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/langtools/jdk/jshell/PipeInputStreamTest.java
+++ b/test/langtools/jdk/jshell/PipeInputStreamTest.java
@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2016, 2025, 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 8167461
+ * @summary Verify PipeInputStream works.
+ * @modules jdk.compiler/com.sun.tools.javac.util
+ *          jdk.jshell/jdk.jshell.execution.impl:open
+ * @run junit PipeInputStreamTest
+ */
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+
+
+import com.sun.tools.javac.util.Pair;
+
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+public class PipeInputStreamTest {
+
+    @Test
+    public void testReadArrayNotBlocking() throws Exception {
+        Pair<InputStream, OutputStream> streams = createPipeStream();
+        InputStream in = streams.fst;
+        OutputStream out = streams.snd;
+        out.write('a');
+        byte[] data = new byte[12];
+        assertEquals(1, in.read(data));
+        assertEquals('a', data[0]);
+        out.write('a'); out.write('b'); out.write('c');
+        assertEquals(3, in.read(data));
+        assertEquals('a', data[0]);
+        assertEquals('b', data[1]);
+        assertEquals('c', data[2]);
+    }
+
+    private Pair<InputStream, OutputStream> createPipeStream() throws Exception {
+        Class<?> pipeStreamClass = Class.forName("jdk.jshell.execution.impl.PipeInputStream");
+        Constructor<?> c = pipeStreamClass.getDeclaredConstructor();
+        c.setAccessible(true);
+        Object pipeStream = c.newInstance();
+        Method createOutputStream = pipeStreamClass.getDeclaredMethod("createOutput");
+        createOutputStream.setAccessible(true);
+        return Pair.of((InputStream) pipeStream, (OutputStream) createOutputStream.invoke(pipeStream));
+    }
+
+}