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/rangechecks/TestRangeCheckHoistingScaledIV.java
+++ b/test/hotspot/jtreg/compiler/rangechecks/TestRangeCheckHoistingScaledIV.java
@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2022, 2023, Arm Limited. All rights reserved.
+ * Copyright (c) 2025, Rivos 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
+ * @bug 8289996
+ * @summary Test range check hoisting for some scaled iv at array index
+ * @library /test/lib /
+ * @requires vm.flagless
+ * @requires vm.debug & vm.compiler2.enabled
+ * @requires os.simpleArch == "x64" | os.arch == "aarch64" | (os.arch == "riscv64" & vm.cpu.features ~= ".*rvv.*")
+ * @modules jdk.incubator.vector
+ * @run main/othervm compiler.rangechecks.TestRangeCheckHoistingScaledIV
+ */
+
+package compiler.rangechecks;
+
+import java.lang.foreign.MemorySegment;
+import java.nio.ByteOrder;
+
+import jdk.incubator.vector.ByteVector;
+import jdk.incubator.vector.VectorSpecies;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class TestRangeCheckHoistingScaledIV {
+
+    // Inner class for test loops
+    class Launcher {
+        private static final int SIZE = 16000;
+        private static final VectorSpecies<Byte> SPECIES = ByteVector.SPECIES_64;
+        private static final ByteOrder ORDER = ByteOrder.nativeOrder();
+
+        private static byte[] ta = new byte[SIZE];
+        private static byte[] tb = new byte[SIZE];
+
+        private static MemorySegment sa = MemorySegment.ofArray(ta);
+        private static MemorySegment sb = MemorySegment.ofArray(tb);
+
+        private static int count = 789;
+
+        // Normal array accesses with int range checks
+        public static void scaledIntIV() {
+            for (int i = 0; i < count; i += 2) {
+                tb[7 * i] = ta[3 * i];
+            }
+        }
+
+        // Memory segment accesses with long range checks
+        public static void scaledLongIV() {
+            for (long l = 0; l < count; l += 64) {
+                ByteVector v = ByteVector.fromMemorySegment(SPECIES, sa, l * 6, ORDER);
+                v.intoMemorySegment(sb, l * 15, ORDER);
+            }
+        }
+
+        public static void main(String[] args) {
+            for (int i = 0; i < 20000; i++) {
+                scaledIntIV();
+                scaledLongIV();
+            }
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(
+                "--add-modules", "jdk.incubator.vector",
+                "-Xbatch", "-XX:+TraceLoopPredicate", Launcher.class.getName());
+        OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
+        analyzer.shouldHaveExitValue(0);
+        analyzer.outputTo(System.out);
+
+        // Check if int range checks are hoisted
+        analyzer.stdoutShouldContain("rc_predicate init * 3");
+        analyzer.stdoutShouldContain("rc_predicate init * 7");
+
+        // Check if long range checks are hoisted
+        analyzer.stdoutShouldContain("rc_predicate init * 6");
+        analyzer.stdoutShouldContain("rc_predicate init * 15");
+    }
+}