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.

test/jdk/java/lang/ThreadLocal/Basic.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 1999, 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
+ * @summary Basic functional test of ThreadLocal
+ * @author Josh Bloch
+ */
+
+public class Basic {
+    static ThreadLocal n = new ThreadLocal() {
+        int i = 0;
+        protected synchronized Object initialValue() {
+            return new Integer(i++);
+        }
+    };
+
+    public static void main(String args[]) throws Exception {
+        int threadCount = 100;
+        Thread th[] = new Thread[threadCount];
+        final int x[] = new int[threadCount];
+
+        // Start the threads
+        for(int i=0; i<threadCount; i++) {
+            th[i] = new Thread() {
+                public void run() {
+                    int threadId = ((Integer)(n.get())).intValue();
+                    for (int j=0; j<threadId; j++) {
+                        x[threadId]++;
+                        Thread.currentThread().yield();
+                    }
+                }
+            };
+            th[i].start();
+        }
+
+        // Wait for the threads to finish
+        for(int i=0; i<threadCount; i++)
+            th[i].join();
+
+        // Check results
+        for(int i=0; i<threadCount; i++)
+            if (x[i] != i)
+                throw(new Exception("x[" + i + "] =" + x[i]));
+    }
+}