360871 - XMLHttpRequest callbacks can fire while a modal dialog is open

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Boris Zbarsky [:bzbarsky]]

See bug 52209 comment 16.

Comment 1

[Johnny Stenback (:jst)]

On second thought, we won't be blocking on this bug. And Jonas says it's hard :)

Comment 3

[:Gijs (he/him)]

Olli, do you know if this is fixable at all, and what the current situation is wrt e.g. fetch, Promise microtasks and other things that are async - maybe in the intervening 17 years this has gotten easier than Jonas thought back in 2007? :-)

Comment 4

[Olli Pettay [:smaug][[e-mail]]]

This isn't any easier now than it was then.

fetch + streams might work reasonable well since they are more promise based and promises get automatically postponed if the relevant content process, or rather the relevant window is triggering a modal dialog.

Hmm, maybe XHR could wrap various event dispatching somehow to microtasks... except that it would break sync calls.