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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/StackWalker/DumpStackTest.java Normal file
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/*
* Copyright (c) 2015, 2025, 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 8143214
* @summary Verify outputs of Thread.dumpStack() and Throwable.printStackTrace().
* This test should also been run against jdk9 successfully except of
* VM option MemberNameInStackFrame.
* @requires test.thread.factory == null
* @run main/othervm DumpStackTest
*/
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.function.Consumer;
public class DumpStackTest {
public static void main(String args[]) {
test();
testThread();
testLambda();
testMethodInvoke();
testMethodHandle();
}
static class CallFrame {
final String classname;
final String methodname;
CallFrame(Class<?> c, String methodname) {
this(c.getName(), methodname);
}
CallFrame(String classname, String methodname) {
this.classname = classname;
this.methodname = methodname;
}
String getClassName() {
return classname;
}
String getMethodName() {
return methodname;
}
String getFileName() {
int i = classname.lastIndexOf('.');
int j = classname.lastIndexOf('$');
String name = classname.substring(i+1, j >= 0 ? j : classname.length());
return name + ".java";
}
@Override
public String toString() {
return classname + "." + methodname + "(" + getFileName() + ")";
}
}
static void test() {
CallFrame[] callStack = new CallFrame[] {
new CallFrame(Thread.class, "getStackTrace"),
new CallFrame(DumpStackTest.class, "test"),
new CallFrame(DumpStackTest.class, "main"),
// if invoked from jtreg
new CallFrame("jdk.internal.reflect.DirectMethodHandleAccessor", "invoke"), // non-public class
new CallFrame(Method.class, "invoke"),
new CallFrame(Thread.class, "run"),
};
assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
getStackTrace(callStack);
}
static void getStackTrace(CallFrame[] callStack) {
// this method is the top of the stack
callStack[0] = new CallFrame(DumpStackTest.class, "getStackTrace");
try {
throw new RuntimeException();
} catch(RuntimeException ex) {
assertStackTrace(ex.getStackTrace(), callStack);
}
}
static void testThread() {
Thread t1 = new Thread() {
public void run() {
c();
}
void c() {
CallFrame[] callStack = new CallFrame[] {
new CallFrame(Thread.class, "getStackTrace"),
new CallFrame(this.getClass(), "c"),
new CallFrame(this.getClass(), "run")
};
assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
DumpStackTest.getStackTrace(callStack);
}
};
t1.start();
try {
t1.join();
} catch(InterruptedException e) {}
}
static void testLambda() {
Consumer<Void> c = (x) -> consumeLambda();
c.accept(null);
}
static void consumeLambda() {
CallFrame[] callStack = new CallFrame[]{
new CallFrame(Thread.class, "getStackTrace"),
new CallFrame(DumpStackTest.class, "consumeLambda"),
new CallFrame(DumpStackTest.class, "lambda$testLambda$0"),
new CallFrame(DumpStackTest.class, "testLambda"),
new CallFrame(DumpStackTest.class, "main"),
// if invoked from jtreg
new CallFrame("jdk.internal.reflect.DirectMethodHandleAccessor", "invoke"),
new CallFrame(Method.class, "invoke"),
new CallFrame(Thread.class, "run")
};
assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
DumpStackTest.getStackTrace(callStack);
}
static void testMethodInvoke() {
try {
Method m = DumpStackTest.class.getDeclaredMethod("methodInvoke");
m.invoke(null);
} catch(Exception e) {
throw new RuntimeException(e);
}
}
static void methodInvoke() {
CallFrame[] callStack = new CallFrame[] {
new CallFrame(Thread.class, "getStackTrace"),
new CallFrame(DumpStackTest.class, "methodInvoke"),
new CallFrame("jdk.internal.reflect.DirectMethodHandleAccessor", "invoke"),
new CallFrame(Method.class, "invoke"),
new CallFrame(DumpStackTest.class, "testMethodInvoke"),
new CallFrame(DumpStackTest.class, "main"),
// if invoked from jtreg
new CallFrame("jdk.internal.reflect.DirectMethodHandleAccessor", "invoke"),
new CallFrame(Method.class, "invoke"),
new CallFrame(Thread.class, "run")
};
assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
DumpStackTest.getStackTrace(callStack);
}
static void testMethodHandle() {
MethodHandles.Lookup lookup = MethodHandles.lookup();
try {
MethodHandle handle = lookup.findStatic(DumpStackTest.class, "methodHandle",
MethodType.methodType(void.class));
handle.invoke();
} catch(Throwable t) {
throw new RuntimeException(t);
}
}
static void methodHandle() {
CallFrame[] callStack = new CallFrame[]{
new CallFrame(Thread.class, "getStackTrace"),
new CallFrame(DumpStackTest.class, "methodHandle"),
new CallFrame(DumpStackTest.class, "testMethodHandle"),
new CallFrame(DumpStackTest.class, "main"),
// if invoked from jtreg
new CallFrame("jdk.internal.reflect.DirectMethodHandleAccessor", "invoke"),
new CallFrame(Method.class, "invoke"),
new CallFrame(Thread.class, "run")
};
assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
DumpStackTest.getStackTrace(callStack);
}
static void assertStackTrace(StackTraceElement[] actual, CallFrame[] expected) {
System.out.println("--- Actual ---");
Arrays.stream(actual).forEach(e -> System.out.println(e));
System.out.println("--- Expected ---");
Arrays.stream(expected).forEach(e -> System.out.println(e));
for (int i = 0, j = 0; i < actual.length; i++) {
// filter test framework classes
if (actual[i].getClassName().startsWith("com.sun.javatest.regtest"))
continue;
assertEquals(actual[i], expected[j++], i);
}
}
static void assertEquals(StackTraceElement actual, CallFrame expected, int idx) {
if (!actual.getClassName().equals(expected.getClassName()) ||
!actual.getFileName().equals(expected.getFileName()) ||
!actual.getMethodName().equals(expected.getMethodName())) {
throw new RuntimeException("StackTraceElements mismatch at index " + idx +
". Expected [" + expected + "], but get [" + actual + "]");
}
}
}