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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/PatchModule/PatchModuleTestJar.java Normal file
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/*
* Copyright (c) 2016, 2023, 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
* @summary Make sure --patch-module works when a jar file is specified for a module
* @requires vm.flagless
* @library /test/lib
* @modules java.base/jdk.internal.misc
* jdk.jartool/sun.tools.jar
* @compile PatchModuleMain.java
* @run driver PatchModuleTestJar
*/
import jdk.test.lib.compiler.InMemoryJavaCompiler;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.helpers.ClassFileInstaller;
public class PatchModuleTestJar {
private static String moduleJar;
public static void main(String[] args) throws Exception {
// Create a class file in the module java.naming. This class file
// will be put in the javanaming.jar file.
String source = "package javax.naming.spi; " +
"public class NamingManager { " +
" static { " +
" System.out.println(\"I pass!\"); " +
" } " +
"}";
ClassFileInstaller.writeClassToDisk("javax/naming/spi/NamingManager",
InMemoryJavaCompiler.compile("javax.naming.spi.NamingManager", source, "--patch-module=java.naming"),
System.getProperty("test.classes"));
// Build the jar file that will be used for the module "java.naming".
BasicJarBuilder.build("javanaming", "javax/naming/spi/NamingManager");
moduleJar = BasicJarBuilder.getTestJar("javanaming.jar");
// Just to make sure we are not fooled by the class file being on the
// class path where all the test classes are stored, write the NamingManager.class
// file out again with output that does not contain what OutputAnalyzer
// expects. This will provide confidence that the contents of the class
// is truly coming from the jar file and not the class file.
source = "package javax.naming.spi; " +
"public class NamingManager { " +
" static { " +
" System.out.println(\"Fail!\"); " +
" } " +
"}";
ClassFileInstaller.writeClassToDisk("javax/naming/spi/NamingManager",
InMemoryJavaCompiler.compile("javax.naming.spi.NamingManager", source, "--patch-module=java.naming"),
System.getProperty("test.classes"));
// Supply --patch-module with the name of the jar file for the module java.naming.
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("--patch-module=java.naming=" + moduleJar,
"PatchModuleMain", "javax.naming.spi.NamingManager");
new OutputAnalyzer(pb.start())
.shouldContain("I pass!")
.shouldHaveExitValue(0);
}
}