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Issue 2788603002: [turbofan] Disable inlining of derived class constructors. (Closed)
Patch Set: Created 3 years, 8 months ago
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1 // Copyright 2017 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Flags: --allow-natives-syntax
6
7 class A extends Object {
8 constructor(arg) {
9 super();
10 superclass_counter++;
11 if (superclass_counter === 3) {
12 return 1;
13 }
14 }
15 }
16
17 class B extends A {
18 constructor() {
19 let x = super(123);
20 return x.a;
21 }
22 }
23
24 var superclass_counter = 0;
25 var observer = new Proxy(A, {
26 get(target, property, receiver) {
27 if (property === 'prototype') {
28 %DeoptimizeFunction(B);
29 }
30 return Reflect.get(target, property, receiver);
31 }
32 });
33
34 Reflect.construct(B, [], observer);
35 Reflect.construct(B, [], observer);
36 %OptimizeFunctionOnNextCall(B);
37 assertThrows(() => Reflect.construct(B, [], observer), TypeError);
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