31a3cfbc10
BUG=v8:8801 Change-Id: I9d9d9824c6c9ad0176bbfd3723da1b578b17c256 Reviewed-on: https://chromium-review.googlesource.com/c/1495555 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#60001}
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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