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/CharArrayReader/Constructor.java
+++ b/test/jdk/java/io/CharArrayReader/Constructor.java
@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 1998, 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 4140445 4140451
+   @summary Test if constructor will check for illegal
+            arguments.
+*/
+
+
+
+import java.io.*;
+
+public class Constructor {
+    public static void main(String argv[]) throws Exception {
+        int values[] = {Integer.MIN_VALUE, -1, 0, 1, 4, 16, 31,
+                        32, 33, Integer.MAX_VALUE};
+        char b[][] = {null, new char[32]};
+
+        int i = 0, j = 0, k = 0;
+        boolean nullPtr = false, indexOutBnd = false;
+
+        for (i = 0; i < b.length; i++) {
+            for ( j = 0; j < values.length; j++) {
+                for ( k = 0; k < values.length; k++) {
+
+                    nullPtr = (b[i] == null);
+
+                    int bufLen = nullPtr ? 0 : b[i].length;
+                    indexOutBnd = (values[j] < 0)
+                        || (values[j] > bufLen)
+                        || (values[k] < 0)
+                        || ((values[j] + values[k]) < 0);
+
+                    try {
+                        CharArrayReader rdr = new CharArrayReader
+                            (b[i], values[j], values[k]);
+                    } catch (NullPointerException e) {
+                        if (!nullPtr) {
+                            throw new Exception
+                                ("should not throw NullPointerException");
+                        }
+                        continue;
+                    } catch (IllegalArgumentException e) {
+                        if (!indexOutBnd) {
+                            throw new Exception
+                                ("should not throw IllegalArgumentException");
+                        }
+                        continue;
+                    }
+
+                    if (nullPtr || indexOutBnd) {
+                        throw new Exception("Failed to detect illegal argument");
+                    }
+                }
+            }
+        }
+    }
+}