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

85
test/jdk/java/math/BigInteger/ModPowPowersof2.java Normal file
View file

@ -0,0 +1,85 @@
/*
* Copyright (c) 1998, 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 4098742
@summary Test biginteger modpow method
@author Michael McCloskey
@run main/othervm ModPowPowersof2
*/
import java.math.BigInteger;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.File;
import java.io.IOException;
/**
* This class tests to see if using modPow on a power
* of two crashes the vm
*
*/
public class ModPowPowersof2 {
public static void main(String args[]) throws Exception {
// Construct a command that runs the test in other vm
String[] command = new String[4];
int n = 0;
command[n++] = System.getProperty("java.home") + File.separator +
"bin" + File.separator + "java";
if (System.getProperty("java.class.path") != null) {
command[n++] = "-classpath";
command[n++] = System.getProperty("java.class.path");
}
command[n++] = "ModPowPowersof2$ModTester";
// Exec another vm to run test in
Process p = null;
p = Runtime.getRuntime().exec(command);
// Read the result to determine if test failed
BufferedReader in = new BufferedReader(new InputStreamReader(
p.getInputStream()));
String s;
s = in.readLine();
if (s == null)
throw new RuntimeException("ModPow causes vm crash");
}
public static class ModTester {
public static void main(String [] args) {
BigInteger two = BigInteger.valueOf(2);
BigInteger four = BigInteger.valueOf(4);
two.modPow(two, BigInteger.valueOf(4));
two.modPow(two, BigInteger.valueOf(8));
two.modPow(four, BigInteger.valueOf(8));
System.out.println("success");
}
}
}