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

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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/foreign/TestUpcallStack.java
+++ b/test/jdk/java/foreign/TestUpcallStack.java
@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2022, 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
+ * @requires (!(os.name == "Mac OS X" & os.arch == "aarch64") | jdk.foreign.linker != "FALLBACK")
+ * @modules java.base/jdk.internal.foreign
+ * @build NativeTestHelper CallGeneratorHelper TestUpcallBase
+ *
+ * @run testng/othervm/native/timeout=480 -Xcheck:jni -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies
+ *   --enable-native-access=ALL-UNNAMED -Dgenerator.sample.factor=17
+ *   TestUpcallStack
+ */
+
+import java.lang.foreign.Arena;
+import java.lang.foreign.FunctionDescriptor;
+import java.lang.foreign.MemorySegment;
+
+import org.testng.annotations.Test;
+
+import java.lang.invoke.MethodHandle;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Consumer;
+
+public class TestUpcallStack extends TestUpcallBase {
+
+    static {
+        System.loadLibrary("TestUpcallStack");
+    }
+
+    @Test(dataProvider="functions", dataProviderClass=CallGeneratorHelper.class)
+    public void testUpcallsStack(int count, String fName, Ret ret, List<ParamType> paramTypes,
+                                 List<StructFieldType> fields) throws Throwable {
+        List<Consumer<Object>> returnChecks = new ArrayList<>();
+        List<Consumer<Object>> argChecks = new ArrayList<>();
+        MemorySegment addr = findNativeOrThrow("s" + fName);
+        try (Arena arena = Arena.ofConfined()) {
+            FunctionDescriptor descriptor = functionStack(ret, paramTypes, fields);
+            MethodHandle mh = downcallHandle(LINKER, addr, arena, descriptor);
+            AtomicReference<Object[]> capturedArgs = new AtomicReference<>();
+            Object[] args = makeArgsStack(capturedArgs, arena, descriptor, returnChecks, argChecks);
+
+            Object res = mh.invokeWithArguments(args);
+
+            if (ret == Ret.NON_VOID) {
+                returnChecks.forEach(c -> c.accept(res));
+            }
+
+            Object[] capturedArgsArr = capturedArgs.get();
+            for (int capturedIdx = STACK_PREFIX_LAYOUTS.size(), checkIdx = 0;
+                 capturedIdx < capturedArgsArr.length;
+                 capturedIdx++, checkIdx++) {
+                argChecks.get(checkIdx).accept(capturedArgsArr[capturedIdx]);
+            }
+        }
+    }
+
+    static FunctionDescriptor functionStack(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
+        return function(ret, params, fields, STACK_PREFIX_LAYOUTS);
+    }
+
+    static Object[] makeArgsStack(AtomicReference<Object[]> capturedArgs, Arena session, FunctionDescriptor descriptor,
+                                  List<Consumer<Object>> checks, List<Consumer<Object>> argChecks) {
+        return makeArgs(capturedArgs, session, descriptor, checks, argChecks, STACK_PREFIX_LAYOUTS.size());
+    }
+
+}