engineering/java-topology
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

undefect. CWE-407 — 63 sites patched across 27 ecosystems

Browse source 
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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

74
test/jdk/java/lang/invoke/lookup/ReflectiveLookupTest.java Normal file
View file

@ -0,0 +1,74 @@
/*
* Copyright (c) 2017, 2023, 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 8020801
* @summary Restriction on reflective call to MethodHandles.lookup method
* @run main java.base/java.lang.LookupTest
* @run main ReflectiveLookupTest
*/
import java.lang.invoke.*;
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.reflect.Method;
import static java.lang.invoke.MethodType.*;
/*
* Lookup object can be obtained statically or reflectively.
*/
public class ReflectiveLookupTest {
public static void main(String... args) throws Throwable {
// Get a full power lookup
Lookup lookup1 = MethodHandles.lookup();
MethodHandle mh1 = lookup1.findStatic(lookup1.lookupClass(),
"foo",
methodType(String.class));
assertEquals((String) mh1.invokeExact(), foo());
Method lookupMethod = MethodHandles.class.getMethod("lookup");
System.out.println("reflection method: " + lookupMethod);
assertEquals(lookupMethod.getName(), "lookup");
// Get a full power Lookup reflectively.
Lookup lookup2 = (Lookup) lookupMethod.invoke(null);
assertEquals(lookup1.lookupClass(), lookup2.lookupClass());
assertEquals(lookup1.lookupModes(), lookup2.lookupModes());
MethodHandle mh2 = lookup2.findStatic(lookup2.lookupClass(),
"foo",
methodType(String.class));
assertEquals((String) mh2.invokeExact(), foo());
}
static String foo() {
return "foo!";
}
static void assertEquals(Object o1, Object o2) {
if (!o1.equals(o2)) {
throw new RuntimeException(o1 + " != " + o2);
}
}
}