918fe04351
PR-URL: https://github.com/nodejs/node/pull/58070 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
// Copyright 2025 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 --js-staging
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// Flags: --experimental-wasm-rab-integration
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'use strict';
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d8.file.execute('test/mjsunit/typedarray-helpers.js');
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const kPageSize = 0x10000;
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function Pad(a, v, start, ctor, pages) {
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for (let i = start; i < (pages * kPageSize) / ctor.BYTES_PER_ELEMENT; ++i) {
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a.push(v);
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}
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}
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function ZeroPad(a, start, ctor, pages) {
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Pad(a, 0, start, ctor, pages);
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}
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(function ArrayFlatParameterConversionGrows() {
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const flatHelper = ArrayFlatHelper;
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for (let ctor of ctors) {
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const rab = CreateResizableArrayBufferViaWasm(1, 2);
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const lengthTracking = new ctor(rab);
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for (let i = 0; i < 4; ++i) {
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WriteToTypedArray(lengthTracking, i, i + 1);
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}
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const evil = { valueOf: () => { rab.resize(2 * kPageSize);
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return 0; }};
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// The original length is used.
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let expectedLengthTrackingFlat = [1, 2, 3, 4];
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ZeroPad(expectedLengthTrackingFlat, 4, ctor, 1);
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assertEquals(expectedLengthTrackingFlat, ToNumbers(flatHelper(lengthTracking, evil)));
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assertEquals(2 * kPageSize, rab.byteLength);
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}
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})();
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(function ArrayFlatParameterConversionDetaches() {
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const flatHelper = ArrayFlatHelper;
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for (let ctor of ctors) {
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const rab = CreateResizableArrayBufferViaWasm(1, 2);
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const fixedLength = new ctor(rab, 0, 4);
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const evil = { valueOf: () => { %ArrayBufferDetachForceWasm(rab);
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return 0; }};
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assertEquals([], flatHelper(fixedLength, evil));
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assertEquals(0, rab.byteLength);
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}
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for (let ctor of ctors) {
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const rab = CreateResizableArrayBufferViaWasm(1, 2);
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const lengthTracking = new ctor(rab);
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for (let i = 0; i < 4; ++i) {
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WriteToTypedArray(lengthTracking, i, i + 1);
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}
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const evil = { valueOf: () => { %ArrayBufferDetachForceWasm(rab);
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return 0; }};
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assertEquals([], ToNumbers(flatHelper(lengthTracking, evil)));
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assertEquals(0, rab.byteLength);
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}
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})();
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