TypedArray's [[DefineOwnProperty]] is incorrect with partial descriptors

Hi everyone,

there is an inconsistency when we try to seal a TypedArray object.

version: 235121
OS: Ubuntu 16.04 x64

Steps to reproduce
let ta = new Int32Array(10);
Object.seal(ta);

Actual results:
TypeError: Attempting to store non-enumerable or non-writable property on a typed array at index: 0

Expected results:
pass without failures


V8, Chakra and SpiderMonkey works as expected.


cinfuzz

[Ross Kirsling]

Might be the same cause as this failure:
https://test262.report/browse/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/conversion-operation.js

[Alexey Shvayka]

Created attachment 395342 [details]
Patch

[Ross Kirsling]

(In reply to Ross Kirsling from comment #1)
> Might be the same cause as this failure:
> https://test262.report/browse/built-ins/TypedArrayConstructors/internals/
> DefineOwnProperty/conversion-operation.js

Oh, heh, I didn't notice the date of the original comment... 🤦‍♂️

[Ross Kirsling]

Comment on attachment 395342 [details]
Patch

r=me pending EWS

[EWS]

Committed r259444: <https://trac.webkit.org/changeset/259444>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 395342 [details].

[Radar WebKit Bug Importer]

<rdar://problem/61245087>