v8/test/mjsunit/regress/regress-4271.js

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// Copyright 2015 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.
if (this.Worker) {
// Throw rather than overflow internal field index
assertThrows(function() {
Worker.prototype.terminate();
});
assertThrows(function() {
Worker.prototype.getMessage();
});
assertThrows(function() {
Worker.prototype.postMessage({});
});
// Don't throw for real worker
var worker = new Worker('');
worker.getMessage();
worker.postMessage({});
worker.terminate();
}