Upload Kmake

deps/v8/test/mjsunit/shared-memory/regress-crbug-333007256.js

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+// Copyright 2024 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-struct --expose-gc
+
+const Probe = function() {
+  const ProxyConstructor = Proxy;
+  const getPrototypeOf = Object.getPrototypeOf;
+  const setPrototypeOf = Object.setPrototypeOf;
+  function probe(value) {
+    originalPrototype = getPrototypeOf(value);
+    newPrototype = new ProxyConstructor(originalPrototype, function(){});
+    setPrototypeOf(value, newPrototype);
+  }
+  return {
+    probe: probe,
+  };
+}();
+
+gc();
+
+for (let v2 = 0; v2 < 5; v2++) {
+  // Creates a derived map with non-JSObject prototype.
+  Probe.probe(Atomics);
+  Atomics.h = Atomics.Mutex();
+}