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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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159
test/hotspot/jtreg/runtime/ConstantPool/IntfMethod.java Normal file
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/*
* Copyright (c) 2016, 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 8087223
* @summary Adding constantTag to keep method call consistent with it.
* @library /testlibrary/asm
* @modules java.base/jdk.internal.misc
* java.management
* @compile -XDignore.symbol.file IntfMethod.java
* @run main/othervm IntfMethod
* @run main/othervm -Xint IntfMethod
* @run main/othervm -Xcomp IntfMethod
*/
import org.objectweb.asm.*;
import java.io.FileOutputStream;
import java.lang.reflect.InvocationTargetException;
import static org.objectweb.asm.Opcodes.*;
public class IntfMethod {
static byte[] dumpC() {
ClassWriter cw = new ClassWriter(0);
cw.visit(52, ACC_PUBLIC | ACC_SUPER, "C", null, "java/lang/Object", new String[]{"I"});
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testSpecialIntf", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "I", "f1", "()V", /*itf=*/false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testStaticIntf", "()V", null, null);
mv.visitCode();
mv.visitMethodInsn(INVOKESTATIC, "I", "f2", "()V", /*itf=*/false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testSpecialClass", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "C", "f1", "()V", /*itf=*/true);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f2", "()V", null, null);
mv.visitCode();
mv.visitInsn(RETURN);
mv.visitMaxs(0, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testStaticClass", "()V", null, null);
mv.visitCode();
mv.visitMethodInsn(INVOKESTATIC, "C", "f2", "()V", /*itf=*/true);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
static byte[] dumpI() {
ClassWriter cw = new ClassWriter(0);
cw.visit(52, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "I", null, "java/lang/Object", null);
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "f1", "()V", null, null);
mv.visitCode();
mv.visitInsn(RETURN);
mv.visitMaxs(0, 1);
mv.visitEnd();
}
{
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f2", "()V", null, null);
mv.visitCode();
mv.visitInsn(RETURN);
mv.visitMaxs(0, 1);
mv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
static class CL extends ClassLoader {
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
byte[] classFile;
switch (name) {
case "I": classFile = dumpI(); break;
case "C": classFile = dumpC(); break;
default:
throw new ClassNotFoundException(name);
}
return defineClass(name, classFile, 0, classFile.length);
}
}
public static void main(String[] args) throws Throwable {
Class<?> cls = (new CL()).loadClass("C");
try (FileOutputStream fos = new FileOutputStream("I.class")) { fos.write(dumpI()); }
try (FileOutputStream fos = new FileOutputStream("C.class")) { fos.write(dumpC()); }
int success = 0;
for (String name : new String[] { "testSpecialIntf", "testStaticIntf", "testSpecialClass", "testStaticClass"}) {
System.out.printf("%s: ", name);
try {
cls.getMethod(name).invoke(cls.newInstance());
System.out.println("FAILED - ICCE not thrown");
} catch (Throwable e) {
if (e instanceof InvocationTargetException &&
e.getCause() != null && e.getCause() instanceof IncompatibleClassChangeError) {
System.out.println("PASSED - expected ICCE thrown");
success++;
continue;
}
}
}
if (success != 4) throw new Exception("Failed to catch ICCE");
}
}