379878 - Querying value of progress bar in downloads dialog reliably crashes Firefox

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Joanmarie Diggs]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a5pre) Gecko/20070506 Minefield/3.0a5pre
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a5pre) Gecko/20070506 Minefield/3.0a5pre

If you use Accerciser to query the value of the progress bar in the downloads dialog, Firefox crashes 100% of the time.

Reproducible: Always

Steps to Reproduce:
1. Launch Accerciser
2. Start a download (I chose the latest nightly build of Firefox)
3. In Accerciser, browse in the hierarchy to locate the progress bar.  With it selected:
4. Choose the API Browser tab.  Near the bottom of the pane, locate the combo box that (likely) says "Accessible" and choose value.
Actual Results:  
Firefox crashes.

Expected Results:  
Firefox wouldn't crash. :-)

Comment 1

[Adam Guthrie]

Do you have a stacktrace for the crash?

Comment 2

[Aaron Leventhal]

Attachment: Return something other that 0 for progress meter, and don't crash if there is no DOM node

Comment 3

[Aaron Leventhal]

That patch is necessary but doesn't fix this bug unfortunately.

In fact when I crash it makes the whole desktop hang for me.

Joanie, does your desktop hang with this crash?

Comment 4

[parente]

No desktop hang here, but I'm on the newest accerciser 0.1.2 from trunk. Hang could be an accerciser bug.

Comment 5

[parente]

Sorry, should have added that I do see the crash. Just not the hang. :)

Comment 6

[Joanmarie Diggs]

Latest Accerciser here as well and I too get the crash but not the hang.  But I don't think it's Accerciser:  Will mentioned that accessing the progress bar via Orca crashed Firefox as well. 

Comment 7

[Aaron Leventhal]

Attachment: Fixes crash and other issues with progress meter support of value interface

Comment 8

[Ginn Chen]

Comment on attachment 264167 [details] [diff] [review]
Fixes crash and other issues with progress meter support of value interface

oops, I felt guilty.