It looks like Mozilla is really trying to catch bugs early on by using Coverity to scan the source code for errors. Mozilla licensed the Coverity tool more than a year ago but they didn’t want to say anything until they were sure that it was doing a good job. I can only see this tool as being a good thing as long as it is used in addition to the normal bug testing.
Hopefully the use of Coverity will lead to a very stable Firefox 2 which is scheduled for release 6-weeks from today. I’m guessing we won’t see Firefox 2 in final form until early October with the recent push back of Beta 2. Beta 2 has now been delayed a total of 2 weeks and is planned for August 23.
News Source: CNet
“I can only see this tool as being a good thing as long as it is used in addition to the normal bug testing.”
This is just one tool, added to their extensive arsenal of bug-killer. They heavily use talkback, crash reports, QA days with automated test cases, bugzilla, etc, etc, etc.