1 /*
   2  * Copyright (c) 2017, 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 8056900
  27  * @summary Verifies message returned with NoClassDefFoundError exception.
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.compiler
  31  * @run main/native NoClassDefFoundMsg
  32  */
  33 
  34 import jdk.test.lib.compiler.InMemoryJavaCompiler;
  35 import jdk.internal.misc.Unsafe;
  36 
  37 public class NoClassDefFoundMsg {
  38 
  39     static native void callDefineClass(String className);
  40     static native void callFindClass(String className);
  41     static {
  42         System.loadLibrary("NoClassDefFoundMsg");
  43     }
  44 
  45 
  46     public static void main(String args[]) throws Exception {
  47         Unsafe unsafe = Unsafe.getUnsafe();
  48 
  49         byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", "class TestClass { }");
  50 
  51         // Create a class name of length 65536.
  52         StringBuilder tooBigClassName = new StringBuilder("z");
  53         for (int x = 0; x < 16; x++) {
  54             tooBigClassName = tooBigClassName.append(tooBigClassName);
  55         }
  56 
  57         // Test JVM_DefineClass() with long name.
  58         try {
  59             unsafe.defineClass(tooBigClassName.toString(), klassbuf, 4, klassbuf.length - 4, null, null);
  60             throw new RuntimeException("defineClass did not throw expected NoClassDefFoundError");
  61         } catch (NoClassDefFoundError e) {
  62             if (!e.getMessage().contains("Class name exceeds maximum length of ")) {

   1 /*
   2  * Copyright (c) 2017, 2019, 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 8056900
  27  * @summary Verifies message returned with NoClassDefFoundError exception.
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.compiler
  31  * @run main/native NoClassDefFoundErrorTest
  32  */
  33 
  34 import jdk.test.lib.compiler.InMemoryJavaCompiler;
  35 import jdk.internal.misc.Unsafe;
  36 
  37 public class NoClassDefFoundErrorTest {
  38 
  39     static native void callDefineClass(String className);
  40     static native void callFindClass(String className);
  41     static {
  42         System.loadLibrary("NoClassDefFoundErrorTest");
  43     }
  44 
  45 
  46     public static void main(String args[]) throws Exception {
  47         Unsafe unsafe = Unsafe.getUnsafe();
  48 
  49         byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", "class TestClass { }");
  50 
  51         // Create a class name of length 65536.
  52         StringBuilder tooBigClassName = new StringBuilder("z");
  53         for (int x = 0; x < 16; x++) {
  54             tooBigClassName = tooBigClassName.append(tooBigClassName);
  55         }
  56 
  57         // Test JVM_DefineClass() with long name.
  58         try {
  59             unsafe.defineClass(tooBigClassName.toString(), klassbuf, 4, klassbuf.length - 4, null, null);
  60             throw new RuntimeException("defineClass did not throw expected NoClassDefFoundError");
  61         } catch (NoClassDefFoundError e) {
  62             if (!e.getMessage().contains("Class name exceeds maximum length of ")) {