933a874e1d
This fixes the lowering of Reflect.getPrototypeOf and friends to not perform a [[ToObject]] coercion, but bailout instead. We ensure to exclude primitive values from the lowering. This makes the lowering uniform between "Reflect.getPrototypeOf" and "Object.getPrototypeOf". R=bmeurer@chromium.org TEST=mjsunit/regress/regress-crbug-740116 BUG=chromium:740116 Change-Id: If986ee2a3ae4e8f1fd227bdeb4668f523b0dea84 Reviewed-on: https://chromium-review.googlesource.com/565295 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#46556}
30 lines
925 B
JavaScript
30 lines
925 B
JavaScript
// Copyright 2017 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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(function TestReflectGetPrototypeOfOnPrimitive() {
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function f() { return Reflect.getPrototypeOf(""); }
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assertThrows(f, TypeError);
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assertThrows(f, TypeError);
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%OptimizeFunctionOnNextCall(f);
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assertThrows(f, TypeError);
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})();
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(function TestObjectGetPrototypeOfOnPrimitive() {
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function f() { return Object.getPrototypeOf(""); }
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assertSame(String.prototype, f());
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assertSame(String.prototype, f());
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%OptimizeFunctionOnNextCall(f);
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assertSame(String.prototype, f());
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})();
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(function TestDunderProtoOnPrimitive() {
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function f() { return "".__proto__; }
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assertSame(String.prototype, f());
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assertSame(String.prototype, f());
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%OptimizeFunctionOnNextCall(f);
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assertSame(String.prototype, f());
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})();
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