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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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131
test/jdk/java/math/BigDecimal/ToPlainStringTests.java Normal file
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/*
* Copyright (c) 2004, 2025, 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 4984872 8318915
* @summary Basic tests of toPlainString method
* @run main ToPlainStringTests
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+EliminateAutoBox -XX:AutoBoxCacheMax=20000 ToPlainStringTests
*/
import java.math.*;
public class ToPlainStringTests {
public static void main(String argv[]) {
String [][] testCases = {
{"0", "0"},
{"1", "1"},
{"10", "10"},
{"2e1", "20"},
{"3e2", "300"},
{"4e3", "4000"},
{"5e4", "50000"},
{"6e5", "600000"},
{"7e6", "7000000"},
{"8e7", "80000000"},
{"9e8", "900000000"},
{"1e9", "1000000000"},
{".0", "0.0"},
{".1", "0.1"},
{".10", "0.10"},
{"1e-1", "0.1"},
{"1e-1", "0.1"},
{"2e-2", "0.02"},
{"3e-3", "0.003"},
{"4e-4", "0.0004"},
{"5e-5", "0.00005"},
{"6e-6", "0.000006"},
{"7e-7", "0.0000007"},
{"8e-8", "0.00000008"},
{"9e-9", "0.000000009"},
{"9000e-12", "0.000000009000"},
{"9000e-22", "0.0000000000000000009000"},
{"12345678901234567890", "12345678901234567890"},
{"12345678901234567890e22", "123456789012345678900000000000000000000000"},
{"12345678901234567890e-22", "0.0012345678901234567890"},
{"12345e-1", "1234.5"},
{"12345e-2", "123.45"},
{"12345e-3", "12.345"},
{"12345e-4", "1.2345"},
};
int errors = 0;
for(String[] testCase: testCases) {
BigDecimal bd = new BigDecimal(testCase[0]);
String s;
if (!(s=bd.toPlainString()).equals(testCase[1])) {
errors++;
System.err.println("Unexpected plain result ``" +
s + "'' from BigDecimal " +
bd);
}
bd = new BigDecimal("-"+testCase[0]);
if (bd.signum()!=0 && !(s=(bd.toPlainString())).equals("-"+testCase[1])) {
errors++;
System.err.println("Unexpected plain result ``" +
s + "'' from BigDecimal " +
bd);
}
}
String[] failingCases = {
"1E-" + (Integer.MAX_VALUE - 0), // MAX_VALUE + 2 chars
"1E-" + (Integer.MAX_VALUE - 1), // MAX_VALUE + 1 chars
"-1E-" + (Integer.MAX_VALUE - 0), // MAX_VALUE + 3 chars
"-1E-" + (Integer.MAX_VALUE - 1), // MAX_VALUE + 2 chars
"-1E-" + (Integer.MAX_VALUE - 2), // MAX_VALUE + 1 chars
"123456789E-" + (Integer.MAX_VALUE - 0), // MAX_VALUE + 2 chars
"123456789E-" + (Integer.MAX_VALUE - 1), // MAX_VALUE + 1 chars
"-123456789E-" + (Integer.MAX_VALUE - 0), // MAX_VALUE + 3 chars
"-123456789E-" + (Integer.MAX_VALUE - 1), // MAX_VALUE + 2 chars
"-123456789E-" + (Integer.MAX_VALUE - 2), // MAX_VALUE + 1 chars
"1E" + Integer.MAX_VALUE, // MAX_VALUE + 1 chars
"123456789E" + Integer.MAX_VALUE, // MAX_VALUE + 9 chars
"-1E" + Integer.MAX_VALUE, // MAX_VALUE + 2 chars
"-123456789E" + Integer.MAX_VALUE, // MAX_VALUE + 10 chars
};
/* We expect pre-emptive OutOfMemoryErrors, nothing else */
for (String failingCase : failingCases) {
try {
new BigDecimal(failingCase).toPlainString();
} catch (OutOfMemoryError expected) {
continue;
} catch (Throwable ignored) {
}
++errors;
}
if(errors > 0)
throw new RuntimeException(errors + " errors during run.");
}
}