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// 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-object
description: >
Throw TypeError from @@toPrimitive returning an Object when setting a property
info: |
22.2.4.4 TypedArray ( object )
This description applies only if the TypedArray function is called with at
least one argument and the Type of the first argument is Object and that
object does not have either a [[TypedArrayName]] or an [[ArrayBufferData]]
internal slot.
...
8. Repeat, while k < len
...
b. Let kValue be ? Get(arrayLike, Pk).
c. Perform ? Set(O, Pk, kValue, true).
...
9.4.5.5 [[Set]] ( P, V, Receiver)
...
2. If Type(P) is String and if SameValue(O, Receiver) is true, then
a. Let numericIndex be ! CanonicalNumericIndexString(P).
b. If numericIndex is not undefined, then
i. Return ? IntegerIndexedElementSet(O, numericIndex, V).
...
9.4.5.9 IntegerIndexedElementSet ( O, index, value )
...
3. Let numValue be ? ToNumber(value).
...
7.1.3 ToNumber ( argument )
Object, Apply the following steps:
1. Let primValue be ? ToPrimitive(argument, hint Number).
2. Return ? ToNumber(primValue).
7.1.1 ToPrimitive ( input [ , PreferredType ] )
...
4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
5. If exoticToPrim is not undefined, then
a. Let result be ? Call(exoticToPrim, input, « hint »).
b. If Type(result) is not Object, return result.
c. Throw a TypeError exception.
...
includes: [testTypedArray.js]
features: [Symbol.toPrimitive, TypedArray]
---*/
testWithTypedArrayConstructors(function(TA) {
var sample = new Int8Array(1);
var toPrimitive = 0;
var valueOf = 0;
sample[Symbol.toPrimitive] = function() {
toPrimitive++;
return {};
};
sample.valueOf = function() {
valueOf++;
};
assert.throws(TypeError, function() {
new TA([8, sample]);
}, "abrupt completion from sample @@toPrimitive");
assert.sameValue(toPrimitive, 1, "toPrimitive was called once");
assert.sameValue(valueOf, 0, "sample.valueOf is not called");
});
|
