jdk8-mips64-public/langtools: test/tools/javac/generics/OverrideBridge.java@20659c8c917d (annotated)

test/tools/javac/generics/OverrideBridge.java@20659c8c917d (annotated)

test/tools/javac/generics/OverrideBridge.java

Tue, 02 Nov 2010 12:00:54 +0000

author: mcimadamore
date: Tue, 02 Nov 2010 12:00:54 +0000
changeset 730: 20659c8c917d
parent 673: 7ae4016c5938
child 1721: abd153854f16
permissions: -rw-r--r--

6996415: Override bridges causes compiler-generated code to end up with synthetic infinite loop
Summary: temporarily disable fix for override bridges (6337171)
Reviewed-by: jjg

 /*
  * Copyright (c) 2010, 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 6337171 6996415
  * @ignore fix has been disabled as a consequence of 6996415
  * @summary  javac should create bridge methods when type variable bounds restricted
  * @run main OverrideBridge
  */
 import java.io.*;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.HashMap;
 import javax.tools.JavaCompiler;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 import javax.tools.ToolProvider;
 import com.sun.source.util.JavacTask;
 import com.sun.tools.classfile.ClassFile;
 import com.sun.tools.classfile.ConstantPoolException;
 import com.sun.tools.classfile.Descriptor.InvalidDescriptor;
 import com.sun.tools.classfile.Method;
 public class OverrideBridge {
     enum Implementation {
         IMPLICIT(""),
         EXPLICIT("@Override public abstract X m(X x);");
         String impl;
         Implementation(String impl) {
             this.impl = impl;
         }
     }
     static class JavaSource extends SimpleJavaFileObject {
         final static String sourceStub =
                         "abstract class A<X> {\n" +
                         "   public abstract X m(X x);\n" +
                         "}\n" +
                         "interface I<X> {\n" +
                         "X m(X x);\n" +
                         "}\n" +
                         "abstract class B<X extends B<X>> extends A<X> implements I<X> { #B }\n" +
                         "abstract class C<X extends C<X>> extends B<X>  { #C }\n" +
                         "abstract class D<X extends D<X>> extends C<X>  { #D }\n";
         String source;
         public JavaSource(Implementation implB, Implementation implC, Implementation implD) {
             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
             source = sourceStub.replace("#B", implB.impl).replace("#C", implC.impl).replace("#D", implD.impl);
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return source;
         }
     }
     public static void main(String... args) throws Exception {
         Map<ClassFile, List<Method>> refMembers =
                 compile(Implementation.EXPLICIT, Implementation.EXPLICIT, Implementation.EXPLICIT, "ref");
         int i = 0;
         for (Implementation implB : Implementation.values()) {
             for (Implementation implC : Implementation.values()) {
                 for (Implementation implD : Implementation.values()) {
                     Map<ClassFile, List<Method>> membersToCheck = compile(implB, implC, implD, "out_" + i++);
                     check(refMembers, membersToCheck);
                 }
             }
         }
     }
     static String workDir = System.getProperty("user.dir");
     static Map<ClassFile, List<Method>> compile(Implementation implB, Implementation implC, Implementation implD, String destPath) throws Exception {
         File destDir = new File(workDir, destPath); destDir.mkdir();
         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
         JavaSource source = new JavaSource(implB, implC, implD);
         JavacTask ct = (JavacTask)tool.getTask(null, null, null,
                 Arrays.asList("-d", destPath), null, Arrays.asList(source));
         ct.generate();
         Map<ClassFile, List<Method>> members = new HashMap<>();
         addMembers(destDir, members);
         return members;
     }
     static void addMembers(File destDir, Map<ClassFile, List<Method>> members) {
         String[] names = { "B.class", "C.class", "D.class" };
         try {
             for (String name : names) {
                 File f = new File(destDir, name);
                 ClassFile cf = ClassFile.read(f);
                 members.put(cf, readMethod(cf, "m"));
             }
         } catch (Exception e) {
             e.printStackTrace();
             throw new Error("error reading classes");
         }
     }
     static List<Method> readMethod(ClassFile cf, String name) throws ConstantPoolException {
         List<Method> buf = new ArrayList<>();
         for (Method m : cf.methods) {
             if (m.getName(cf.constant_pool).equals(name)) {
                 buf.add(m);
             }
         }
         return buf;
     }
     static void check(Map<ClassFile, List<Method>> refMembers, Map<ClassFile, List<Method>> membersToCheck) throws ConstantPoolException, InvalidDescriptor {
         for (Map.Entry<ClassFile, List<Method>> ref : refMembers.entrySet()) {
             ClassFile cRef = ref.getKey();
             for (Method mRef : ref.getValue()) {
                 boolean ok = false;
                 for (Map.Entry<ClassFile, List<Method>> toCheck : membersToCheck.entrySet()) {
                     ClassFile cToCheck = toCheck.getKey();
                     for (Method mToCheck : toCheck.getValue()) {
                         if (cRef.getName().equals(cToCheck.getName()) &&
                                 mRef.descriptor.getReturnType(cRef.constant_pool).equals(
                                 mToCheck.descriptor.getReturnType(cToCheck.constant_pool)) &&
                                 mRef.descriptor.getParameterTypes(cRef.constant_pool).equals(
                                 mToCheck.descriptor.getParameterTypes(cToCheck.constant_pool))) {
                             ok = true;
                         }
                     }
                 }
                 if (!ok) {
                     throw new AssertionError("Matching method descriptor for " + mRef.descriptor.getParameterTypes(cRef.constant_pool) + "not found");
                 }
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/generics/OverrideBridge.java@20659c8c917d (annotated)

test/tools/javac/generics/OverrideBridge.java