912047 - Firefox's first browser.xul window is not released before shutdown

Status: NEW

(Firefox :: General, defect)

Description

[Florian Quèze [:florian]]

Steps to reproduce:
1. Get a debug build.
2. Start NightlyDebug
3. Press Command+n to open a second window.
4. Close the first window.
5. Wait for a while (for GC/CC to happen) or go to about:memory and press "minimize memory usage".
6. Press Command+q to quit Firefox.

Expected result:
A line in the terminal showing a DOMWINDOW for browser.xul has been destroyed (like "--DOMWINDOW == 12 (0x114ca84b8) [serial = 3] [outer = 0x0] [url = chrome://browser/content/browser.xul]") after step 5, and another similar line after step 6.

Actual result:
Both windows are destroyed at shutdown.

This bug may exist only on Mac (the only platform where I tested this).

I don't know if this is caused by Firefox's front end or by something in the platform, so I didn't really know in which component to file this bug.

Comment 1

[Andrew McCreight [:mccr8]]

sounds similar to bug 850456

Comment 2

[Serge Gautherie (:sgautherie)]

(In reply to Andrew McCreight [:mccr8] from comment #1)
> sounds similar to bug 850456

Agreed :-)
(That bug "detects" the leak with an add-on, whereas this bug uses the console log of a debug build.)
Make them dependent ftb.