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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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test/langtools/tools/javac/platform/CanHandleClassFilesTest.java Normal file
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/*
* Copyright (c) 2018, 2025, 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 8207954
* @summary Verify that CreateSymbols can handle classfiles from the current release.
* @library /tools/lib /tools/javac/lib
* @modules jdk.compiler/com.sun.tools.javac.api:+open
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.jvm:+open
* jdk.compiler/com.sun.tools.javac.util:+open
* @build toolbox.ToolBox toolbox.JavacTask toolbox.Task
* @run main CanHandleClassFilesTest
*/
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.stream.Stream;
import javax.lang.model.SourceVersion;
import javax.tools.StandardLocation;
import toolbox.JavacTask;
import toolbox.ToolBox;
public class CanHandleClassFilesTest {
public static void main(String... args) throws Exception {
new CanHandleClassFilesTest().run();
}
void run() throws Exception {
var testSrc = Paths.get(System.getProperty("test.src", "."));
var targetDir = Paths.get(".");
Path createSymbols = null;
Path includeList = null;
for (Path d = testSrc; d != null; d = d.getParent()) {
if (Files.exists(d.resolve("TEST.ROOT"))) {
d = d.getParent().getParent();
Path test = d.resolve("make/langtools/src/classes/build/tools/symbolgenerator/CreateSymbols.java");
if (Files.exists(test)) {
createSymbols = test;
includeList = d.resolve("src/jdk.compiler/share/data/symbols/include.list");
break;
}
}
}
if (createSymbols == null || includeList == null || !Files.isReadable(includeList)) {
System.err.println("Warning: sources not found, test skipped.");
return ;
}
try (ToolBox.MemoryFileManager mfm = new ToolBox.MemoryFileManager()) {
ToolBox tb = new ToolBox();
new JavacTask(tb)
.options("--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
"--add-exports", "jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED",
"--add-exports", "jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED",
"--add-modules", "jdk.jdeps")
.files(createSymbols)
.fileManager(mfm)
.run()
.writeAll();
ClassLoader cl = new ClassLoader() {
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
byte[] data = mfm.getFileBytes(StandardLocation.CLASS_OUTPUT, name);
if (data != null) {
return defineClass(name, data, 0, data.length);
} else {
throw new ClassNotFoundException(name);
}
}
};
// open the non-exported packages needed by CreateSymbols to its module
Module targetModule = cl.getUnnamedModule();
Stream.of("jdk.compiler/com.sun.tools.javac.api",
"jdk.compiler/com.sun.tools.javac.jvm",
"jdk.compiler/com.sun.tools.javac.util")
.forEach(p -> open(p, targetModule));
var createSymbolsClass = Class.forName("build.tools.symbolgenerator.CreateSymbols", false, cl);
var main = createSymbolsClass.getMethod("main", String[].class);
var symbols = targetDir.resolve("symbols");
var modules = targetDir.resolve("modules");
var modulesList = targetDir.resolve("modules-list");
try (Writer w = Files.newBufferedWriter(symbols)) {}
Files.createDirectories(modules);
try (Writer w = Files.newBufferedWriter(modulesList)) {}
main.invoke(null,
(Object) new String[] {"build-description-incremental",
symbols.toAbsolutePath().toString(),
includeList.toAbsolutePath().toString()});
main.invoke(null,
(Object) new String[] {"build-ctsym",
"does-not-exist",
symbols.toAbsolutePath().toString(),
targetDir.resolve("ct.sym").toAbsolutePath().toString(),
Long.toString(System.currentTimeMillis() / 1000),
"" + SourceVersion.latest().ordinal(),
"",
modules.toAbsolutePath().toString(),
modulesList.toAbsolutePath().toString()});
}
}
void open(String moduleAndPackage, Module target) {
String[] s = moduleAndPackage.split("/");
var moduleName = s[0];
var packageName = s[1];
ModuleLayer.boot().findModule(moduleName).orElseThrow().addOpens(packageName, target);
}
}