blob: b8f3e56ce4f0b1f8e3f9d3c7f6442946507c5e91 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// 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.
// Flags: --allow-natives-syntax
(function NoStoreBecauseReadonlyLength() {
var a = [];
Object.defineProperty(a, 'length', { writable: false });
function f() {
var o = {__proto__: a};
o.push;
};
%PrepareFunctionForOptimization(f);
f();
f();
%OptimizeFunctionOnNextCall(f);
a[0] = 1.1;
f();
assertEquals(undefined, a[0]);
})();
(function NoStoreBecauseTypedArrayProto() {
const arr_proto = [].__proto__;
const arr = [];
function f() {
const i32arr = new Int32Array();
const obj = {};
obj.__proto__ = arr;
arr_proto.__proto__ = i32arr;
obj.__proto__ = arr;
arr_proto.__proto__ = i32arr;
};
%PrepareFunctionForOptimization(f);
f();
%OptimizeFunctionOnNextCall(f);
arr[1024] = [];
f();
assertEquals(undefined, arr[1024]);
})();
|
