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/Throwable/TestMaxJavaStackTraceDepth.java
+++ b/test/hotspot/jtreg/runtime/Throwable/TestMaxJavaStackTraceDepth.java
@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2018, 2023, 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
+ * @bug 7179701
+ * @summary MaxJavaStackTraceDepth of zero is not handled correctly/consistently in the VM
+ * @requires vm.flagless
+ * @modules java.base/jdk.internal.misc:open
+ * @modules java.base/java.lang:open
+ * @library /test/lib
+ * @run driver TestMaxJavaStackTraceDepth runTest
+ */
+
+import java.lang.reflect.Field;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+
+public class TestMaxJavaStackTraceDepth {
+
+  static final int maxDepth = 2010;
+
+  // Inner class that throws a lot of exceptions
+  static class Thrower {
+    int count = 0;
+
+    int getDepth(Throwable t) throws Exception {
+      Field f = Throwable.class.getDeclaredField("depth");
+      f.setAccessible(true); // it's private
+      return f.getInt(t);
+    }
+
+    void callThrow() throws Exception {
+      if (++count < maxDepth) {
+        callThrow();
+      } else {
+        throw new RuntimeException("depth tested " + maxDepth);
+      }
+    }
+
+    void testThrow() throws Exception {
+      try {
+        count = getDepth(new Throwable()); // count stack to this point.
+        callThrow();
+      } catch(Exception e) {
+        e.getStackTrace();
+        System.out.println(e.getMessage());
+        int throwableDepth = getDepth(e);
+        System.out.println("java.lang.RuntimeException, " + throwableDepth);
+      }
+    }
+  }
+
+  public static void main(String args[]) throws Exception {
+    if (args.length > 0) {
+      // Test values of MaxJavaStackTraceDepth
+      int[] depths = {0, 20, 1024};
+      for (int d : depths) {
+        System.out.println("running test with -XX:MaxJavaStackTraceDepth=" + d);
+        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:stacktrace=info",
+                                                                             "-XX:MaxJavaStackTraceDepth=" + d,
+                                                                             "--add-opens",
+                                                                             "java.base/java.lang=ALL-UNNAMED",
+                                                                             "TestMaxJavaStackTraceDepth");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        if (d == 0) {
+          // Should get all the elements in stack trace
+          output.shouldContain("java.lang.RuntimeException, " + maxDepth);
+        } else {
+          output.shouldContain("java.lang.RuntimeException, " + d);
+        }
+        output.shouldHaveExitValue(0);
+      }
+    } else {
+      // run the test
+      Thrower t = new Thrower();
+      t.testThrow();
+    }
+  }
+}