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