Upload Kmake

deps/v8/test/mjsunit/regress/regress-crbug-1421198.js

@@ -0,0 +1,18 @@
+// Copyright 2023 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.
+
+
+function body() {
+    // Signal worker has started.
+    this.postMessage(true);
+    // Keep the worker running forever
+    while (true) {
+        new WeakRef([]);
+    }
+}
+const worker = new Worker(body, { type: "function" });
+
+// Wait for the worker to start.
+const workerIsRunning = worker.getMessage();
+// d8 will terminate the workers after running the main script here.