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/invoke/MethodHandles/ensureInitialized/Main.java
+++ b/test/jdk/java/lang/invoke/MethodHandles/ensureInitialized/Main.java
@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2020, 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.
+ */
+
+import java.lang.invoke.MethodHandles;
+import java.lang.reflect.Method;
+
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @test
+ * @bug 8235521
+ * @summary Tests for Lookup::ensureClassInitialized
+ * @build java.base/* m1/* m2/* Main
+ * @run junit/othervm --add-modules m1 Main
+ */
+
+public class Main {
+    // Test access to public java.lang class
+    @Test
+    public void testPublic() throws Exception {
+        assertFalse(Helper.isInitialized(PublicInit.class));
+        MethodHandles.lookup().ensureInitialized(PublicInit.class);
+        assertTrue(Helper.isInitialized(PublicInit.class));
+        // no-op if already initialized
+        MethodHandles.lookup().ensureInitialized(PublicInit.class);
+    }
+
+    // access denied to package-private java.lang class
+    @Test
+    public void testPackagePrivate() throws Exception {
+        Class<?> c = Class.forName("java.lang.DefaultInit", false, null);
+        assertFalse(Helper.isInitialized(c));
+        // access denied
+        assertThrows(IllegalAccessException.class, () -> MethodHandles.lookup().ensureInitialized(c));
+    }
+
+    // access denied to public class in a non-exported package
+    @Test
+    public void testNonExportedPackage() throws Exception {
+        Class<?> c = Class.forName("jdk.internal.misc.VM", false, null);
+        // access denied
+        assertThrows(IllegalAccessException.class, () -> MethodHandles.lookup().ensureInitialized(c));
+    }
+
+    // invoke p1.Test::test to test module boundary access
+    @Test
+    public void testModuleAccess() throws Exception {
+        Class<?> c = Class.forName("p1.Test");
+        Method m = c.getMethod("test");
+        m.invoke(null);
+    }
+
+    @Test
+    public void testArrayType() throws Exception {
+        Class<?> arrayType = PublicInit.class.arrayType();
+        assertThrows(IllegalArgumentException.class, () -> MethodHandles.lookup().ensureInitialized(arrayType));
+    }
+}