22 lines
451 B
JavaScript
22 lines
451 B
JavaScript
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// Copyright 2024 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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return o.x;
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}
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let s1 = new String("abc");
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s1.x = 42;
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let s2 = new String("def");
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s2.y = 17;
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%PrepareFunctionForOptimization(foo);
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assertEquals(42, foo(s1));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(undefined, foo(s2));
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