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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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64
test/jdk/java/foreign/TestDowncallBase.java Normal file
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/*
* Copyright (c) 2020, 2022, 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.
*/
import java.lang.foreign.Arena;
import java.lang.foreign.Linker;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.SegmentAllocator;
import java.lang.invoke.MethodHandle;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Consumer;
import java.util.stream.Stream;
public class TestDowncallBase extends CallGeneratorHelper {
Object doCall(MemorySegment symbol, SegmentAllocator allocator, FunctionDescriptor descriptor, Object[] args) throws Throwable {
MethodHandle mh = downcallHandle(LINKER, symbol, allocator, descriptor);
return mh.invokeWithArguments(args);
}
static FunctionDescriptor function(Ret ret, List<ParamType> params, List<StructFieldType> fields, List<MemoryLayout> prefix) {
List<MemoryLayout> pLayouts = params.stream().map(p -> p.layout(fields)).toList();
MemoryLayout[] paramLayouts = Stream.concat(prefix.stream(), pLayouts.stream()).toArray(MemoryLayout[]::new);
return ret == Ret.VOID ?
FunctionDescriptor.ofVoid(paramLayouts) :
FunctionDescriptor.of(paramLayouts[prefix.size()], paramLayouts);
}
static Object[] makeArgs(Arena arena, FunctionDescriptor descriptor, List<Consumer<Object>> checks, int returnIdx) {
List<MemoryLayout> argLayouts = descriptor.argumentLayouts();
TestValue[] args = new TestValue[argLayouts.size()];
int argNum = 0;
for (MemoryLayout layout : argLayouts) {
args[argNum++] = genTestValue(layout, arena);
}
if (descriptor.returnLayout().isPresent()) {
checks.add(args[returnIdx].check());
}
return Stream.of(args).map(TestValue::value).toArray();
}
}