244989 - html code which can freeze mozilla 1.6

Status: RESOLVED WORKSFORME

(Core :: DOM: HTML Parser, defect)

Description

[Michael Prager]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.6) Gecko/20040528
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.6) Gecko/20040528

when visiting http://www.boardmod.org/stuff/mozilla_16_hard_crash.html with
Mozilla 1.6 (win and linux versions tested) the browser will freeze. I've
stripped the html code down to pin the problematic code down but it looks like
this problem is caused by multiple tags. Check out the minimal code to freeze
Mozilla here:

http://www.boardmod.org/stuff/mozilla_16_crash.html

Note that with the stripped code, the browser is not frozen completely. All the
menus and buttons won't work anymore but you can still click links on the
currently loaded webpage. I know that the html code does not use 100% valid html
but still, with this code it's possible to freeze the browser which may result
in data lost for the user. The problem does not occure using Mozilla 1.5.

Reproducible: Always
Steps to Reproduce:
1. open http://www.boardmod.org/stuff/mozilla_16_crash.html
 with mozilla 1.6
2.
3.

Actual Results:  
browser freezes

Expected Results:  
browser should display the page

Comment 1

[R.K.Aa.]

WFM Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a2) Gecko/20040526

Comment 2

[Michael Prager]

The problem does not affect Mozilla 1.5 or 1.7, it only freezes Mozilla 1.6!

Comment 3

[Boris Zbarsky [:bzbarsky]]

So in other words this has been fixed since 1.6?

Marking worksforme, since it does.  1.6 is not a long-lived branch, so
maintenance releases for it are not going to happen (especially since 1.7 is
about to ship).

Comment 4

[Michael Prager]

Oh ok I thought that 1.6 was long-lived branch. Never mind.

Comment 5

[Boris Zbarsky [:bzbarsky]]

Ah, ok.  Yeah, the only long-lived branches to date are 1.0, 1.4, and 1.7.