 2 && cks[i + 1] != ClassKind.NONE) {
180 expectedInnerSig.add(cks[i + 1].getClassfileName(cnames, cks, i + 1));
181 }
182 //add inner classes
183 for (int j = 0 ; j != i + 1 && j < 3; j++) {
184 expectedInnerSig.add(cks[j].getClassfileName(cnames, cks, j));
185 }
186
187 if (expectedInnerSig.size() != foundInnerSig.size()) {
188 throw new Error("InnerClasses attribute for " + cnames[i] + " has wrong size\n" +
189 "expected " + expectedInnerSig.size() + "\n" +
190 "found " + innerClasses.number_of_classes + "\n" +
191 source);
192 }
193
194 for (String foundSig : foundInnerSig) {
195 if (!expectedInnerSig.contains(foundSig)) {
196 throw new Error("InnerClasses attribute for " + cnames[i] + " has unexpected signature: " +
197 foundSig + "\n" + source + "\n" + expectedInnerSig);
198 }
199 }
200
201 for (String expectedSig : expectedInnerSig) {
202 if (!foundInnerSig.contains(expectedSig)) {
203 throw new Error("InnerClasses attribute for " + cnames[i] + " does not contain expected signature: " +
204 expectedSig + "\n" + source);
205 }
206 }
207 } catch (Exception e) {
208 e.printStackTrace();
209 throw new Error("error reading " + compiledTest +": " + e);
210 }
211 }
212 }
213
214 class JavaSource extends SimpleJavaFileObject {
215
216 static final String source_template = "class Test { #C }";
217
218 String source;
219
220 public JavaSource() {
221 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
222 String c3 = cks[2].getSource(cnames[2], cnames[1], "");
223 String c2 = cks[1].getSource(cnames[1], cnames[0], c3);
224 String c1 = cks[0].getSource(cnames[0], "Test", c2);
225 source = source_template.replace("#C", c1);
226 }
227
228 @Override
229 public String toString() {
230 return source;
231 }
232
233 @Override
234 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
235 return source;
236 }
237 }
238 }