1 /*

     2  * Copyright (c) 2013, 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

    26  * @bug 8025087

    27  * @summary Verify that pre-JDK8 classfiles with default and/or static methods

    28  *          are refused correctly.

    29  * @build BadClassfile

    30  * @run main BadClassfile

    31  */

    32 

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

    34 import com.sun.tools.javac.api.JavacTaskImpl;

    35 import com.sun.tools.javac.code.Symbol;

    36 import com.sun.tools.javac.jvm.ClassReader.BadClassFile;

    37 import com.sun.tools.javac.jvm.Target;

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

    39 import com.sun.tools.javac.util.JCDiagnostic;

    40 import java.io.File;

    41 import java.util.Arrays;

    42 import java.util.Objects;

    43 import javax.tools.JavaCompiler;

    44 import javax.tools.ToolProvider;

    45 

    46 public class BadClassfile {

    47     public static void main(String... args) throws Exception {

    48         test("BadClassfile$DefaultMethodTest", "compiler.misc.invalid.default.interface");

    49         test("BadClassfile$StaticMethodTest", "compiler.misc.invalid.static.interface");

    50     }

    51 

    52     private static void test(String classname, String expected) throws Exception {

    53         File classfile = new File(System.getProperty("test.classes", "."), classname + ".class");

    54         ClassFile cf = ClassFile.read(classfile);

    55 

    56         cf = new ClassFile(cf.magic, Target.JDK1_7.minorVersion,

    57                  Target.JDK1_7.majorVersion, cf.constant_pool, cf.access_flags,

    58                 cf.this_class, cf.super_class, cf.interfaces, cf.fields,

    59                 cf.methods, cf.attributes);

    60 

    61         new ClassWriter().write(cf, classfile);

    62 

    63         JavaCompiler c = ToolProvider.getSystemJavaCompiler();

    64         JavacTaskImpl task = (JavacTaskImpl) c.getTask(null, null, null, Arrays.asList("-classpath", System.getProperty("test.classes", ".")), null, null);

    65 

    66         try {

    67             Symbol clazz = com.sun.tools.javac.main.JavaCompiler.instance(task.getContext()).resolveIdent(classname);

    68 

    69             clazz.complete();

    70         } catch (BadClassFile f) {

    71             JCDiagnostic embeddedDiag = (JCDiagnostic) f.diag.getArgs()[1];

    72             assertEquals(expected, embeddedDiag.getCode());

    73             assertEquals(Integer.toString(Target.JDK1_7.majorVersion), embeddedDiag.getArgs()[0]);

    74             assertEquals(Integer.toString(Target.JDK1_7.minorVersion), embeddedDiag.getArgs()[1]);

    75         }

    76     }

    77 

    78     private static void assertEquals(Object expected, Object actual) {

    79         Assert.check(Objects.equals(expected, actual),

    80                      "expected: " + expected + ", but was: " + actual);

    81     }

    82 

    83     interface DefaultMethodTest {

    84         default void test() { }

    85     }

    86     interface StaticMethodTest {

    87         static void test() { }

    88     }

    89 }