261120 - Changing value in paragraph format select hang the application (cpu gets max)

Status: VERIFIED FIXED

(SeaMonkey :: Composer, defect, P1)

Description

[Gérard Talbot]

While trying to change the paragraph format from Body Text to any value, the
application gets into an infinite loop, cpu gets to 100% and application becomes
unresponsive.

Steps to reproduce:
1- Start Composer with a blank document
2- Simply try changing the paragraph format XUL select to any value (besides
Body Text)

Actual results:
Application hangs, becomes unresponsive, cpu %tage close to 100%. I even crashed.

Expected results:
Just change the format

Reproducible: always

This happens in either Normal or HTML Tags editing mode.

Mozilla 1.8a4 build 2004092104 under XP Pro SP2 here.

Comment 1

[Gérard Talbot]

I seem to be unable to send talkback crash data ... because of another bug: bug
210251 

Comment 2

[Gérard Talbot]

If there is some text in the document, then there is no hang and no crash and I
get expected results. I think that to see the bug, you must have a blank document.

Comment 3

[Daniel Glazman (:glazou) (not active in Mozilla any more)]

Confirming, this is a severe regression, almost certainly caused by a non
specifically editor-related checkin that touched editor like deCOMification.

Composer is totally unusable as it is on the trunk.
I am raising priority and severity, Composer can't even be tested normally.

Comment 4

[Gérard Talbot]

I was able to send talkback crash data 
(Incident ID TB951758H)
while trying Mozilla 1.8a4 build 2004092306.

Adding keywords crash and talkbackid

Comment 5

[Marcia Knous [:marcia]]

I was able to confirm this on the mac as well (Mozilla 1.8a4
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a4)
Gecko/20040923), has to be a blank document. Works fine if there is text in the
document.

Comment 6

[Gérard Talbot]

OS -> All
then

Comment 7

[Mats Palmgren (inactive)]

There's a potential fix in bug 260771

Comment 8

[Mats Palmgren (inactive)]

Fixed by bug 260771

Comment 9

[Stephen Donner [:stephend] Not actively reading bugmail]

Verified FIXED using 2004-10-15-05 on Windows XP Seamonkey trunk.