aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, 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.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
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 8011181
aoqi@0:  * @summary javac, empty UTF8 entry generated for inner class
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.BufferedInputStream;
aoqi@0: import java.nio.file.Files;
aoqi@0: import java.nio.file.Path;
aoqi@0: import java.nio.file.Paths;
aoqi@0: 
aoqi@0: import com.sun.tools.javac.util.Assert;
aoqi@0: import com.sun.tools.classfile.ClassFile;
aoqi@0: 
aoqi@0: import static com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8;
aoqi@0: import static com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;
aoqi@0: import static com.sun.tools.classfile.ConstantPool.CPInfo;
aoqi@0: 
aoqi@0: public class EmptyUTF8ForInnerClassNameTest {
aoqi@0: 
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         new EmptyUTF8ForInnerClassNameTest().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         checkClassFile(Paths.get(System.getProperty("test.classes"),
aoqi@0:                 this.getClass().getName() + "$1.class"));
aoqi@0:         checkClassFile(Paths.get(System.getProperty("test.classes"),
aoqi@0:                 this.getClass().getName() + "$EnumPlusSwitch.class"));
aoqi@0:     }
aoqi@0: 
aoqi@0:     void checkClassFile(final Path path) throws Exception {
aoqi@0:         ClassFile classFile = ClassFile.read(
aoqi@0:                 new BufferedInputStream(Files.newInputStream(path)));
aoqi@0:         for (CPInfo cpInfo : classFile.constant_pool.entries()) {
aoqi@0:             if (cpInfo.getTag() == CONSTANT_Utf8) {
aoqi@0:                 CONSTANT_Utf8_info utf8Info = (CONSTANT_Utf8_info)cpInfo;
aoqi@0:                 Assert.check(utf8Info.value.length() > 0,
aoqi@0:                         "UTF8 with length 0 found at class " + classFile.getName());
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class EnumPlusSwitch {
aoqi@0:         enum E {E1}
aoqi@0: 
aoqi@0:         public int m (E e) {
aoqi@0:             switch (e) {
aoqi@0:                 case E1:
aoqi@0:                     return 0;
aoqi@0:             }
aoqi@0:             return -1;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0: }