101943 - javascript strict errors in consoleBindings.xml - browser hangs 99% CPU

Status: VERIFIED DUPLICATE of bug 85831

(SeaMonkey :: UI Design, defect, P2)

Description

[Jerome Lacoste]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.4+)
Gecko/20010923
BuildID:    2001092308

I was surging and on ChatZilla, and my browser started to hang (99% CPU)
I had the following message.

I've found something for the current 99% CPU problem. My Javascript console is
filled up with messages like: "Error: this.console.appendItem is not a function
 Source file: chrome://global/content/consoleBindings.xml#console-box.init() Line 5"

in around 2 seconds the scrollbar is minimized (as the text area is filled up
very quickly)!

I had to kill the browser (Ouch).

The only line I found a reference to that function in that file is in line 59.
observe : function(aObject) { this.console.appendItem(aObject); }

Not tried to reproduce.

Comment 1

[Jerome Lacoste]

Several changes
- Changing Component from 'Javascript Engine' to XPApp (as seen in bug 72455)
- Changing title from "Javascript hangs - 99% CPU" to "javascript strict errors
in - consoleBindings.xml - browser hangs 99% CPU"
- making critical (as I had to kill and lost both browser, ChatZilla)
- Putting platform and OS to all.

Comment 2

[Phil Schwartau]

Setting default owner and QA - 

Comment 3

[Jerome Lacoste]

I'm the reporter and I have a question that is unrelated to that bug in 
particular, but related to bugs like this one.
I end up often with Mozilla taking 99% CPU. Usually I do not report them 
because I do not find their origin and can't reproduce them.
Are there any methods for retrieving some information about the actual state of 
the program so that I can report a bug with some information? 
The problem is that I am on W2k and don't know a lot the commands... Perhaps 
using some of Visual C++ Tools?
Should I use Talkback and generate a report?
Are there any help on the Mozilla Web site saying how to help you investigate 
those bugs?

Comment 4

[sairuh (rarely reading bugmail)]

actually, talkback only generates a report when the app crashes, not when it
hangs. :(

Comment 5

[Paul Chen]

Marking p2, major, and mozilla0.9.7.

Comment 6

[Henrik Gemal]

*** This bug has been marked as a duplicate of 85831 ***

Comment 7

[sairuh (rarely reading bugmail)]

mass verification of duplicate bugs: to find all bugspam pertaining to this, set
your search string to "DuplicateBugsBelongInZahadum".

if you think this particular bug is *not* a duplicate, please provide a
compelling reason, as well as check a recent *trunk* build (on the appropriate
platform[s]), before reopening.