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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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test/jdk/java/util/ArrayList/EnsureCapacity.java Normal file
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/*
* Copyright (c) 2010, 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 6992121
* @summary Test the ArrayList.ensureCapacity() and Vector.ensureCapacity
* method with negative minimumCapacity input argument.
*/
import java.util.ArrayList;
import java.util.Vector;
public class EnsureCapacity {
public static void main(String[] args) {
testArrayList();
testVector();
}
private static void checkCapacity(int before, int after) {
if (before != after) {
throw new RuntimeException("capacity is expected to be unchanged: " +
"before=" + before + " after=" + after);
}
}
private static void testArrayList() {
ArrayList<String> al = new ArrayList<String>();
al.add("abc");
al.ensureCapacity(Integer.MIN_VALUE);
// there is no method to query the capacity of ArrayList
// so before and after capacity are not checked
}
private static void testVector() {
Vector<String> vector = new Vector<String>();
vector.add("abc");
int cap = vector.capacity();
vector.ensureCapacity(Integer.MIN_VALUE);
checkCapacity(cap, vector.capacity());
}
}