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/io/charStreams/LineNumbers.java
+++ b/test/jdk/java/io/charStreams/LineNumbers.java
@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1997, 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 Stochastic test of LineNumberReader
+ */
+
+import java.io.*;
+
+
+public class LineNumbers {
+
+    static String enc = "UTF8";
+    static String inEnc;
+    static String outEnc;
+    static int limit = 500;
+
+    public static void main(String[] args) throws Exception {
+        PrintWriter log
+            = new PrintWriter(new OutputStreamWriter(System.err), true);
+
+        if (inEnc == null)
+            inEnc = enc;
+        if (outEnc == null)
+            outEnc = enc;
+
+        PipedOutputStream co = new PipedOutputStream();
+        PipedInputStream ci = new PipedInputStream(co);
+
+        BufferedWriter w = new BufferedWriter(new OutputStreamWriter(co, outEnc));
+        LineNumberReader r = new LineNumberReader(new InputStreamReader(ci, inEnc));
+
+        Thread t1 = new Thread(new RandomLineSource(w, limit));
+        Thread t2 = new Thread(new LineNumberSink(r, limit, log));
+        t1.start();
+        t2.start();
+        t1.join();
+        t2.join();
+    }
+
+}
+
+
+class LineNumberSink implements Runnable {
+
+    LineNumberReader r;
+    int limit;
+    PrintWriter log;
+
+    LineNumberSink(LineNumberReader r, int limit, PrintWriter log) {
+        this.r = r;
+        this.limit = limit;
+        this.log = log;
+    }
+
+    public void run() {
+        String s;
+        int n = 0;
+
+        try {
+            while ((s = r.readLine()) != null) {
+                n++;
+                int ln = r.getLineNumber();
+                log.println("[" + ln + "] " + s.length());
+                log.println(s);
+                if (log.checkError())
+                    log.println("Conversion errors"); /* #### */
+                if (n != ln)
+                    throw new RuntimeException("Line number mismatch: Expected " + n + ", got " + ln);
+            }
+            if (n != limit)
+                throw new RuntimeException("Incorrect line count");
+        }
+        catch (IOException x) {
+            throw new RuntimeException(x.toString());
+        }
+        log.println(n + " lines read");
+    }
+
+}