594315 - Amount of messages downloaded incorrect and extremely high: 4294967295

Status: RESOLVED DUPLICATE of bug 589870

(Thunderbird :: Mail Window Front End, defect)

Description

[Abel Braaksma]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Lightning/1.0b2 Thunderbird/3.1.2

In the bottom-left of the main Thunderbird window, occasionally a weird total amount of messages downloaded appears. When I wrote this, the amount was:

   4294967295 messages downloaded

I'll add a screenshot of this.

After this message appears, the next retrieving of messages is reported correctly (or at least: it looks like it appears correctly, I didn't check the actual count).

Reproducible: Sometimes

Steps to Reproduce:
1. Set the interval to retrieve messages to 1 minute
2. (perhaps) enable Junk filter and/or rules that mark mail as read (these msgs are not counted I believe)
3. Make sure you are member of some (Google) groups that send messages very often
4. Keep an eye on the bottom-left of the window
Actual Results:  
4294967295 messages downloaded

Expected Results:  
No messages to download
or: X messages downloaded

It seems to me that an integer underflow goes unnoticed (but even if so, how could -1 message be downloaded?). Note that the system I use is 64 bit Windows 7 and that Thunderbird runs in WOW64.

Comment 1

[Abel Braaksma]

Attachment: The message showing 4297967295 messages downloaded in bottom-left of main Thunderbird screen