9c5c6947cb
Fix to obtain the class loader's name from the java.lang.ClassLoader object instead of its ClassLoaderData. Reviewed-by: coleenp, mbalao, sgehwolf
84 lines
3.9 KiB
Java
84 lines
3.9 KiB
Java
/*
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* Copyright (c) 2018, 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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/**
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* @test
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* @bug 8199852
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* @summary Test exception messages of LinkageError with a parent class loader
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* that is not known to the VM. A class loader loads
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* twice the same class. Should trigger exception in
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* SystemDictionary::check_constraints().
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* @compile ../common/Foo.java
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* @compile ../common/J.java
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* @compile ParentClassLoader.java
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* PreemptingChildClassLoader.java
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* @run main/othervm Test
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*/
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public class Test {
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// Check that all names have external formatting ('.' and not '/' in package names).
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// Check for parent of class loader.
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// Break expectedErrorMessage into 2 parts due to the class loader name containing
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// the unique @<id> identity hash which cannot be compared against.
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// Check that all names have external formatting ('.' and not '/' in package names).
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// Check for name and parent of class loader. Type should be mentioned as 'class'.
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static String expectedErrorMessage_part1 = "loader 'DuplicateParentLE_Test_Loader' @";
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static String expectedErrorMessage_part2 = " attempted duplicate class definition for test.Foo. (test.Foo is in unnamed module of loader 'DuplicateParentLE_Test_Loader' @";
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static String expectedErrorMessage_part3 = ", parent loader ParentClassLoader @";
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// Test that the error message is correct when a loader constraint error is
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// detected during vtable creation.
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//
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// In this test, during vtable creation for class Task, method "Task.m()LFoo;"
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// overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
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// are different. So, a LinkageError exception should be thrown because the
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// loader constraint check will fail.
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public static void test(String loaderName,
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String testType) throws Exception {
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String[] classNames = {testType};
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ClassLoader l = new PreemptingChildClassLoader(loaderName, classNames, false);
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l.loadClass(testType);
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try {
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l.loadClass(testType).newInstance();
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throw new RuntimeException("Expected LinkageError exception not thrown");
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} catch (LinkageError e) {
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String errorMsg = e.getMessage();
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if (!errorMsg.contains(expectedErrorMessage_part1) ||
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!errorMsg.contains(expectedErrorMessage_part2) ||
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!errorMsg.contains(expectedErrorMessage_part3)) {
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System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" +
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"but got: " + errorMsg);
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throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg);
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}
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System.out.println("Passed with message: " + errorMsg);
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}
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}
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public static void main(String args[]) throws Exception {
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test("DuplicateParentLE_Test_Loader", "test.Foo");
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}
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}
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