34 lines
684 B
JavaScript
34 lines
684 B
JavaScript
|
// Copyright 2022 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
|
||
|
|
|
||
|
|
let caught = false;
|
||
|
|
|
||
|
|
function main() {
|
||
|
|
class B {
|
||
|
|
m() {
|
||
|
|
try {
|
||
|
|
return super.nodeType; // The access site (megamorphic)
|
||
|
|
} catch (e) {
|
||
|
|
caught = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
const node = new d8.dom.Div(); // API obj
|
||
|
|
B.prototype.__proto__ = node; // Lookup start obj == API obj
|
||
|
|
const b = new B();
|
||
|
|
|
||
|
|
b.x0 = 2;
|
||
|
|
b.x1 = 10;
|
||
|
|
b.x2 = 3;
|
||
|
|
b.x3 = 4;
|
||
|
|
for (let i = 0; i < 20000; i++) {
|
||
|
|
caught = false;
|
||
|
|
b.m();
|
||
|
|
assertTrue(caught);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
main();
|