514448 - XPConnect assertion when adding and removing items to and from the toolbar.

Status: RESOLVED WORKSFORME

(Thunderbird :: Toolbars and Tabs, defect)

Description

[Blake Winton (:bwinton) (:☕️)]

From https://bugzilla.mozilla.org/show_bug.cgi?id=465269#c38:
> In the same vein, if you customize the toolbar with the widget and drag it
> back and forth, you will eventually see horrible errors (in a debug build)
> about XPConnect being called on a scope without Components present.  I believe
> what is happening is that we are leaking a listener.  Although the listener
> survives, most of his world gets destroyed, leaving him in a screwed up
> scope.  I'm not sure we actually need to fix this, as it seems hard/annoying
> and unlikely to crop up all that often.  Although we should probably log a
> bug.

The error is:
###!!! ASSERTION: XPConnect is being called on a scope without a 'Components' property!: 'Error', file /Users/bwinton/Programming/thunderbird/folder-location-toolbar/mozilla/js/src/xpconnect/src/xpcwrappednativescope.cpp, line 766

I also get it when adding/removing the "Mail Views" dropdown.
And to replicate it, it helps if I hit the "Done" button after adding or removing the dropdown.

Thanks,
Blake.

Comment 1

[Ryan VanderMeulen [:RyanVM]]

This assertion is gone.