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/hotspot/jtreg/runtime/cds/appcds/jigsaw/PatchModule/PatchJavaBase.java
+++ b/test/hotspot/jtreg/runtime/cds/appcds/jigsaw/PatchModule/PatchJavaBase.java
@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2016, 2021, 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
+ * @requires vm.cds
+ * @summary sharing is disabled if java.base is patch at runtime
+ * @library ../..
+ * @library /test/hotspot/jtreg/testlibrary
+ * @library /test/lib
+ * @build PatchMain
+ * @run driver PatchJavaBase
+ */
+
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.helpers.ClassFileInstaller;
+
+public class PatchJavaBase {
+    private static String moduleJar;
+
+    public static void main(String args[]) throws Throwable {
+
+        String source = "package java.lang; "                       +
+                        "public class NewClass { "                  +
+                        "    static { "                             +
+                        "        System.out.println(\"I pass!\"); " +
+                        "    } "                                    +
+                        "}";
+
+        ClassFileInstaller.writeClassToDisk("java/lang/NewClass",
+             InMemoryJavaCompiler.compile("java.lang.NewClass", source, "--patch-module=java.base"),
+             System.getProperty("test.classes"));
+
+        JarBuilder.build("javabase", "java/lang/NewClass");
+        moduleJar = TestCommon.getTestJar("javabase.jar");
+
+        System.out.println("Test dumping with --patch-module");
+        String runError = "Unable to use shared archive: CDS is disabled when java.base module is patched";
+        String dumpingError = "Cannot use the following option when dumping the shared archive: --patch-module";
+        String errMsg;
+        if (TestCommon.isDynamicArchive()) {
+            errMsg = runError;
+        } else {
+            errMsg = dumpingError;
+        }
+        OutputAnalyzer output =
+            TestCommon.dump(null, null,
+                "--patch-module=java.base=" + moduleJar,
+                "PatchMain", "java.lang.NewClass");
+        output.shouldHaveExitValue(1)
+              .shouldContain(errMsg);
+
+        TestCommon.run(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "--patch-module=java.base=" + moduleJar,
+            "PatchMain", "java.lang.NewClass")
+          .assertAbnormalExit(runError);
+    }
+}