361811 - Exception repeatedly thrown on http://www.wbeta.com

Status: RESOLVED WORKSFORME

(Tech Evangelism Graveyard :: English US, defect)

Description

[Steve England [:stevee]]

1. New profile, start firefox
2. Load www.wbeta.com
3. Click on a link on the left hand side, under 'XML News Aggrigator'
4. Exception is repeatedly thrown in a dialog:

[Exception... "Component returned failure code: 0x804b000f
[nsIXMLHttpRequest.setRequestHeader]" nsresult: "0x804b000f (<unknown>)"
location: "JS frame :: http://www.wbeta.com/index.js :: sendReq :: line 232"
data: no]

No exception thrown:
Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060504
Minefield/3.0a1 ID:2006050405 [cairo]

Exceptions thrown:
Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060505
Minefield/3.0a1 ID:2006050511 [cairo]

http://bonsai.mozilla.org/cvsquery.cgi?treeid=default&module=PhoenixTinderbox&branch=HEAD&branchtype=match&dir=&file=&filetype=match&who=&whotype=match&sortby=Date&hours=2&date=explicit&mindate=2006-05-04+04&maxdate=2006-05-05+12&cvsroot=%2Fcvsroot

Trunk builds after 2006-05-10 crash @ nsXMLHttpRequest::StreamReaderFunc with the same reproduction steps. See bug 361773.

Comment 1

[Martijn Wargers (dead)]

Attachment: testcase

I guess before the patch for bug 198595 the event argument wasn't passed on to the function, but after the patch for bug 198595 , it does.
On http://www.wbeta.com, it causes the xmlhttrequest to fire again, which sets req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8'); again on an existing xmlhttprequest object, which throws the exception.

Comment 2

[Martijn Wargers (dead)]

So this seems like a tech evangelism issue to me.

Comment 3

[Mats Palmgren (inactive)]

I came to the same conclusion in bug 361773 comment 13  (I also think
it's Evangelism).  The designer of this site were just unlucky to depend
on a Firefox bug that got fixed.

Comment 4

[Boris Zbarsky [:bzbarsky]]

Yeah, I'd say evang.  The plan for the W3C XMLHttpRequest spec is to eventually require an event arg here, as I understand.

Comment 5

[Martijn Wargers (dead)]

I just sent a mail to [e-mail] regarding this.

Comment 6

[Hallvord R. M. Steen [:hallvors]]

404
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0