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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/langtools/tools/javac/VersionOpt.java Normal file
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/*
* Copyright (c) 2005, 2016, 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 6728697
* @summary tools/javac/versionOpt.sh fails on OpenJDK builds
* Test checks the version strings displayed by javac, using
* strings that come out of the Java runtime.
* @modules jdk.compiler
*/
import java.io.File;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
public class VersionOpt {
public static void main(String... args) throws Exception {
new VersionOpt().run();
}
void run() throws Exception {
// Test functions by comparing the version string from javac against
// a "golden" version generated automatically from the underlying JVM.
// As such, it is only effective in testing the "standard" compiler,
// and not any development version being tested via --patch-modules.
// Check the version of the compiler being used, and let the test pass
// automatically if it is a development version.
Class<?> javacClass = com.sun.tools.javac.Main.class;
URL location = javacClass.getProtectionDomain().getCodeSource().getLocation();
if (!location.toString().equals("jrt:/jdk.compiler")) {
System.err.println("javac not found in system image: " + location);
System.err.println("rest of test skipped");
return;
}
System.out.println("javac found in " + location);
String javaVersion = System.getProperty("java.version");
String javaRuntimeVersion = System.getProperty("java.runtime.version");
System.out.println("java.version: " + javaVersion);
System.out.println("java.runtime.version: " + javaRuntimeVersion);
StringWriter sw = new StringWriter();
com.sun.tools.javac.Main.compile(new String[] { "-version" }, new PrintWriter(sw));
String javacVersion = sw.toString().trim();
sw = new StringWriter();
com.sun.tools.javac.Main.compile(new String[] { "-fullversion" }, new PrintWriter(sw));
String javacFullVersion = sw.toString().trim();
System.out.println("javac -version: " + javacVersion);
System.out.println("javac -fullversion: " + javacFullVersion);
checkEqual("javac -version", javacVersion, "javac " + javaVersion);
checkEqual("javac -fullversion", javacFullVersion, "javac full version \"" + javaRuntimeVersion + "\"");
if (errors > 0)
throw new Exception(errors + " errors found");
}
void checkEqual(String kind, String found, String expect) {
if (!found.equals(expect)) {
System.err.println("error: unexpected value for " + kind);
System.err.println("expect: >>" + expect + "<<");
System.err.println(" found: >>" + found + "<<");
errors++;
}
}
int errors;
}