762790 - setTimeout breaks SpecialPowers.wrap-created (Component-?)wrappers

Status: RESOLVED WONTFIX

(Testing :: Mochitest, defect)

Description

[:Gijs (he/him)]

Attachment: Testcase

(from bug 750638)

It seems that when invoked from a timeout/setinterval, somehow the wrappers aren't quite working correctly (permission denied errors trying to access properties on the wrapped objects).

This testcase probably isn't quite reduced enough, but it's the best I could come up with short-term. Basically, if you apply this and add getComponents to the specialPowersAPI:

getComponents: function() { return this.wrap(Components); },

you'll see the issue on a clean trunk build.

Comment 1

[Bobby Holley (:bholley)]

So, on a trunk build, the reason for the breakage here is that you're trying to overwrite Components, which silently fails (because Components is permanent). If you replace your use of |Components| with |wrappedComponents| or something, it seems to work.

Is that the only issue here, or is there something else?

Comment 2

[Andrew Halberstadt [:ahal]]

Mass closing mochitest bugs that haven't had activity in the past 5 years. Please re-open or file a new bug with modern context if this is still relevant.