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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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73
test/jdk/java/lang/Math/AbsPositiveZero.java Normal file
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/*
* Copyright (c) 1998, 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 4096278
@summary Math.abs(+0.0) wrong
@author Anand Palaniswamy
*/
public class AbsPositiveZero {
private static boolean isPositiveZero(float f) {
return Float.floatToIntBits(f) == Float.floatToIntBits(0.0f);
}
private static boolean isPositiveZero(double d) {
return Double.doubleToLongBits(d) == Double.doubleToLongBits(0.0d);
}
public static void main(String[] args) throws Exception {
if (!isPositiveZero(Math.abs(-0.0d))) {
throw new Exception("abs(-0.0d) failed");
}
if (!isPositiveZero(Math.abs(+0.0d))) {
throw new Exception("abs(+0.0d) failed");
}
if (Math.abs(Double.POSITIVE_INFINITY) != Double.POSITIVE_INFINITY) {
throw new Exception("abs(+Inf) failed");
}
if (Math.abs(Double.NEGATIVE_INFINITY) != Double.POSITIVE_INFINITY) {
throw new Exception("abs(-Inf) failed");
}
double dnanval = Math.abs(Double.NaN);
if (dnanval == dnanval) {
throw new Exception("abs(NaN) failed");
}
if (!isPositiveZero(Math.abs(-0.0f))) {
throw new Exception("abs(-0.0f) failed");
}
if (!isPositiveZero(Math.abs(+0.0f))) {
throw new Exception("abs(+0.0f) failed");
}
if (Math.abs(Float.POSITIVE_INFINITY) != Float.POSITIVE_INFINITY) {
throw new Exception("abs(+Inf) failed");
}
if (Math.abs(Float.NEGATIVE_INFINITY) != Float.POSITIVE_INFINITY) {
throw new Exception("abs(-Inf) failed");
}
float fnanval = Math.abs(Float.NaN);
if (fnanval == fnanval) {
throw new Exception("abs(NaN) failed");
}
}
}