413546 - JavaScript Error: "l.usernameField is null

Status: VERIFIED DUPLICATE of bug 413314

(Toolkit :: Password Manager, defect)

Description

[Carsten Book [:Tomcat]]

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9b3pre) Gecko/2008012105 Firefox/3.0b3pre

Steps to reproduce:
-> Installed Facebook Toolbar https://addons.mozilla.org/en-US/firefox/addon/3794
and this error happen everytime when i want to login into facebook with this toolbar (click on login to Facebook Button in the upper right) 
-> Choose "not now" when you are asked to save the password (this looks a little like the old password manager dialog)
-> Close the Login Window
- JS error

* Call to xpconnect wrapped JSObject produced this error:  *
[Exception... "'[JavaScript Error: "l.usernameField is null" {file: "file:///debug/mozilla/firefox-debug/dist/FirefoxDebug.app/Contents/MacOS/components/storage-Legacy.js" line: 484}]' when calling method: [nsILoginManagerStorage::addLogin]"  nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)"  location: "JS frame :: file:///debug/mozilla/firefox-debug/dist/FirefoxDebug.app/Contents/MacOS/components/nsLoginManager.js :: anonymous :: line 364"  data: yes]

Comment 1

[:Gavin Sharp [email: [e-mail]]]

I recall doron mentioning a problem like this one on IRC - are the addLogin validity checks to strict?

Comment 2

[Doron Rosenberg (IBM)]

What changed is that when calling nsILoginInfo::init(), aUsernameField and aPasswordField can no longer be set to null, which used to work on trunk.  All docs on MDC state null should work, so this is in theory a regression.  I emailed dolske about this last week as well.