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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/lang/Character/TestNegativeCodepoint.java Normal file
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/*
* Copyright (c) 2018, 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 4899380
* @summary Character.is<Property>(int codePoint) methods should return false
* for negative codepoint values. The to<CaseMap> methods should return
* the original codePoint for invalid codePoint ranges.
* @author John O'Conner
*/
public class TestNegativeCodepoint {
public static void main(String[] args) {
int[] invalidCodePoints = { -1, -'a', 0x110000};
for (int x = 0; x < invalidCodePoints.length; ++x) {
int cp = invalidCodePoints[x];
System.out.println("Testing codepoint: " + cp);
// test all of the is<Property> methods
if (Character.isLowerCase(cp) ||
Character.isUpperCase(cp) ||
Character.isTitleCase(cp) ||
Character.isISOControl(cp) ||
Character.isLetterOrDigit(cp) ||
Character.isLetter(cp) ||
Character.isDigit(cp) ||
Character.isDefined(cp) ||
Character.isJavaIdentifierStart(cp) ||
Character.isJavaIdentifierPart(cp) ||
Character.isUnicodeIdentifierStart(cp) ||
Character.isUnicodeIdentifierPart(cp) ||
Character.isIdentifierIgnorable(cp) ||
Character.isSpaceChar(cp) ||
Character.isWhitespace(cp) ||
Character.isMirrored(cp) ||
// test the case mappings
Character.toLowerCase(cp) != cp ||
Character.toUpperCase(cp) != cp ||
Character.toTitleCase(cp) != cp ||
// test directionality of invalid codepoints
Character.getDirectionality(cp) != Character.DIRECTIONALITY_UNDEFINED ||
// test type
Character.getType(cp) != Character.UNASSIGNED ||
// test numeric and digit values
Character.getNumericValue(cp) != -1 ||
Character.digit(cp, 10) != -1 ) {
System.out.println("Failed.");
throw new RuntimeException();
}
// test block value
Character.UnicodeBlock block = null;
try {
block = Character.UnicodeBlock.of(cp);
// if we haven't already thrown an exception because of the illegal
// arguments, then we need to throw one because of an error in the of() method
System.out.println("Failed.");
throw new RuntimeException();
}
catch(IllegalArgumentException e) {
// Since we're testing illegal values, we
// expect to land here every time. If not,
// our test has failed
}
}
System.out.println("Passed.");
}
}