undefect. CWE-407 — 63 sites patched across 27 ecosystems

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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/micro/org/openjdk/bench/jdk/classfile/CodeAttributeTools.java
+++ b/test/micro/org/openjdk/bench/jdk/classfile/CodeAttributeTools.java
@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2022, 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.
+ */
+package org.openjdk.bench.jdk.classfile;
+
+import java.io.IOException;
+import java.lang.classfile.Attributes;
+import java.lang.constant.ClassDesc;
+import java.net.URI;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.List;
+import java.lang.classfile.ClassFile;
+import java.lang.classfile.ClassReader;
+import java.lang.classfile.constantpool.ConstantPoolBuilder;
+import java.lang.constant.MethodTypeDesc;
+import jdk.internal.classfile.impl.AbstractPseudoInstruction;
+import jdk.internal.classfile.impl.LabelContext;
+import jdk.internal.classfile.impl.ClassFileImpl;
+import jdk.internal.classfile.impl.RawBytecodeHelper;
+import jdk.internal.classfile.impl.SplitConstantPool;
+import jdk.internal.classfile.impl.StackCounter;
+import jdk.internal.classfile.impl.StackMapGenerator;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Level;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.infra.Blackhole;
+
+@BenchmarkMode(Mode.Throughput)
+@State(Scope.Benchmark)
+@Fork(value = 1, jvmArgs = {
+        "--add-exports", "java.base/jdk.internal.classfile.impl=ALL-UNNAMED"})
+@Warmup(iterations = 2)
+@Measurement(iterations = 8)
+public class CodeAttributeTools {
+
+    record GenData(LabelContext labelContext,
+                    ClassDesc thisClass,
+                    String methodName,
+                    MethodTypeDesc methodDesc,
+                    boolean isStatic,
+                    RawBytecodeHelper.CodeRange bytecode,
+                    ConstantPoolBuilder constantPool,
+                    List<AbstractPseudoInstruction.ExceptionCatchImpl> handlers) {}
+
+    List<GenData> data;
+
+    @Setup(Level.Invocation)
+    public void setup() throws IOException {
+        data = new ArrayList<>();
+        Files.walk(FileSystems.getFileSystem(URI.create("jrt:/")).getPath("modules/java.base/java")).forEach(p ->  {
+            if (Files.isRegularFile(p) && p.toString().endsWith(".class")) try {
+                var clm = ClassFile.of().parse(p);
+                var thisCls = clm.thisClass().asSymbol();
+                var cp = new SplitConstantPool((ClassReader)clm.constantPool());
+                for (var m : clm.methods()) {
+                    m.findAttribute(Attributes.code()).ifPresent(com -> {
+                        data.add(new GenData(
+                                (LabelContext)com,
+                                thisCls,
+                                m.methodName().stringValue(),
+                                m.methodTypeSymbol(),
+                                (m.flags().flagsMask() & ClassFile.ACC_STATIC) != 0,
+                                RawBytecodeHelper.of(com.codeArray()),
+                                cp,
+                                com.exceptionHandlers().stream().map(eh -> (AbstractPseudoInstruction.ExceptionCatchImpl)eh).toList()));
+                    });
+                }
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        });
+    }
+
+    @Benchmark
+    public void benchmarkStackMapsGenerator(Blackhole bh) {
+        for (var d : data) bh.consume(new StackMapGenerator(
+                d.labelContext(),
+                d.thisClass(),
+                d.methodName(),
+                d.methodDesc(),
+                d.isStatic(),
+                d.bytecode(),
+                (SplitConstantPool)d.constantPool(),
+                (ClassFileImpl)ClassFile.of(),
+                d.handlers()));
+    }
+
+    @Benchmark
+    public void benchmarkStackCounter(Blackhole bh) {
+        for (var d : data) bh.consume(new StackCounter(
+                d.labelContext(),
+                null,
+                d.thisClass(),
+                d.methodName(),
+                d.methodDesc(),
+                d.isStatic(),
+                d.bytecode(),
+                (SplitConstantPool)d.constantPool(),
+                d.handlers()));
+    }
+}