1442226 - Investigate creation of dead objects in E10S mode

Status: RESOLVED WORKSFORME

(DevTools :: Console, enhancement, P2)

Description

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

If we can find a way to create dead objects in E10S mode we should update browser_console_error_source_click.js and enable it in E10S mode.

I have posted the following message on #content and dev-firefox mailing list:

"In non-E10S mode it is easy to create a Dead Object for testing purposes:

    Open the browser console.
    Cu = Components.utils;
    Cu.import('resource://gre/modules/Services.jsm');
    chromeWindow = Services.wm.getMostRecentWindow('navigator:browser');
    doc = chromeWindow.content.document;
    delete chromeWindow;
    Close the Window and doc is a Dead Object.

Is there any way to create a dead object for testing purposes in E10S mode?
Obviously, in E10S mode chromeWindow.content == null"

Comment 1

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

This is where I wish we had an edit button... we should update browser_console_dead_objects.js

Comment 2

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

nchevobbe found a way:

`var s = Cu.Sandbox(null); Cu.nukeSandbox(s); s;`