20 lines
581 B
JavaScript
20 lines
581 B
JavaScript
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// Copyright 2021 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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val = "hello";
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function foo(i) {
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return val[i];
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}
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assertEquals(undefined, foo(8));
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Object.prototype[4294967295] = "boom";
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assertEquals("boom", foo(4294967295));
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%PrepareFunctionForOptimization(foo);
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assertEquals(undefined, foo(8));
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assertEquals("boom", foo(4294967295));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(undefined, foo(8));
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assertEquals("boom", foo(4294967295));
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