87686 - Downloading headers immediately after unsubscribing from the group causes crash.

Status: VERIFIED DUPLICATE of bug 101023

(SeaMonkey :: MailNews: Message Display, defect)

Description

[Peter Davis]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.1+) Gecko/20010625
BuildID:    2001062508

If you right click on a group with a large number of new messages, the act of
selecting the group (by right clicking) will cause the dialog asking whether you
want to download all headers, a number of hearders, etc., will pop up.  But the
right-click menu will also pop up, allowing you to unsubscribe from the group. 
If you then click "download" in the dialog, the headers will be downloaded into
the now-unsubscribed group, and a crash ensues.

Reproducible: Always
Steps to Reproduce:
1. Subscribe to a large/active newsgroup with more than 300 new headers.
2. Right click on the group.  Both the context menu and the dialog should
appear.  Do not click on anything else yet.
3. Unsubscribe from the group via the context menu.  The group will be removed
from the list, but the download dialog will remain visible and active.
4. Click "download" in the dialog.
5. Merrily fill out a talkback form :)

Actual Results:  Mozilla attempts to download headers into the unsubscribed
group and dies.

Expected Results:  Either a) the download dialog does not appear when you right
click, or b) an error is given saying "You idiot, you can't get headers into an
unsubscribed group! Click ok to cancel or ignore to crash."

This bug is an updated description of 87553.
Talkback report: TB32158448M

Comment 1

[[e-mail] (gone - use [e-mail] instead)]

*** Bug 87687 has been marked as a duplicate of this bug. ***

Comment 2

[[e-mail] (gone - use [e-mail] instead)]

Attachment: TB32158448M

Comment 3

[[e-mail] (gone - use [e-mail] instead)]

Confirming, I see the same behavior with build 2001-06-25-06 on RedHat 7.1

Comment 4

[[e-mail] (gone - use [e-mail] instead)]

adding crash keyword.

Comment 5

[[e-mail] (gone - use [e-mail] instead)]

This didn't affect me on the same setup if I unsubscribe and try to read the
headers from a group which I've already built an .MSF for, so that should give
us a good clue.

Comment 6

[Håkan Waara]

I found this to be very hard to reproduce, because the contextmenu to
unsubscribe often immediately disappeared when I clicked on a group (before the
Download Headers dialog appeared).

Furthermore, when I finally managed to do it - I didn't crash. I just
encountered a bunch of assertions telling me that a msgHdr was null (duh! we
just unsubscribed from the group)...

Summarizing my comment, this crash is minor compared to other crashers we have.
Adjusting severity.

Comment 7

[Peter Davis]

Funny, I can get the menu to stay up nearly everytime, and when I am successful,
it crashes without fail.

Comment 8

[[e-mail] (gone - use [e-mail] instead)]

hwaara, this crashed for me 100%, also, you have to realize the sometimes opt
and debug builds differ (several times debug crashes where opt don't and
vice-versa).  So this really only counts if the opt user sees it, which they do.

Comment 9

[Håkan Waara]

Still can't repro with an opt-build. Guess that means that I can't help, but
maybe someone else can. :)

Comment 10

[[e-mail] (gone - use [e-mail] instead)]

*** Bug 93826 has been marked as a duplicate of this bug. ***

Comment 11

[[e-mail] (gone - use [e-mail] instead)]

*** This bug has been marked as a duplicate of 101023 ***

Comment 12

[[e-mail] (gone - use [e-mail] instead)]

verified dup.