aoqi@0: /*
aoqi@0:  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6863465
aoqi@0:  * @summary  javac doesn't detect circular subclass dependencies via qualified names
aoqi@0:  * @run main TestCircularClassfile
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.*;
aoqi@0: import java.net.URI;
aoqi@0: import java.util.Arrays;
aoqi@0: import javax.tools.Diagnostic;
aoqi@0: import javax.tools.DiagnosticListener;
aoqi@0: import javax.tools.JavaCompiler;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: import javax.tools.SimpleJavaFileObject;
aoqi@0: import javax.tools.ToolProvider;
aoqi@0: 
aoqi@0: import com.sun.source.util.JavacTask;
aoqi@0: import java.util.EnumSet;
aoqi@0: 
aoqi@0: public class TestCircularClassfile {
aoqi@0: 
aoqi@0:     enum ClassName {
aoqi@0:         A("A"),
aoqi@0:         B("B"),
aoqi@0:         C("C"),
aoqi@0:         OBJECT("Object");
aoqi@0: 
aoqi@0:         String name;
aoqi@0: 
aoqi@0:         ClassName(String name) {
aoqi@0:             this.name = name;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class JavaSource extends SimpleJavaFileObject {
aoqi@0: 
aoqi@0:         final static String sourceStub = "class #C extends #S {}";
aoqi@0: 
aoqi@0:         String source;
aoqi@0: 
aoqi@0:         public JavaSource(ClassName clazz, ClassName sup) {
aoqi@0:             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0:             source = sourceStub.replace("#C", clazz.name).replace("#S", sup.name);
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0:             return source;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String... args) throws Exception {
aoqi@0:         int count = 0;
aoqi@0:         for (ClassName clazz : EnumSet.of(ClassName.A, ClassName.B, ClassName.C)) {
aoqi@0:             for (ClassName sup : EnumSet.of(ClassName.A, ClassName.B, ClassName.C)) {
aoqi@0:                 if (sup.ordinal() < clazz.ordinal()) continue;
aoqi@0:                 check("sub_"+count++, clazz, sup);
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static JavaSource[] initialSources = new JavaSource[] {
aoqi@0:             new JavaSource(ClassName.A, ClassName.OBJECT),
aoqi@0:             new JavaSource(ClassName.B, ClassName.A),
aoqi@0:             new JavaSource(ClassName.C, ClassName.B)
aoqi@0:         };
aoqi@0: 
aoqi@0:     static String workDir = System.getProperty("user.dir");
aoqi@0: 
aoqi@0:     static void check(String destPath, ClassName clazz, ClassName sup) throws Exception {
aoqi@0:         File destDir = new File(workDir, destPath); destDir.mkdir();
aoqi@0:         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
aoqi@0:         JavacTask ct = (JavacTask)tool.getTask(null, null, null,
aoqi@0:                 Arrays.asList("-d", destPath), null, Arrays.asList(initialSources));
aoqi@0:         ct.generate();
aoqi@0:         File fileToRemove = new File(destPath, clazz.name + ".class");
aoqi@0:         fileToRemove.delete();
aoqi@0:         JavaSource newSource = new JavaSource(clazz, sup);
aoqi@0:         DiagnosticChecker checker = new DiagnosticChecker();
aoqi@0:         ct = (JavacTask)tool.getTask(null, null, checker,
aoqi@0:                 Arrays.asList("-cp", destPath), null, Arrays.asList(newSource));
aoqi@0:         ct.analyze();
aoqi@0:         if (!checker.errorFound) {
aoqi@0:             throw new AssertionError(newSource.source);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class DiagnosticChecker implements DiagnosticListener<JavaFileObject> {
aoqi@0: 
aoqi@0:         boolean errorFound = false;
aoqi@0: 
aoqi@0:         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
aoqi@0:             if (diagnostic.getKind() == Diagnostic.Kind.ERROR &&
aoqi@0:                     diagnostic.getCode().equals("compiler.err.cyclic.inheritance")) {
aoqi@0:                 errorFound = true;
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: }