425862 - 100% CPU usage, CSS issue with list-style-position

Status: RESOLVED FIXED

(Core :: Layout, defect)

Description

[Alice0775 White]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; ja; rv:1.8.1.13) Gecko/20080313 Firefox/2.0.0.13 (ayakawa SSE2-PGU)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-us; rv:1.9pre) Gecko/2008032805 Minefield/3.0pre

When I visit http://firefox.geckodev.org/index.php?userChrome.js,
CPU usege is 100%.


Reproducible: Always

Steps to Reproduce:
1.go to http://firefox.geckodev.org/index.php?userChrome.js
2.CPU usege is 100%.
3.
Actual Results:  
CPU 100% forever.

Expected Results:  
After load the page, CPU will settle. 

The above page use following css.
ul,ol{
list-style-position: inside;
margin: 15px;}

If I apply following userContent.css to the page, CPU will settle.
ul,ol{
list-style-position: outside !important;
margin: 15px;}

Comment 1

[Matthias Versen [:Matti]]

I can confirm this  Mozilla/5.0 (Windows; U; Windows NT 6.0; rv:1.9b5pre) Gecko/2008032601 SeaMonkey/2.0a1pre.
The URl takes 50% CPU on my dualcore system

Comment 2

[Alice0775 White]

Regression window is:
2008-02-18-04-trunk --- CPU will settle.
2008-02-19-04-trunk --- 100% CPU usage.

Comment 3

[sevenfurnace]

Attachment: reduced testcase

Maybe the checkin of bug 401291 is concerned?

Comment 4

[Alice0775 White]

As for this problem, the scroll of the page becomes extremely slow not only the rate of use of the CPU becomes 100%. 

This problem is not yet settled.
In addition, there does not seem to be an action for the solution.

This problem did not happen in Firefox2.0. 

I cannot specify the check-in that caused this problem, but think that there is a problem in the review system which was not able to see through this problem.

Comment 5

[Alice0775 White]

I think that this issue was solved by checked in Bug 436453.