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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
commit 0a580b313d
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102
test/hotspot/jtreg/compiler/vectorapi/TestTwoVectorPermute.java Normal file
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/*
* Copyright (c) 2024, 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 8332119
* @summary Incorrect IllegalArgumentException for C2 compiled permute kernel
* @modules jdk.incubator.vector
* @library /test/lib /
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -Xbatch -XX:-TieredCompilation -XX:CompileOnly=TestTwoVectorPermute::micro compiler.vectorapi.TestTwoVectorPermute
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -Xbatch -XX:-TieredCompilation compiler.vectorapi.TestTwoVectorPermute
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -Xbatch -XX:TieredStopAtLevel=3 compiler.vectorapi.TestTwoVectorPermute
*/
package compiler.vectorapi;
import jdk.incubator.vector.*;
import java.util.Arrays;
import java.util.Random;
public class TestTwoVectorPermute {
public static final VectorSpecies<Float> FSP = FloatVector.SPECIES_256;
public static void validate(float[] res, float[] shuf, float[] src1, float[] src2) {
for (int i = 0; i < res.length; i++) {
float expected = Float.NaN;
int shuf_index = (int)shuf[i];
// Exceptional index.
if (shuf_index < 0 || shuf_index >= FSP.length()) {
int wrapped_index = (shuf_index & (FSP.length() - 1));
if (Integer.compareUnsigned(shuf_index, FSP.length()) > 0) {
wrapped_index -= FSP.length();
}
wrapped_index = wrapped_index < 0 ? wrapped_index + FSP.length() : wrapped_index;
expected = src2[wrapped_index];
} else {
expected = src1[shuf_index];
}
if (res[i] != expected) {
throw new AssertionError("Result mismatch at " + i + " index, (actual = " + res[i] + ") != ( expected " + expected + " )");
}
}
}
public static void micro(float[] res, float[] shuf, float[] src1, float[] src2) {
VectorShuffle<Float> vshuf = FloatVector.fromArray(FSP, shuf, 0).toShuffle();
VectorShuffle<Float> vshuf_wrapped = vshuf.wrapIndexes();
FloatVector.fromArray(FSP, src1, 0)
.rearrange(vshuf_wrapped)
.blend(FloatVector.fromArray(FSP, src2, 0)
.rearrange(vshuf_wrapped),
vshuf.laneIsValid().not())
.intoArray(res, 0);
}
public static void main(String [] args) {
float [] res = new float[FSP.length()];
float [] shuf = new float[FSP.length()];
float [] src1 = new float[FSP.length()];
float [] src2 = new float[FSP.length()];
for (int i = 0; i < FSP.length(); i++) {
shuf[i] = i * 2;
}
for (int i = 0; i < FSP.length(); i++) {
src1[i] = i;
src2[i] = i + FSP.length();
}
for (int i = 0; i < 10000; i++) {
micro(res, shuf, src1, src2);
}
validate(res, shuf, src1, src2);
for (int i = 0; i < FSP.length(); i++) {
shuf[i] = -i * 2;
}
for (int i = 0; i < 10000; i++) {
micro(res, shuf, src1, src2);
}
validate(res, shuf, src1, src2);
System.out.println("PASSED");
}
}