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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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104
test/hotspot/jtreg/compiler/vectorapi/VectorBoxExpandTest.java Normal file
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/*
* Copyright (c) 2023, Arm Limited. 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 jdk.incubator.vector.IntVector;
/*
* @test
* @bug 8304948
* @summary C2 crashes when expanding VectorBox
* @modules jdk.incubator.vector
* @library /test/lib
*
* @run main/othervm -Xbatch -XX:-TieredCompilation -ea -XX:CompileCommand=dontinline,*VectorBoxExpandTest.test compiler.vectorapi.VectorBoxExpandTest
*/
public class VectorBoxExpandTest {
private static final int ARR_LEN = 1024;
private static final int NUM_ITER = 2000;
private static int[] iarr = new int[ARR_LEN];
private static IntVector g;
private static int acc = 0;
// C2 would generate IR graph like below:
//
// ------------
// / \
// Region | VectorBox |
// \ | / |
// Phi |
// | |
// | |
// Region | VectorBox |
// \ | / |
// Phi |
// | |
// |\------------/
// |
//
//
// which would be optimized by merge_through_phi through Phi::Ideal and some
// other transformations. Finally C2 would expand VectorBox on a graph like
// below:
//
// ------------
// / \
// Region | Proj |
// \ | / |
// Phi |
// | |
// | |
// Region | Proj |
// \ | / |
// Phi |
// | |
// |\------------/
// |
// | Phi
// | /
// VectorBox
//
// where the cycle case should be taken into consideration as well.
private static void test() {
IntVector a = IntVector.fromArray(IntVector.SPECIES_PREFERRED, iarr, 0);
for (int ic = 0; ic < NUM_ITER; ic++) {
for (int i = 0; i < iarr.length; i++) {
acc += System.identityHashCode(a);
a = a.add(a);
acc += System.identityHashCode(a);
}
}
g = a;
acc += System.identityHashCode(a);
}
public static void main(String[] args) {
test();
System.out.println("PASS");
}
}