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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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test/jdk/java/util/Formatter/BigDecimalRounding.java Normal file
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/*
* Copyright (c) 2021, 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 8262744
* @summary BigDecimal does not always display formatting correctly because
* rounding is done after formatting check. Fix moves rounding to before the
* range-based formatting check for %g formatting flag.
* @run testng BigDecimalRounding
*/
import org.testng.annotations.Test;
import java.math.BigDecimal;
import static org.testng.Assert.*;
@Test
public class BigDecimalRounding {
public static void testBigDecimalRounding() {
var res1 = String.format("%g", 0.00009999999999999995);
var res2 = String.format("%g", 0.00009999999f);
var res3 = String.format("%g", new BigDecimal(0.0001));
var res4 = String.format("%g", new BigDecimal("0.00009999999999999999995"));
assertEquals(res1, res2);
assertEquals(res2, res3);
assertEquals(res3, res4);
var res5 = String.format("%.9g", 999999.999999432168754e+3);
var res6 = String.format("%.9g", 999999999.999432168754f);
var res7 = String.format("%.9g", new BigDecimal("999999.999999432168754e+3")); // !!
var res8 = String.format("%.9g", new BigDecimal("1000000000")); // !!
assertEquals(res5, res6);
assertEquals(res6, res7);
assertEquals(res7, res8);
}
}