130 lines
4.7 KiB
Java
130 lines
4.7 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 7044282
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* @build Class1 Class2 Class3 Class4
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* @run main ExceedMaxDim
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* @summary Make sure you can't get an array class of dimension > 255.
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*/
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// Class1, Class2, Class3 and Class4 should not have been loaded prior to the
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// calls to forName
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public class ExceedMaxDim {
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//0123456789012345678901234567890123456789
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private String brackets = "[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[" +
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"[[[[[[[[[[[[[[";
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private String name254 = brackets + "Ljava.lang.String;";
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private String name255 = "[" + name254;
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private String name256 = "[" + name255;
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private String name1 = "[Ljava.lang.String;";
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private String bigName;
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private int error = 0;
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private static final ClassLoader IMPLICIT_LOADER = null;
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public ExceedMaxDim() {
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super();
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StringBuilder sb = new StringBuilder(Short.MAX_VALUE + 50);
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for (int i = 0; i < Short.MAX_VALUE + 20; i++)
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sb.append('[');
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sb.append("Ljava.lang.String;");
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bigName = sb.toString();
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if (name256.lastIndexOf('[') != 255) // 256:th [
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throw new RuntimeException("Test broken");
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}
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public static void main(String[] args) throws Exception {
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ExceedMaxDim test = new ExceedMaxDim();
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test.testImplicitLoader();
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test.testOtherLoader();
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if (test.error != 0)
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throw new RuntimeException("Test failed, was able to create array with dim > 255." +
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" See log for details.");
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}
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private void testImplicitLoader() throws Exception {
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// These four should succeed
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assertSucceedForName(name1, IMPLICIT_LOADER);
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assertSucceedForName(name254, IMPLICIT_LOADER);
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assertSucceedForName(name255, IMPLICIT_LOADER);
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assertSucceedForName(brackets + "[LClass1;", IMPLICIT_LOADER);
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// The following three should fail
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assertFailForName(name256, IMPLICIT_LOADER);
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assertFailForName(bigName, IMPLICIT_LOADER);
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assertFailForName(brackets + "[[LClass2;", IMPLICIT_LOADER);
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}
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private void testOtherLoader() throws Exception {
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ClassLoader cl = ExceedMaxDim.class.getClassLoader();
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// These four should succeed
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assertSucceedForName(name1, cl);
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assertSucceedForName(name254,cl);
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assertSucceedForName(name255, cl);
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assertSucceedForName(brackets + "[LClass3;", cl);
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// The following three should fail
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assertFailForName(name256, cl);
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assertFailForName(bigName, cl);
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assertFailForName(brackets + "[[Class4;", cl);
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}
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private void assertFailForName(String name, ClassLoader cl) {
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Class<?> c;
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try {
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if (cl == null)
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c = Class.forName(name);
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else
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c = Class.forName(name, true, cl);
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error++;
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System.err.println("ERROR: could create " + c);
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} catch (ClassNotFoundException e) {
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;// ok
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}
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}
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private void assertSucceedForName(String name, ClassLoader cl) {
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Class<?> c;
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try {
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if (cl == null)
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c = Class.forName(name);
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else
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c = Class.forName(name, true, cl);
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} catch (ClassNotFoundException e) {
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error++;
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System.err.println("ERROR: could not create " + name);
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}
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}
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}
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