1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test 8187805

    26  * @summary bogus RuntimeVisibleTypeAnnotations for unused local in a block

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

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

    29  * @run main BogusRTTAForUnusedVarTest

    30  */

    31 

    32 import com.sun.tools.classfile.*;

    33 

    34 import java.io.File;

    35 import java.lang.annotation.Target;

    36 import java.lang.annotation.ElementType;

    37 import java.lang.annotation.Retention;

    38 import java.lang.annotation.RetentionPolicy;

    39 

    40 import com.sun.tools.classfile.Attribute;

    41 import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;

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

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

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

    45 

    46 public class BogusRTTAForUnusedVarTest {

    47 

    48     class Foo {

    49         void something() {

    50             {

    51                 @MyAnno Object o = new Object();

    52             }

    53         }

    54     }

    55 

    56     @Target(ElementType.TYPE_USE)

    57     @Retention(RetentionPolicy.RUNTIME)

    58     @interface MyAnno {}

    59 

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

    61         new BogusRTTAForUnusedVarTest().run();

    62     }

    63 

    64     void run() throws Throwable {

    65         checkRTTA();

    66     }

    67 

    68     void checkRTTA() throws Throwable {

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

    70         File file = new File(testClasses,

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

    72         ClassFile classFile = ClassFile.read(file);

    73         for (Method m : classFile.methods) {

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

    75                 for (Attribute a : m.attributes) {

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

    77                         Code_attribute code = (Code_attribute)a;

    78                         for (Attribute codeAttrs : code.attributes) {

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

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

    81                             }

    82                         }

    83                     }

    84                 }

    85             }

    86         }

    87     }

    88 }