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f579e11940
PR-URL: https://github.com/nodejs/node/pull/26685 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
34 lines
601 B
JavaScript
34 lines
601 B
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// This test writes {} to x to trigger lazy deopt
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// from inside the number constructor.
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var x = "5";
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var b = false;
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check = function() {
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if (b) x = {};
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return 0;
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}
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var obj = {};
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obj.valueOf = check;
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function f() {
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try {
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return x + Number(obj);
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} catch(e) {
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console.log(e.stack);
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}
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}
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%PrepareFunctionForOptimization(f);
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f();
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f();
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%OptimizeFunctionOnNextCall(f);
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b = true;
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f();
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