5fe0c6c63e
Bug: v8:6702 Change-Id: I6e2fc1a56035b9841ad5c71504b74a89d7259ad1 Reviewed-on: https://chromium-review.googlesource.com/651366 Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#47851}
21 lines
522 B
JavaScript
21 lines
522 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 --opt
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// Ensure that we properly check for elements on the prototypes.
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function foo(o) {
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var s = "";
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for (var i in o) s += i;
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return s;
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}
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var a = [];
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assertEquals("", foo(a));
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assertEquals("", foo(a));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals("", foo(a));
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Array.prototype[0] = 1;
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assertEquals("0", foo(a));
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