994db73210
Bug: v8:8801,v8:8394,v8:9183 Change-Id: I55027b3ba0c78f40d82aaf2d160aaf957d02cab5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1662292 Auto-Submit: Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#62214}
25 lines
536 B
JavaScript
25 lines
536 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 foo(o) {
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try {
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for (var x in o) {}
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return false;
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} catch (e) {
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return true;
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}
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}
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%PrepareFunctionForOptimization(foo);
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var o = new Proxy({a:1},{
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getOwnPropertyDescriptor(target, property) { throw target; }
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});
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assertTrue(foo(o));
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assertTrue(foo(o));
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%OptimizeFunctionOnNextCall(foo);
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assertTrue(foo(o));
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