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T4880672.java 
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/*
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 * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 4880672 7031005
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 * @summary javap does not output inner interfaces of an interface
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 * @modules jdk.jdeps/com.sun.tools.javap
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 */
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import java.io.*;
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import java.util.*;
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public class T4880672
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{
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    public static void main(String... args) {
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        new T4880672().run();
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    }
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    void run() {
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        verify("java.util.Map", "public interface java.util.Map$Entry");
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        verify("T4880672", "class T4880672$A$B");
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        verify("C", ""); // must not give error if no InnerClasses attribute
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        if (errors > 0)
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            throw new Error(errors + " found.");
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    }
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    void verify(String className, String... expects) {
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        String output = javap(className);
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        for (String expect: expects) {
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            if (output.indexOf(expect)< 0)
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                error(expect + " not found");
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        }
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    }
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    void error(String msg) {
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        System.err.println(msg);
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        errors++;
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    }
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    int errors;
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    String javap(String className) {
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        String testClasses = System.getProperty("test.classes", ".");
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        StringWriter sw = new StringWriter();
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        PrintWriter out = new PrintWriter(sw);
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        String[] args = { "-XDinner", "-classpath", testClasses, className };
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        int rc = com.sun.tools.javap.Main.run(args, out);
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        out.close();
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        String output = sw.toString();
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        System.out.println("class " + className);
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        System.out.println(output);
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        if (rc != 0)
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            throw new Error("javap failed. rc=" + rc);
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        if (output.indexOf("Error:") != -1)
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            throw new Error("javap reported error.");
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        return output;
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    }
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    class A {
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        class B { }
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    }
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}
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class C { }
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