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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
commit 0a580b313d
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101
test/hotspot/jtreg/runtime/logging/ClassResolutionTest.java Normal file
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/*
* Copyright (c) 2016, 2024, 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 ClassResolutionTest
* @bug 8144874 8343633
* @requires vm.flagless
* @modules java.base/jdk.internal.misc
* @library /test/lib
* @run driver ClassResolutionTest
*/
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import java.lang.ref.WeakReference;
import java.lang.reflect.Method;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
public class ClassResolutionTest {
public static class ClassResolutionTestMain {
public static class Thing1 {
public static int getThingNumber() {
return 1;
}
};
public static class Thing1Handler {
public static int getThingNumber() {
return Thing1.getThingNumber();
}
};
public static void main(String... args) throws Exception {
int x = Thing1Handler.getThingNumber();
System.out.println("ThingNumber: "+Integer.toString(x));
}
}
public static void checkOutput(String file, String decorators) throws Exception {
List<String> allLines = Files.readAllLines(Path.of(file));
for (String line : allLines) {
if (!line.contains(decorators)) {
throw new RuntimeException("Logging should contain decorators " + decorators);
}
}
}
public static void main(String... args) throws Exception {
// (1) class+resolve should turn on.
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:class+resolve=debug",
ClassResolutionTestMain.class.getName());
OutputAnalyzer o = new OutputAnalyzer(pb.start());
o.shouldHaveExitValue(0);
o.shouldContain("[class,resolve] ClassResolutionTest$ClassResolutionTestMain$Thing1Handler ClassResolutionTest$ClassResolutionTestMain$Thing1");
o.shouldContain("[class,resolve] resolve JVM_CONSTANT_MethodHandle");
// (2) class+resolve should turn off.
pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:class+resolve=debug",
"-Xlog:class+resolve=off",
ClassResolutionTestMain.class.getName());
o = new OutputAnalyzer(pb.start());
o.shouldHaveExitValue(0);
o.shouldNotContain("[class,resolve]");
// (3) Test perf+class+link writes to a file, not tty.
pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:perf+class+link:output.log",
ClassResolutionTestMain.class.getName());
o = new OutputAnalyzer(pb.start());
o.shouldHaveExitValue(0);
o.shouldNotContain("[perf,class,link]");
checkOutput("output.log", "[perf,class,link]");
};
}