154223 - Mozilla crashed while closing the Preferences window [@ nsCOMPtr_base]

Status: VERIFIED DUPLICATE of bug 160656

(Core :: XPCOM, defect)

Description

[Greg K.]

Mozilla crashed after I clicked the close widget on the Preferences window.
Stack forthcoming; seems to suggest XPCOM based on the stack (nsCOMPtr_base).

Comment 1

[Greg K.]

Attachment: Crash report generated by FizzillaCFM/2002062203 showing crash in nsCOMPtr_base

Comment 2

[Greg K.]

I should note that I had unJarred my chrome using PatchMaker and had, yesterday,
made a single small edit to pref-fonts.xul. I'm not saying this contributed to
or caused the crash, as I had used the fonts panel several times since then
without incident.

Comment 3

[Greg K.]

Related to bug 158680?

Comment 4

[Brian Nesse (gone)]

*** Bug 164794 has been marked as a duplicate of this bug. ***

Comment 5

[Brian Nesse (gone)]

The fault here is most likely nsPresContext's. My best guess would be this line
of code (at line 588 in nsPresContext):
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(mContainer));

Doug, if mContainer is null, will do_QueryInterface() do the right thing?

Comment 6

[Greg K.]

Setting All/All per comment 4.

Comment 7

[Doug Turner (:dougt)]

yup.

Comment 8

[timeless]

*** Bug 164973 has been marked as a duplicate of this bug. ***

Comment 9

[Boris Zbarsky [:bzbarsky]]

In this case mContainer is garbage, not null.

*** This bug has been marked as a duplicate of 160656 ***