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/jdk/java/lang/reflect/Method/invoke/TestPrivateInterfaceMethodReflect.java
+++ b/test/jdk/java/lang/reflect/Method/invoke/TestPrivateInterfaceMethodReflect.java
@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2013, 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
+ * @bug 8026213
+ * @summary Reflection support for private methods in interfaces
+ * @author  Robert Field
+ * @run main TestPrivateInterfaceMethodReflect
+ */
+
+import java.lang.classfile.ClassFile;
+import java.lang.constant.ClassDesc;
+import java.lang.constant.MethodTypeDesc;
+import java.lang.reflect.*;
+
+import static java.lang.classfile.ClassFile.ACC_PRIVATE;
+import static java.lang.classfile.ClassFile.ACC_PUBLIC;
+import static java.lang.constant.ConstantDescs.CD_Object;
+import static java.lang.constant.ConstantDescs.CD_int;
+import static java.lang.constant.ConstantDescs.INIT_NAME;
+import static java.lang.constant.ConstantDescs.MTD_void;
+
+public class TestPrivateInterfaceMethodReflect {
+
+    static final String INTERFACE_NAME = "PrivateInterfaceMethodReflectTest_Interface";
+    static final String CLASS_NAME = "PrivateInterfaceMethodReflectTest_Class";
+    static final int EXPECTED = 1234;
+
+    static class TestClassLoader extends ClassLoader {
+
+        @Override
+        public Class<?> findClass(String name) throws ClassNotFoundException {
+            byte[] b;
+            try {
+                b = loadClassData(name);
+            } catch (Throwable th) {
+                // th.printStackTrace();
+                throw new ClassNotFoundException("Loading error", th);
+            }
+            return defineClass(name, b, 0, b.length);
+        }
+
+        private byte[] loadClassData(String name) {
+            return switch (name) {
+                case INTERFACE_NAME -> ClassFile.of().build(ClassDesc.ofInternalName(INTERFACE_NAME), clb -> {
+                    clb.withFlags(AccessFlag.ABSTRACT, AccessFlag.INTERFACE, AccessFlag.PUBLIC);
+                    clb.withSuperclass(CD_Object);
+                    clb.withMethodBody("privInstance", MethodTypeDesc.of(CD_int), ACC_PRIVATE, cob -> {
+                        cob.loadConstant(EXPECTED);
+                        cob.ireturn();
+                    });
+                });
+                case CLASS_NAME -> ClassFile.of().build(ClassDesc.of(CLASS_NAME), clb -> {
+                    clb.withFlags(AccessFlag.PUBLIC);
+                    clb.withSuperclass(CD_Object);
+                    clb.withInterfaceSymbols(ClassDesc.ofInternalName(INTERFACE_NAME));
+                    clb.withMethodBody(INIT_NAME, MTD_void, ACC_PUBLIC, cob -> {
+                        cob.aload(0);
+                        cob.invokespecial(CD_Object, INIT_NAME, MTD_void);
+                        cob.return_();
+                    });
+                });
+                default -> throw new IllegalArgumentException();
+            };
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        TestClassLoader tcl = new TestClassLoader();
+        Class<?> itf = tcl.loadClass(INTERFACE_NAME);
+        Class<?> k = tcl.loadClass(CLASS_NAME);
+        Object inst = k.getDeclaredConstructor().newInstance();
+        Method[] meths = itf.getDeclaredMethods();
+        if (meths.length != 1) {
+            throw new Exception("Expected one method in " + INTERFACE_NAME + " instead " + meths.length);
+        }
+
+        Method m = meths[0];
+        int mod = m.getModifiers();
+        if ((mod & Modifier.PRIVATE) == 0) {
+            throw new Exception("Expected " + m + " to be private");
+        }
+        if ((mod & Modifier.STATIC) != 0) {
+            throw new Exception("Expected " + m + " to be instance method");
+        }
+
+        m.setAccessible(true);
+        for (int i = 1; i < 200; i++) {
+            if (!m.invoke(inst).equals(EXPECTED)) {
+                throw new Exception("Expected " + EXPECTED + " from " + m);
+            }
+        }
+
+        System.out.println("Passed.");
+    }
+}