| // 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; |
