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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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54
test/jdk/java/util/Collections/CheckedMapReplaceAll.java Normal file
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/*
* Copyright (c) 2014, 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 8047795
* @summary Ensure that replaceAll operator cannot add bad elements
* @author Mike Duigou
*/
import java.util.*;
import java.util.function.BiFunction;
public class CheckedMapReplaceAll {
public static void main(String[] args) {
Map<Integer,Double> unwrapped = new HashMap<>();
unwrapped.put(1, 1.0);
unwrapped.put(2, 2.0);
unwrapped.put(3, 3.0);
Map<Integer,Double> wrapped = Collections.checkedMap(unwrapped, Integer.class, Double.class);
BiFunction evil = (k, v) -> (((int)k) % 2 != 0) ? v : "evil";
try {
wrapped.replaceAll(evil);
System.out.printf("Bwahaha! I have defeated you! %s\n", wrapped);
throw new RuntimeException("String added to checked Map<Integer,Double>");
} catch (ClassCastException thwarted) {
thwarted.printStackTrace(System.out);
System.out.println("Curses! Foiled again!");
}
}
}