e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
23 lines
526 B
JavaScript
23 lines
526 B
JavaScript
// Copyright 2016 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() {}
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foo.__defineGetter__(undefined, function() {});
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function bar() {}
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function baz(x) {
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return x instanceof bar;
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};
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%PrepareFunctionForOptimization(baz);
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;
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%OptimizeFunctionOnNextCall(baz);
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baz();
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Object.setPrototypeOf(bar, null);
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bar[Symbol.hasInstance] = function() {
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return true;
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};
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assertTrue(baz());
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