| /* |
| * Copyright (c) 2011, 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 7079713 |
| * @summary javac hangs when compiling a class that references a cyclically inherited class |
| * @modules jdk.compiler |
| * @run main TestCircularClassfile |
| */ |
| |
| import java.io.*; |
| import java.net.URI; |
| import java.util.Arrays; |
| import javax.tools.JavaCompiler; |
| import javax.tools.JavaFileObject; |
| import javax.tools.SimpleJavaFileObject; |
| import javax.tools.StandardJavaFileManager; |
| import javax.tools.StandardLocation; |
| import javax.tools.ToolProvider; |
| |
| import com.sun.source.util.JavacTask; |
| |
| public class TestCircularClassfile { |
| |
| enum SourceKind { |
| A_EXTENDS_B("class B {} class A extends B { void m() {} }"), |
| B_EXTENDS_A("class A { void m() {} } class B extends A {}"); |
| |
| String sourceStr; |
| |
| private SourceKind(String sourceStr) { |
| this.sourceStr = sourceStr; |
| } |
| |
| SimpleJavaFileObject getSource() { |
| return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) { |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| return sourceStr; |
| } |
| }; |
| } |
| } |
| |
| enum TestKind { |
| REPLACE_A("A.class"), |
| REPLACE_B("B.class"); |
| |
| String targetClass; |
| |
| private TestKind(String targetClass) { |
| this.targetClass = targetClass; |
| } |
| } |
| |
| enum ClientKind { |
| METHOD_CALL1("A a = null; a.m();"), |
| METHOD_CALL2("B b = null; b.m();"), |
| CONSTR_CALL1("new A();"), |
| CONSTR_CALL2("new B();"), |
| ASSIGN1("A a = null; B b = a;"), |
| ASSIGN2("B b = null; A a = b;"); |
| |
| String mainMethod; |
| |
| private ClientKind(String mainMethod) { |
| this.mainMethod = mainMethod; |
| } |
| |
| SimpleJavaFileObject getSource() { |
| return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) { |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| return "class Test { public static void main(String[] args) { #M } }" |
| .replace("#M", mainMethod); |
| } |
| }; |
| } |
| } |
| |
| public static void main(String... args) throws Exception { |
| JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
| try (StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null)) { |
| int count = 0; |
| for (SourceKind sk1 : SourceKind.values()) { |
| for (SourceKind sk2 : SourceKind.values()) { |
| for (TestKind tk : TestKind.values()) { |
| for (ClientKind ck : ClientKind.values()) { |
| new TestCircularClassfile("sub_"+count++, sk1, sk2, tk, ck).check(comp, fm); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static String workDir = System.getProperty("user.dir"); |
| |
| String destPath; |
| SourceKind sk1; |
| SourceKind sk2; |
| TestKind tk; |
| ClientKind ck; |
| |
| TestCircularClassfile(String destPath, SourceKind sk1, SourceKind sk2, TestKind tk, ClientKind ck) { |
| this.destPath = destPath; |
| this.sk1 = sk1; |
| this.sk2 = sk2; |
| this.tk = tk; |
| this.ck = ck; |
| } |
| |
| void check(JavaCompiler comp, StandardJavaFileManager fm) throws Exception { |
| //step 1: compile first source code in the test subfolder |
| File destDir = new File(workDir, destPath); destDir.mkdir(); |
| //output dir must be set explicitly as we are sharing the fm (see bug 7026941) |
| fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir)); |
| JavacTask ct = (JavacTask)comp.getTask(null, fm, null, |
| null, null, Arrays.asList(sk1.getSource())); |
| ct.generate(); |
| |
| //step 2: compile second source code in a temp folder |
| File tmpDir = new File(destDir, "tmp"); tmpDir.mkdir(); |
| //output dir must be set explicitly as we are sharing the fm (see bug 7026941) |
| fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(tmpDir)); |
| ct = (JavacTask)comp.getTask(null, fm, null, |
| null, null, Arrays.asList(sk2.getSource())); |
| ct.generate(); |
| |
| //step 3: move a classfile from the temp folder to the test subfolder |
| File fileToMove = new File(tmpDir, tk.targetClass); |
| File target = new File(destDir, tk.targetClass); |
| target.delete(); |
| boolean success = fileToMove.renameTo(target); |
| |
| if (!success) { |
| throw new AssertionError("error when moving file " + tk.targetClass); |
| } |
| |
| //step 4: compile the client class against the classes in the test subfolder |
| //input/output dir must be set explicitly as we are sharing the fm (see bug 7026941) |
| fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir)); |
| fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(destDir)); |
| ct = (JavacTask)comp.getTask(null, fm, null, |
| null, null, Arrays.asList(ck.getSource())); |
| |
| ct.generate(); |
| } |
| } |