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/net/httpclient/HttpClientExceptionTest.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2020, 2026, 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.io.IOException;
+import java.net.ProtocolFamily;
+import java.net.http.HttpClient;
+import java.nio.channels.DatagramChannel;
+import java.nio.channels.Pipe;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+import java.nio.channels.Channel;
+import java.nio.channels.spi.AbstractSelector;
+import java.nio.channels.spi.SelectorProvider;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/*
+ * @test
+ * @bug 8248006
+ * @summary The test checks if UncheckedIOException is thrown
+ * @build  HttpClientExceptionTest
+ * @run junit/othervm -Djava.nio.channels.spi.SelectorProvider=HttpClientExceptionTest$CustomSelectorProvider
+ *                      HttpClientExceptionTest
+ */
+
+public class HttpClientExceptionTest {
+
+    static final int ITERATIONS = 10;
+
+    @Test
+    public void testHttpClientException() {
+        for(int i = 0; i < ITERATIONS; i++) {
+            Assertions.assertThrows(Throwable.class, HttpClient.newBuilder()::build);
+            Assertions.assertThrows(Throwable.class, HttpClient::newHttpClient);
+        }
+    }
+
+    public static class CustomSelectorProvider extends SelectorProvider {
+
+        @Override
+        public DatagramChannel openDatagramChannel() throws IOException {
+            throw new IOException();
+        }
+
+        @Override
+        public DatagramChannel openDatagramChannel(ProtocolFamily family) throws IOException {
+            throw new IOException();
+        }
+
+        @Override
+        public Pipe openPipe() throws IOException {
+            throw new IOException();
+        }
+
+        @Override
+        public ServerSocketChannel openServerSocketChannel() throws IOException {
+            throw new IOException();
+        }
+
+        @Override
+        public SocketChannel openSocketChannel() throws IOException {
+            throw new IOException();
+        }
+
+        @Override
+        public Channel inheritedChannel() throws IOException {
+            return super.inheritedChannel();
+        }
+
+        @Override
+        public SocketChannel openSocketChannel(ProtocolFamily family) throws IOException {
+            return super.openSocketChannel(family);
+        }
+
+        @Override
+        public ServerSocketChannel openServerSocketChannel(ProtocolFamily family) throws IOException {
+            return super.openServerSocketChannel(family);
+        }
+
+        @Override
+        public AbstractSelector openSelector() throws IOException {
+            throw new IOException();
+        }
+    }
+}