1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/7079713/TestCircularClassfile.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,168 @@
1.4 +/*
1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 7079713
1.30 + * @summary javac hangs when compiling a class that references a cyclically inherited class
1.31 + * @run main TestCircularClassfile
1.32 + */
1.33 +
1.34 +import java.io.*;
1.35 +import java.net.URI;
1.36 +import java.util.Arrays;
1.37 +import javax.tools.JavaCompiler;
1.38 +import javax.tools.JavaFileObject;
1.39 +import javax.tools.SimpleJavaFileObject;
1.40 +import javax.tools.StandardJavaFileManager;
1.41 +import javax.tools.StandardLocation;
1.42 +import javax.tools.ToolProvider;
1.43 +
1.44 +import com.sun.source.util.JavacTask;
1.45 +
1.46 +public class TestCircularClassfile {
1.47 +
1.48 + enum SourceKind {
1.49 + A_EXTENDS_B("class B {} class A extends B { void m() {} }"),
1.50 + B_EXTENDS_A("class A { void m() {} } class B extends A {}");
1.51 +
1.52 + String sourceStr;
1.53 +
1.54 + private SourceKind(String sourceStr) {
1.55 + this.sourceStr = sourceStr;
1.56 + }
1.57 +
1.58 + SimpleJavaFileObject getSource() {
1.59 + return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) {
1.60 + @Override
1.61 + public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
1.62 + return sourceStr;
1.63 + }
1.64 + };
1.65 + }
1.66 + }
1.67 +
1.68 + enum TestKind {
1.69 + REPLACE_A("A.class"),
1.70 + REPLACE_B("B.class");
1.71 +
1.72 + String targetClass;
1.73 +
1.74 + private TestKind(String targetClass) {
1.75 + this.targetClass = targetClass;
1.76 + }
1.77 + }
1.78 +
1.79 + enum ClientKind {
1.80 + METHOD_CALL1("A a = null; a.m();"),
1.81 + METHOD_CALL2("B b = null; b.m();"),
1.82 + CONSTR_CALL1("new A();"),
1.83 + CONSTR_CALL2("new B();"),
1.84 + ASSIGN1("A a = null; B b = a;"),
1.85 + ASSIGN2("B b = null; A a = b;");
1.86 +
1.87 + String mainMethod;
1.88 +
1.89 + private ClientKind(String mainMethod) {
1.90 + this.mainMethod = mainMethod;
1.91 + }
1.92 +
1.93 + SimpleJavaFileObject getSource() {
1.94 + return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) {
1.95 + @Override
1.96 + public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
1.97 + return "class Test { public static void main(String[] args) { #M } }"
1.98 + .replace("#M", mainMethod);
1.99 + }
1.100 + };
1.101 + }
1.102 + }
1.103 +
1.104 + public static void main(String... args) throws Exception {
1.105 + JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
1.106 + StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
1.107 + int count = 0;
1.108 + for (SourceKind sk1 : SourceKind.values()) {
1.109 + for (SourceKind sk2 : SourceKind.values()) {
1.110 + for (TestKind tk : TestKind.values()) {
1.111 + for (ClientKind ck : ClientKind.values()) {
1.112 + new TestCircularClassfile("sub_"+count++, sk1, sk2, tk, ck).check(comp, fm);
1.113 + }
1.114 + }
1.115 + }
1.116 + }
1.117 + }
1.118 +
1.119 + static String workDir = System.getProperty("user.dir");
1.120 +
1.121 + String destPath;
1.122 + SourceKind sk1;
1.123 + SourceKind sk2;
1.124 + TestKind tk;
1.125 + ClientKind ck;
1.126 +
1.127 + TestCircularClassfile(String destPath, SourceKind sk1, SourceKind sk2, TestKind tk, ClientKind ck) {
1.128 + this.destPath = destPath;
1.129 + this.sk1 = sk1;
1.130 + this.sk2 = sk2;
1.131 + this.tk = tk;
1.132 + this.ck = ck;
1.133 + }
1.134 +
1.135 + void check(JavaCompiler comp, StandardJavaFileManager fm) throws Exception {
1.136 + //step 1: compile first source code in the test subfolder
1.137 + File destDir = new File(workDir, destPath); destDir.mkdir();
1.138 + //output dir must be set explicitly as we are sharing the fm (see bug 7026941)
1.139 + fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
1.140 + JavacTask ct = (JavacTask)comp.getTask(null, fm, null,
1.141 + null, null, Arrays.asList(sk1.getSource()));
1.142 + ct.generate();
1.143 +
1.144 + //step 2: compile second source code in a temp folder
1.145 + File tmpDir = new File(destDir, "tmp"); tmpDir.mkdir();
1.146 + //output dir must be set explicitly as we are sharing the fm (see bug 7026941)
1.147 + fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(tmpDir));
1.148 + ct = (JavacTask)comp.getTask(null, fm, null,
1.149 + null, null, Arrays.asList(sk2.getSource()));
1.150 + ct.generate();
1.151 +
1.152 + //step 3: move a classfile from the temp folder to the test subfolder
1.153 + File fileToMove = new File(tmpDir, tk.targetClass);
1.154 + File target = new File(destDir, tk.targetClass);
1.155 + target.delete();
1.156 + boolean success = fileToMove.renameTo(target);
1.157 +
1.158 + if (!success) {
1.159 + throw new AssertionError("error when moving file " + tk.targetClass);
1.160 + }
1.161 +
1.162 + //step 4: compile the client class against the classes in the test subfolder
1.163 + //input/output dir must be set explicitly as we are sharing the fm (see bug 7026941)
1.164 + fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
1.165 + fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(destDir));
1.166 + ct = (JavacTask)comp.getTask(null, fm, null,
1.167 + null, null, Arrays.asList(ck.getSource()));
1.168 +
1.169 + ct.generate();
1.170 + }
1.171 +}
