// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-%typedarray%.prototype.slice description: Throws a TypeError if buffer of object created by custom constructor is detached. info: | %TypedArray%.prototype.slice ( start, end ) Let A be ? TypedArraySpeciesCreate(O, « count »). TypedArraySpeciesCreate ( exemplar, argumentList ) Let result be ? TypedArrayCreate(constructor, argumentList). TypedArrayCreate ( constructor, argumentList ) Let newTypedArray be ? Construct(constructor, argumentList). Perform ? ValidateTypedArray(newTypedArray). ValidateTypedArray ( O ) The abstract operation ValidateTypedArray takes argument O. It performs the following steps when called: Perform ? RequireInternalSlot(O, [[TypedArrayName]]). Assert: O has a [[ViewedArrayBuffer]] internal slot. Let buffer be O.[[ViewedArrayBuffer]]. If IsDetachedBuffer(buffer) is true, throw a TypeError exception. ... includes: [testTypedArray.js, detachArrayBuffer.js] features: [align-detached-buffer-semantics-with-web-reality, Symbol.species, TypedArray] ---*/ testWithTypedArrayConstructors(function(TA) { let counter = 0; let sample = new TA(1); sample.constructor = {}; sample.constructor[Symbol.species] = function(count) { let other = new TA(count); counter++; $DETACHBUFFER(other.buffer); return other; }; assert.throws(TypeError, function() { counter++; sample.slice(); }, '`sample.slice()` throws TypeError'); assert.sameValue(counter, 2, 'The value of `counter` is 2'); }); reportCompare(0, 0);