Opera Presto: Uint8ClampedArray.prototype.__proto__

[EyeAndTea]

Any attempts to write to "Uint8ClampedArray.prototype.__ proto __" on opera presto, which includes versions 12.x of the browser, causes an immediate crash. The problem happens in the file

./packages/core-js/internals/array-buffer-view-core.js

on the lines,

if (global[NAME]) setPrototypeOf(global[NAME].prototype, TypedArrayPrototype);

and

setPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);

Due to my lack of familiarity with your code, its philosophy and architecture, I refrain from offering my own fix. An educated guess tells me that this will likely require an explicit detection of presto due to the nature of the bug, which is what I have done for my own copy of the library.

[zloirock]

I'll try to reproduce when I'll have time and access to opera presto.

[EyeAndTea]

Thank you.

A simple,

Uint8ClampedArray.prototype.__proto__ = {};

should be sufficient to cause a crash. A copy of opera presto 12.18 32bit can be found at

https://www.techspot.com/downloads/40-opera-for-windows.html

MD5: "329287dd3d69adbf93e66daa29e79e9e"

Whatever effort you put in this is appreciated.

[zloirock]

Thanks for the issue -)

[EyeAndTea]

Tested with v3.2.0, and things do appear stable on Opera Presto now.

Thank you. Much appreciated.