| /* |
| * Copyright (c) 2017, 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8056900 |
| * @summary Verifies message returned with NoClassDefFoundError exception. |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.compiler |
| * @run main/native NoClassDefFoundMsg |
| */ |
| |
| import jdk.test.lib.compiler.InMemoryJavaCompiler; |
| import jdk.internal.misc.Unsafe; |
| |
| public class NoClassDefFoundMsg { |
| |
| static native void callDefineClass(String className); |
| static native void callFindClass(String className); |
| static { |
| System.loadLibrary("NoClassDefFoundMsg"); |
| } |
| |
| |
| public static void main(String args[]) throws Exception { |
| Unsafe unsafe = Unsafe.getUnsafe(); |
| |
| byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", "class TestClass { }"); |
| |
| // Create a class name of length 65536. |
| StringBuilder tooBigClassName = new StringBuilder("z"); |
| for (int x = 0; x < 16; x++) { |
| tooBigClassName = tooBigClassName.append(tooBigClassName); |
| } |
| |
| // Test JVM_DefineClass() with long name. |
| try { |
| unsafe.defineClass(tooBigClassName.toString(), klassbuf, 4, klassbuf.length - 4, null, null); |
| throw new RuntimeException("defineClass did not throw expected NoClassDefFoundError"); |
| } catch (NoClassDefFoundError e) { |
| if (!e.getMessage().contains("Class name exceeds maximum length of ")) { |
| throw new RuntimeException("Wrong NoClassDefFoundError: " + e.getMessage()); |
| } |
| } |
| |
| // Test JNI_DefineClass() with long name. |
| try { |
| callDefineClass(tooBigClassName.toString()); |
| throw new RuntimeException("DefineClass did not throw expected NoClassDefFoundError"); |
| } catch (NoClassDefFoundError e) { |
| if (!e.getMessage().contains("Class name exceeds maximum length of ")) { |
| throw new RuntimeException("Wrong NoClassDefFoundError: " + e.getMessage()); |
| } |
| } |
| |
| // Test JNI_FindClass() with long name. |
| try { |
| callFindClass(tooBigClassName.toString()); |
| throw new RuntimeException("DefineClass did not throw expected NoClassDefFoundError"); |
| } catch (NoClassDefFoundError e) { |
| if (!e.getMessage().contains("Class name exceeds maximum length of ")) { |
| throw new RuntimeException("Wrong NoClassDefFoundError: " + e.getMessage()); |
| } |
| } |
| |
| // Test JNI_FindClass() with null name. |
| try { |
| callFindClass(null); |
| throw new RuntimeException("FindClass did not throw expected NoClassDefFoundError"); |
| } catch (NoClassDefFoundError e) { |
| if (!e.getMessage().contains("No class name given")) { |
| throw new RuntimeException("Wrong NoClassDefFoundError: " + e.getMessage()); |
| } |
| } |
| } |
| } |