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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/ModuleStress/ModuleStressGC.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
* @bug 8159262
* @summary layers over the boot layer are repeatedly created, during this iteration, GCs are forced to verify correct walk of module and package lists.
* @requires vm.flagless
* @modules java.base/jdk.internal.misc
* @library /test/lib
* @compile ../CompilerUtils.java
* @run driver ModuleStressGC
*/
import java.nio.file.Path;
import java.nio.file.Paths;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class ModuleStressGC {
private static final String TEST_SRC = System.getProperty("test.src");
private static final String TEST_CLASSES = System.getProperty("test.classes");
private static final Path SRC_DIR = Paths.get(TEST_SRC, "src");
private static final Path MODS_DIR = Paths.get(TEST_CLASSES, "mods");
/**
* Compile two module definitions used by the test, jdk.test and jdk.translet.
*/
public static void main(String[] args) throws Exception {
boolean compiled;
// Compile module jdk.test declaration
compiled = CompilerUtils.compile(
SRC_DIR.resolve("jdk.test"),
MODS_DIR.resolve("jdk.test"));
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.test");
}
// Compile module jdk.translet declaration
compiled = CompilerUtils.compile(
SRC_DIR.resolve("jdk.translet"),
MODS_DIR.resolve("jdk.translet"),
"--add-exports=jdk.test/test=jdk.translet",
"-p", MODS_DIR.toString());
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.translet");
}
// Check that jdk.test/test.MainGC walks module jdk.test's
// reads list and walks the exports list for package test,
// defined in module jdk.test, during a GC.
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
"-Xmx128m",
"-Xlog:module=trace",
"-p", MODS_DIR.toString(),
"-m", "jdk.test/test.MainGC");
OutputAnalyzer oa = new OutputAnalyzer(pb.start());
oa.shouldContain("package test defined in module jdk.test, exports list being walked")
.shouldContain("module jdk.test reads list being walked")
.shouldHaveExitValue(0);
}
}