e9acaed6b8
This CL fixes a previous change in String.prototype.startsWith which didn't throw an exception (in the optimized version) when `undefined` was passed as a receiver and the search string was the empty string. Bug: chromium:1230260 Change-Id: I835bd409b09b78bf7235c77596f62b588c95611d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3040841 Commit-Queue: Maya Lekova <mslekova@chromium.org> Commit-Queue: Georg Neis <neis@chromium.org> Auto-Submit: Maya Lekova <mslekova@chromium.org> Reviewed-by: Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#75818}
22 lines
578 B
JavaScript
22 lines
578 B
JavaScript
// Copyright 2021 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 --no-lazy-feedback-allocation
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function foo() {
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String.prototype.startsWith.call(undefined, "");
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}
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%PrepareFunctionForOptimization(foo);
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assertThrows(foo);
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%OptimizeFunctionOnNextCall(foo);
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assertThrows(foo);
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function bar() {
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"bla".startsWith("", Symbol(''));
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}
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%PrepareFunctionForOptimization(bar);
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assertThrows(bar);
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%OptimizeFunctionOnNextCall(bar);
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assertThrows(bar);
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