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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/invoke/FinalVirtualCallFromInterface.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 8200167 8010319
* @summary Regression test for a bug introduced in 8200167 and fixed in 8010319
* @run main FinalVirtualCallFromInterface
*/
import java.lang.invoke.*;
/*
* Test that a MethodHandle for a final method, called from an interface, works correctly.
* With only 8200167 applied this fails with:
* Exception in thread "main" java.lang.InternalError: Should only be invoked on a subclass
* at
* java.base/java.lang.invoke.DirectMethodHandle.checkReceiver(DirectMethodHandle.java:441)
*
* The nestmate update under 8010319 fixes that bug.
*/
public class FinalVirtualCallFromInterface {
static class Final {
public final void fm() {}
}
static interface FinalUser {
static void test() throws Throwable {
MethodType mt = MethodType.methodType(void.class);
MethodHandle mh = MethodHandles.lookup().findVirtual(Final.class, "fm", mt);
Final f = new Final();
mh.invokeExact(f);
mh.invoke(f);
}
}
public static void main(String[] args) throws Throwable {
FinalUser.test();
}
}