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/nio/channels/Selector/OpRead.java
+++ b/test/jdk/java/nio/channels/Selector/OpRead.java
@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2002, 2012, 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 4755720
+ * @summary Test if OP_READ is detected with OP_WRITE in interestOps
+ */
+
+import java.net.*;
+import java.nio.*;
+import java.nio.channels.*;
+import java.util.*;
+
+public class OpRead {
+
+    static void test() throws Exception {
+        ServerSocketChannel ssc = null;
+        SocketChannel sc = null;
+        SocketChannel peer = null;
+        try {
+            ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0));
+
+            // loopback connection
+            InetAddress lh = InetAddress.getLocalHost();
+            sc = SocketChannel.open(new InetSocketAddress(lh, ssc.socket().getLocalPort()));
+            peer = ssc.accept();
+
+            // peer sends message so that "sc" will be readable
+            int n = peer.write(ByteBuffer.wrap("Hello".getBytes()));
+            assert n > 0;
+
+            sc.configureBlocking(false);
+
+            Selector selector = Selector.open();
+            SelectionKey key = sc.register(selector, SelectionKey.OP_READ |
+                SelectionKey.OP_WRITE);
+
+            boolean done = false;
+            int failCount = 0;
+            while (!done) {
+                int nSelected = selector.select();
+                if (nSelected > 0) {
+                    if (nSelected > 1)
+                        throw new RuntimeException("More than one channel selected");
+                    Set<SelectionKey> keys = selector.selectedKeys();
+                    Iterator<SelectionKey> iterator = keys.iterator();
+                    while (iterator.hasNext()) {
+                        key = iterator.next();
+                        iterator.remove();
+                        if (key.isWritable()) {
+                            failCount++;
+                            if (failCount > 10)
+                                throw new RuntimeException("Test failed");
+                            Thread.sleep(250);
+                        }
+                        if (key.isReadable()) {
+                            done = true;
+                        }
+                    }
+                }
+            }
+        } finally {
+            if (peer != null) peer.close();
+            if (sc != null) sc.close();
+            if (ssc != null) ssc.close();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        test();
+    }
+
+}