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/compiler/arguments/TestOptoLoopAlignment.java
+++ b/test/hotspot/jtreg/compiler/arguments/TestOptoLoopAlignment.java
@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2022, Red Hat, Inc. 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
+ * @library /test/lib /
+ * @bug 8281467
+ * @requires vm.flagless
+ * @requires os.arch=="amd64" | os.arch=="x86_64"
+ *
+ * @summary Test large OptoLoopAlignments are accepted
+ * @run driver compiler.arguments.TestOptoLoopAlignment
+ */
+
+package compiler.arguments;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Arrays;
+import java.util.ArrayList;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class TestOptoLoopAlignment {
+
+    public static void main(String[] args) throws IOException {
+        if (args.length == 0) {
+            driver();
+        } else {
+            System.out.println("Pass");
+        }
+    }
+
+    private static final String MSG = "must be less or equal to CodeEntryAlignment";
+
+    private static List<String> cmdline(String[] args) {
+        List<String> r = new ArrayList();
+        r.addAll(Arrays.asList(args));
+        r.add("compiler.arguments.TestOptoLoopAlignment");
+        r.add("run");
+        return r;
+    }
+
+    public static void shouldFail(String... args) throws IOException {
+        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(cmdline(args));
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldNotHaveExitValue(0);
+        output.shouldContain(MSG);
+    }
+
+    public static void shouldPass(String... args) throws IOException {
+        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(cmdline(args));
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldHaveExitValue(0);
+        output.shouldNotContain(MSG);
+    }
+
+    public static void driver() throws IOException {
+        for (int align = 1; align < 64; align *= 2) {
+            shouldPass(
+                "-XX:OptoLoopAlignment=" + align
+            );
+        }
+        for (int align = 64; align <= 128; align *= 2) {
+            shouldFail(
+                "-XX:OptoLoopAlignment=" + align
+            );
+        }
+    }
+
+}