390176 - leak browser domwindow when closing tabs

Status: RESOLVED DUPLICATE of bug 385376

(Firefox :: General, defect)

Description

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

I leak a bunch of dom windows, including the one for the browser chrome, when opening about:config in a new tab and then closing that tab.

Steps to reproduce:
 1. set environment variables as described in mozilla/tools/footprint/leak-gauge.pl
 2. ./firefox about:blank
 3. click in the content area
 4. press Accel-T to open a new tab
 5. type about:config in the URL bar and hit enter
 6. click on the [X] to close the tab containing about:config
 7. click on the [X] to close the browser window
 8. run leak-gauge over the resulting log

Actual results: leaked a bunch of windows
Expected results: no leaks
Observed in: Firefox trunk debug build from this morning

Comment 1

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Actually, step (5) above can be omitted.  We leak the browser window (including the other pages in it at the time it is closed) if tabs have ever been closed in that window.