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
|
// Copyright 2017 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
class A {
constructor(arg) {
assertEquals(123, arg);
assertSame(observer, new.target);
superclass_counter++;
}
}
class B extends A {
constructor() {
super(123);
construction_counter++;
}
}
var superclass_counter = 0;
var construction_counter = 0;
var observation_counter = 0;
var observer = new Proxy(A, {
get(target, property, receiver) {
if (property === 'prototype') {
%DeoptimizeFunction(B);
observation_counter++;
}
return Reflect.get(target, property, receiver);
}
});
Reflect.construct(B, [], observer);
Reflect.construct(B, [], observer);
%OptimizeFunctionOnNextCall(B);
Reflect.construct(B, [], observer);
assertEquals(3, observation_counter);
assertEquals(3, construction_counter);
assertEquals(3, superclass_counter);
|
