/*

 * Copyright (c) 2018, 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.

 *

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 */

/*

 * @test 8187805

 * @summary bogus RuntimeVisibleTypeAnnotations for unused local in a block

 * @modules jdk.jdeps/com.sun.tools.classfile

 *          jdk.compiler/com.sun.tools.javac.util

 * @run main BogusRTTAForUnusedVarTest

 */

import com.sun.tools.classfile.*;

import java.io.File;

import java.lang.annotation.Target;

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import com.sun.tools.classfile.Attribute;

import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;

import com.sun.tools.classfile.TypeAnnotation;

import com.sun.tools.classfile.TypeAnnotation.Position;

import com.sun.tools.javac.util.Assert;

public class BogusRTTAForUnusedVarTest {

    class Foo {

        void something() {

            {

                @MyAnno Object o = new Object();

            }

        }

    }

    @Target(ElementType.TYPE_USE)

    @Retention(RetentionPolicy.RUNTIME)

    @interface MyAnno {}

    public static void main(String args[]) throws Throwable {

        new BogusRTTAForUnusedVarTest().run();

    }

    void run() throws Throwable {

        checkRTTA();

    }

    void checkRTTA() throws Throwable {

        File testClasses = new File(System.getProperty("test.classes"));

        File file = new File(testClasses,

                BogusRTTAForUnusedVarTest.class.getName() + "$Foo.class");

        ClassFile classFile = ClassFile.read(file);

        for (Method m : classFile.methods) {

            if (m.getName(classFile.constant_pool).equals("something")) {

                for (Attribute a : m.attributes) {

                    if (a.getName(classFile.constant_pool).equals("Code")) {

                        Code_attribute code = (Code_attribute)a;

                        for (Attribute codeAttrs : code.attributes) {

                            if (codeAttrs.getName(classFile.constant_pool).equals("RuntimeVisibleTypeAnnotations")) {

                                throw new AssertionError("no RuntimeVisibleTypeAnnotations attribute should have been generated in this case");

                            }

                        }

                    }

                }

            }

        }

    }

}