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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/lang/invoke/ObjectMethodInInterfaceTest.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 8031502
* @summary JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
* @compile ObjectMethodInInterfaceTest.java
* @run main/othervm -Djava.lang.invoke.MethodHandle.COMPILE_THRESHOLD=0 test.java.lang.invoke.ObjectMethodInInterfaceTest
*/
package test.java.lang.invoke;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
public class ObjectMethodInInterfaceTest {
public static void main(String[] args) throws Throwable {
MethodHandle mh = MethodHandles.lookup().findVirtual(CharSequence.class, "toString", MethodType.methodType(String.class));
MethodType mt = MethodType.methodType(Object.class, CharSequence.class);
mh = mh.asType(mt);
Object res = mh.invokeExact((CharSequence)"123");
System.out.println("TEST PASSED");
}
}