33 lines
565 B
JavaScript
33 lines
565 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
|
||
|
|
|
||
|
|
// This test writes {} to x to trigger lazy deopt
|
||
|
|
// from inside the number constructor.
|
||
|
|
var x = "5";
|
||
|
|
var b = false;
|
||
|
|
|
||
|
|
check = function() {
|
||
|
|
if (b) x = {};
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
var obj = {};
|
||
|
|
obj.valueOf = check;
|
||
|
|
|
||
|
|
function f() {
|
||
|
|
try {
|
||
|
|
return x + Number(obj);
|
||
|
|
} catch(e) {
|
||
|
|
console.log(e.stack);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
f();
|
||
|
|
f();
|
||
|
|
%OptimizeFunctionOnNextCall(f);
|
||
|
|
b = true;
|
||
|
|
f();
|