14225 - Unhandled exception: "you can't dereference a NULL nsCOMPtr"

Status: VERIFIED DUPLICATE of bug 14227

(Core :: XPCOM, defect, P3)

Description

[pnunn]

Scott:
I don't know if this is truly a bug for you, but
you know more than any one else about nsCOMPtr.
So I'm starting with you.

I'm getting an unhandled exception that gives the following message:
 "You can't dereference a NULL nsCOMPtr with operator->()."

The error shows up at line 2379 in file,
mozilla\layout\html\base\src\nsTextFrame.cpp

I'm attaching a file of the call stack at error.

To generate the bug, go to the test page URL.
No magic needed.
I noticed this bug after I fixed another bug that crashed us
before this bug could do its stuff.

Comment 1

[pnunn]

Attachment: callstack from crash

Comment 2

[Eli Goldberg]

<added a best-guess at a title, since this bug had no summary.>

Comment 3

[pnunn]

Scott:
I'm reassigning this one back to me. I have a grip
on it I think.

This is in the code between the imglib and necko.
I can run with it.
-pn

Comment 4

[pnunn]

While the descriptions sound wildly different, I believe this
bug to be a dupe of 14227 and 14181 (reassigned to rpotts. Fix should
be checked in). The unhandled exception, if continued,
results in a crash. This crash is the same as the crash in 14227 and 14181.

*** This bug has been marked as a duplicate of 14227 ***

Comment 5

[Sebastian Späth]

cleaning up: VERIFY duplicate

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/0009971463f8
[fenix] Issue https://github.com/mozilla-mobile/fenix/issues/14225: Remove task when finishing ExternalAppBrowserActivity.