mirror of https://github.com/tc39/test262.git
18 lines
534 B
JavaScript
18 lines
534 B
JavaScript
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// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// Check that we do appropriate used/unused field accounting
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var p = Promise.resolve();
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var then = p.then = () => {};
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function spread() { return { ...p }; }
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assertEquals({ then }, spread());
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assertEquals({ then }, spread());
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assertEquals({ then }, spread());
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%OptimizeFunctionOnNextCall(spread);
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assertEquals({ then }, spread());
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