a7cbf19a82
PR-URL: https://github.com/nodejs/node/pull/38273 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com> Reviewed-By: Mary Marchini <oss@mmarchini.me>
30 lines
1009 B
JavaScript
30 lines
1009 B
JavaScript
// Copyright 2021 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.
|
|
|
|
// Flags: --allow-natives-syntax
|
|
|
|
function foo(first_run) {
|
|
let o = { x: 0 };
|
|
if (first_run) assertTrue(%HasOwnConstDataProperty(o, 'x'));
|
|
Object.defineProperty(o, 'x', { get() { return 1; }, configurable: true, enumerable: true });
|
|
delete o.x;
|
|
o.x = 23;
|
|
|
|
if (%IsDictPropertyConstTrackingEnabled()) {
|
|
// TODO(11248, ishell) Adding a property always sets it to constant if
|
|
// V8_DICT_PROPERTY_CONST_TRACKING is enabled, even if the property was
|
|
// deleted before and is re-added. See
|
|
// LookupIterator::PrepareTransitionToDataProperty, specically the usage of
|
|
// PropertyDetails::kConstIfDictConstnessTracking in there.
|
|
return;
|
|
}
|
|
|
|
if (first_run) assertFalse(%HasOwnConstDataProperty(o, 'x'));
|
|
}
|
|
%PrepareFunctionForOptimization(foo);
|
|
foo(true);
|
|
foo(false);
|
|
%OptimizeFunctionOnNextCall(foo);
|
|
foo(false);
|