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/lang/ClassLoader/loadLibraryUnload/LoadLibraryUnloadTest.java
+++ b/test/jdk/java/lang/ClassLoader/loadLibraryUnload/LoadLibraryUnloadTest.java
@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, BELLSOFT. 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.
+ */
+
+/*
+ * LoadLibraryUnloadTest ensures all objects (NativeLibrary) are deallocated
+ * when loaded in concurrent mode.
+ */
+/*
+ * @test
+ * @bug 8266310 8289919 8293282
+ * @summary Checks that JNI_OnLoad is invoked only once when multiple threads
+ *          call System.loadLibrary concurrently, and JNI_OnUnload is invoked
+ *          when the native library is loaded from a custom class loader.
+ * @library /test/lib
+ * @build LoadLibraryUnload p.Class1
+ * @run main/othervm/native LoadLibraryUnloadTest
+ */
+
+import jdk.test.lib.Asserts;
+import jdk.test.lib.process.OutputAnalyzer;
+
+import static jdk.test.lib.process.ProcessTools.*;
+
+public class LoadLibraryUnloadTest {
+
+    private static String testClassPath = System.getProperty("test.classes");
+    private static String testLibraryPath = System.getProperty("test.nativepath");
+
+    private final static long countLines(OutputAnalyzer output, String string) {
+        return output.asLines()
+                     .stream()
+                     .filter(s -> s.contains(string))
+                     .count();
+    }
+
+    private final static void dump(OutputAnalyzer output) {
+        output.asLines()
+              .stream()
+              .forEach(s -> System.out.println(s));
+    }
+
+    public static void main(String[] args) throws Throwable {
+
+        OutputAnalyzer outputAnalyzer = executeCommand(createTestJavaProcessBuilder(
+                "-Dtest.classes=" + testClassPath,
+                "-Djava.library.path=" + testLibraryPath,
+                "LoadLibraryUnload"));
+        dump(outputAnalyzer);
+
+        Asserts.assertTrue(
+                countLines(outputAnalyzer, "Native library loaded from Class1.") == 2,
+                "Native library expected to be loaded in 2 threads.");
+
+        long refCount = countLines(outputAnalyzer, "Native library loaded.");
+
+        Asserts.assertTrue(refCount > 0, "Failed to load native library.");
+
+        System.out.println("Native library loaded in " + refCount + " threads");
+
+        Asserts.assertTrue(refCount == 1, "Native library is loaded more than once.");
+
+        Asserts.assertTrue(
+                countLines(outputAnalyzer, "Native library unloaded.") == refCount,
+                "Failed to unload native library");
+
+        Asserts.assertEquals(0, outputAnalyzer.getExitValue(),
+                "LoadLibraryUnload exit value not zero");
+    }
+}