a2e9a19edd
Also add a DCHECK to a branch that can only be taken for the null prototype. R=sigurds@chromium.org Change-Id: Ib94fe8f25ecfd1a4baa576915e6edfa60bcd771b Reviewed-on: https://chromium-review.googlesource.com/1109961 Commit-Queue: Georg Neis <neis@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#53939}
28 lines
804 B
JavaScript
28 lines
804 B
JavaScript
// Copyright 2018 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 TestWithNullPrototype() {
|
|
function f() { return Object.create(null); }
|
|
f();
|
|
%OptimizeFunctionOnNextCall(f);
|
|
assertEquals(undefined, f().foo);
|
|
})();
|
|
|
|
(function TestWithCustomPrototype() {
|
|
const x = {foo: 42}; // This must be defined here for context specialization.
|
|
function f() { return Object.create(x); }
|
|
f();
|
|
%OptimizeFunctionOnNextCall(f);
|
|
assertEquals(42, f().foo);
|
|
})();
|
|
|
|
(function TestWithObjectPrototype() {
|
|
function f() { return Object.create(Object.prototype); }
|
|
f();
|
|
%OptimizeFunctionOnNextCall(f);
|
|
assertEquals("[object Object]", f().toString());
|
|
})();
|