18 lines
536 B
JavaScript
18 lines
536 B
JavaScript
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// Copyright 2019 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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function foo(arg) {
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var ret = { x: arg };
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ret.__defineSetter__("y", function() { });
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return ret;
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}
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// v1 creates a map with a Smi field, v2 deprecates v1's map.
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let v1 = foo(10);
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let v2 = foo(10.5);
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// Trigger a PrepareForDataProperty on v1, which also triggers an update to
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// dictionary due to the different accessors on v1 and v2's y property.
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v1.x = 20.5;
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