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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/hotspot/jtreg/runtime/modules/AccessCheckSuper.java Normal file
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/*
* Copyright (c) 2016, 2022, 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
* @modules java.base/jdk.internal.misc
* @library /test/lib ..
* @compile p2/c2.java
* @compile p3/c3.java
* @build jdk.test.whitebox.WhiteBox
* @compile/module=java.base java/lang/ModuleHelper.java
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI AccessCheckSuper
*/
import static jdk.test.lib.Asserts.*;
public class AccessCheckSuper {
// Test that when a class cannot access its super class the message
// contains both "superclass" text and module text.
public static void main(String args[]) throws Throwable {
// Get the class loader for AccessCheckSuper and assume it's also used to
// load class p2.c2 and class p3.c3.
ClassLoader this_cldr = AccessCheckSuper.class.getClassLoader();
// Define a module for p2.
Object m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
assertNotNull(m2x, "Module should not be null");
ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" });
// Define a module for p3.
Object m3x = ModuleHelper.ModuleObject("module_three", this_cldr, new String[] { "p3" });
assertNotNull(m3x, "Module should not be null");
ModuleHelper.DefineModule(m3x, false, "9.0", "m3x/there", new String[] { "p3" });
// Since a readability edge has not been established between module_two
// and module_three, p3.c3 cannot read its superclass p2.c2.
try {
Class p3_c3_class = Class.forName("p3.c3");
throw new RuntimeException("Failed to get IAE (can't read superclass)");
} catch (IllegalAccessError e) {
if (!e.getMessage().contains("superclass access check failed") ||
!e.getMessage().contains("does not read")) {
throw new RuntimeException("Wrong message: " + e.getMessage());
}
}
}
}