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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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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.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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110
test/hotspot/jtreg/compiler/vectorapi/TestVectorSpilling.java Normal file
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/*
* Copyright (c) 2025 SAP SE. 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.
*
*/
package compiler.vectorapi;
import compiler.lib.ir_framework.*;
import jdk.incubator.vector.IntVector;
import jdk.incubator.vector.VectorSpecies;
import jdk.test.lib.Asserts;
/**
* @test
* @bug 8370473
* @library /test/lib /
* @summary Test alignment of vector spill slots. It should match the vector size.
* @modules jdk.incubator.vector
* @requires vm.opt.final.MaxVectorSize == null | vm.opt.final.MaxVectorSize >= 16
*
* @run driver compiler.vectorapi.TestVectorSpilling
*/
public class TestVectorSpilling {
private static final VectorSpecies<Integer> I_SPECIES = IntVector.SPECIES_128;
private static int LENGTH = 1024;
private static int[] ia1;
private static int[] ia2;
private static int[] ir ;
public static void main(String[] args) {
TestFramework.runWithFlags("--add-modules=jdk.incubator.vector");
}
static class LData {
// Rading from a volatile field prevents cse optimization
static volatile long vF = 1042;
long l1, l2, l3, l4, l5, l6, l7, l8;
public LData() {
l1 = vF; l2 = vF; l3 = vF; l4 = vF; l5 = vF; l6 = vF; l7 = vF; l8 = vF;
}
public long sum() {
return l1 + l2 + l3 + l4 + l5 + l6 + l7 + l8;
}
}
@Run(test = "test16ByteSpilling")
static void test16ByteSpilling_runner() {
test16ByteSpilling(1, 2, 3, 4, 5, 6, 7, 8, 9);
}
@Test
@IR(counts = {IRNode.MEM_TO_REG_SPILL_COPY_TYPE, "vectorx", "> 0"},
phase = {CompilePhase.FINAL_CODE},
applyIfCPUFeature= {"rvv", "false"})
static long test16ByteSpilling(long l1, long l2, long l3, long l4, long l5, long l6, long l7, long l8,
long l9 /* odd stack arg */) {
// To be scalar replaced and spilled to stack
LData d1 = new LData();
LData d2 = new LData();
LData d3 = new LData();
for (int i = 0; i < LENGTH; i += I_SPECIES.length()) {
IntVector a1v = IntVector.fromArray(I_SPECIES, ia1, i);
IntVector a2v = IntVector.fromArray(I_SPECIES, ia2, i);
int scalar = spillPoint();
a1v.add(a2v)
.add(scalar).intoArray(ir, i);
}
return l1 + l2 + l3 + l4 + l5 + l6 + l7 + l8 + l9 + d1.sum() + d2.sum() + d3.sum();
}
@DontInline
static int spillPoint() {
return 42;
}
static {
ia1 = new int[LENGTH];
ia2 = new int[LENGTH];
ir = new int[LENGTH];
}
}