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/sun/tools/jstack/BasicJStackTest.java
+++ b/test/jdk/sun/tools/jstack/BasicJStackTest.java
@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2005, 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.util.Arrays;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+import jdk.test.lib.Utils;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.JDKToolLauncher;
+
+import jtreg.SkippedException;
+
+/*
+ * @test
+ * @bug 8273187 8308033
+ * @summary Unit test for jstack utility
+ * @library /test/lib
+ * @run main BasicJStackTest
+ */
+public class BasicJStackTest {
+
+    private static ProcessBuilder processBuilder = new ProcessBuilder();
+
+    public static void main(String[] args) throws Exception {
+        if (Thread.currentThread().isVirtual()) {
+            // This test runs jstack against the current process and then asserts the
+            // presence of current thread in the stacktraces. We skip this test
+            // when the current thread is a virtual thread since "jstack" command doesn't
+            // print the stacktraces of virtual threads.
+            throw new SkippedException("skipping test since current thread is a virtual thread");
+        }
+        testJstackNoArgs();
+        testJstack_l();
+        testJstackUTF8Encoding();
+    }
+
+    private static void testJstackNoArgs() throws Exception {
+        String marker = "testJstackNoArgs";
+        OutputAnalyzer output = jstack(marker);
+        output.shouldHaveExitValue(0);
+        output.shouldContain(marker);
+    }
+
+    private static void testJstack_l() throws Exception {
+        String marker = "testJstack_l";
+        OutputAnalyzer output = jstack(marker, "-l");
+        output.shouldHaveExitValue(0);
+        output.shouldContain(marker);
+    }
+
+    private static void testJstackUTF8Encoding() throws Exception {
+        String marker = "markerName" + "\u00e4\u0bb5".repeat(60);
+        OutputAnalyzer output = jstack(marker);
+        output.shouldHaveExitValue(0);
+        output.shouldContain(marker);
+    }
+
+    private static OutputAnalyzer jstack(String marker, String... toolArgs) throws Exception {
+        Charset cs = StandardCharsets.UTF_8;
+        Thread.currentThread().setName(marker);
+        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
+        launcher.addVMArgs(Utils.getFilteredTestJavaOpts("-XX:+UsePerfData"));
+        launcher.addVMArg("-XX:+UsePerfData");
+        launcher.addVMArg("-Dfile.encoding=" + cs);
+        launcher.addVMArg("-Dsun.stdout.encoding=" + cs);
+        // jstack output may be lengthy, disable output streaming to avoid deadlocks
+        launcher.addVMArg("-Djdk.attach.allowStreamingOutput=false");
+        if (toolArgs != null) {
+            for (String toolArg : toolArgs) {
+                launcher.addToolArg(toolArg);
+            }
+        }
+        launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
+
+        processBuilder.command(launcher.getCommand());
+        System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
+        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder, null, cs);
+        System.out.println(output.getOutput());
+
+        return output;
+    }
+
+}