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/ClassLoader/deadlock/DelegatingLoader.java
+++ b/test/jdk/java/lang/ClassLoader/deadlock/DelegatingLoader.java
@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2009, 2017, 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.
+ */
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.locks.*;
+import java.lang.reflect.*;
+
+public class DelegatingLoader extends URLClassLoader {
+
+    private DelegatingLoader delLoader;
+    private String[] delClasses;
+
+    static {
+        boolean supportParallel = false;
+        try {
+            Class c = Class.forName("java.lang.ClassLoader");
+            Method m = c.getDeclaredMethod("registerAsParallelCapable",
+                    new Class[0]);
+            m.setAccessible(true);
+            Object result = (Boolean) m.invoke(null);
+            if (result instanceof Boolean) {
+                supportParallel = ((Boolean) result).booleanValue();
+            } else {
+                // Should never happen
+                System.out.println("Error: ClassLoader.registerAsParallelCapable() did not return a boolean!");
+                System.exit(1);
+            }
+        } catch (NoSuchMethodException nsme) {
+            System.out.println("No ClassLoader.registerAsParallelCapable() API");
+        } catch (NoSuchMethodError nsme2) {
+            System.out.println("No ClassLoader.registerAsParallelCapable() API");
+        } catch (Exception ex) {
+            ex.printStackTrace();
+            // Exit immediately to indicate an error
+            System.exit(1);
+        }
+        System.out.println("Parallel ClassLoader registration: " +
+                    supportParallel);
+    }
+
+    public DelegatingLoader(URL urls[]) {
+        super(urls);
+        System.out.println("DelegatingLoader using URL " + urls[0]);
+    }
+
+    public void setDelegate(String[] delClasses, DelegatingLoader delLoader) {
+        this.delClasses = delClasses;
+        this.delLoader = delLoader;
+    }
+
+    public Class loadClass(String className, boolean resolve)
+            throws ClassNotFoundException {
+        for (int i = 0; i < delClasses.length; i++) {
+            if (delClasses[i].equals(className)) {
+                DelegateTest.log("Delegating class loading for " + className);
+                try {
+                    Thread.sleep(500);
+                } catch (InterruptedException ie) {
+                    return null;
+                }
+                return delLoader.loadClass(className, resolve);
+            }
+        }
+
+        DelegateTest.log("Loading local class " + className);
+//        synchronized (getClassLoadingLock(className)) {
+            return super.loadClass(className, resolve);
+//        }
+    }
+}