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deps/v8/test/mjsunit/es6/array-iterator-detached.js
48 строк
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Michaël Zasso
deps: update V8 to 14.6.202.33
24 апр 2026, 19:01
Не верифицирован
24 апр 2026, 19:01
f1e0b83
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// Copyright 2017 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --allow-natives-syntax function Baseline() { let array = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); let it = array[Symbol.iterator](); assertEquals(0, it.next().value); assertEquals(1, it.next().value); assertEquals(2, it.next().value); %ArrayBufferDetach(array.buffer); it.next(); }; %NeverOptimizeFunction(Baseline); assertThrows(Baseline, TypeError, "Cannot perform Array Iterator.prototype.next on a detached or out-of-bounds ArrayBuffer"); function Turbo(count = 10000) { let array = Array(10000); for (let i = 0; i < 10000; ++i) { array[i] = 254; } array[5000] = 255; array = new Uint8Array(array); let sum = 0; let it = array[Symbol.iterator](); for (let i = 0; i < count; ++i) { let result = it.next(); if (result.value === 255) { %ArrayBufferDetach(array.buffer); } sum += result.value; } return sum; } %PrepareFunctionForOptimization(Turbo); Turbo(10); Turbo(10); %OptimizeFunctionOnNextCall(Turbo); assertThrows(Turbo, TypeError, "Cannot perform Array Iterator.prototype.next on a detached or out-of-bounds ArrayBuffer");