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/util/ServiceLoader/ReloadTest.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+/*
+ * @test
+ * @modules java.scripting
+ * @library modules classpath/pearscript
+ * @build ReloadTest org.pear.PearScript org.pear.PearScriptEngineFactory bananascript/*
+ * @run junit/othervm ReloadTest
+ * @summary Basic test of ServiceLoader.reload
+ */
+
+import java.util.ConcurrentModificationException;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ServiceLoader;
+import java.util.ServiceLoader.Provider;
+import java.util.Spliterator;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import static java.util.ServiceLoader.*;
+import javax.script.ScriptEngineFactory;
+
+import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+public class ReloadTest {
+
+    @Test
+    public void testReload() {
+        ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class);
+        List<String> names1 = sl.stream()
+                .map(Provider::get)
+                .map(ScriptEngineFactory::getEngineName)
+                .collect(Collectors.toList());
+        assertFalse(names1.isEmpty());
+        sl.reload();
+        List<String> names2 = sl.stream()
+                .map(Provider::get)
+                .map(ScriptEngineFactory::getEngineName)
+                .collect(Collectors.toList());
+        assertEquals(names2, names1);
+    }
+
+    @Test
+    public void testIteratorHasNext() {
+        ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class);
+        Iterator<ScriptEngineFactory> iterator = sl.iterator();
+        sl.reload();
+        Assertions.assertThrows(ConcurrentModificationException.class, iterator::hasNext);
+    }
+
+    @Test
+    public void testIteratorNext() {
+        ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class);
+        Iterator<ScriptEngineFactory> iterator = sl.iterator();
+        assertTrue(iterator.hasNext());
+        sl.reload();
+        Assertions.assertThrows(ConcurrentModificationException.class, iterator::next);
+    }
+
+    @Test
+    public void testStreamFindAny() {
+        ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class);
+        Stream<Provider<ScriptEngineFactory>> stream = sl.stream();
+        sl.reload();
+        Assertions.assertThrows(ConcurrentModificationException.class, stream::findAny);
+    }
+
+    @Test
+    public void testSpliteratorTryAdvance() {
+        ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class);
+        Stream<Provider<ScriptEngineFactory>> stream = sl.stream();
+        Spliterator<Provider<ScriptEngineFactory>> spliterator = stream.spliterator();
+        sl.reload();
+        Assertions.assertThrows(ConcurrentModificationException.class,
+                () -> spliterator.tryAdvance(System.out::println));
+    }
+
+}