PGO Related Bugs
On Windows, Mozilla has begun using profile-guided optimization to make execution of the browser faster (i.e., you run your binary and see how it is likely to run, and optimize for those code paths). Currently, there are parts of the Mozilla source code that have bugs or crash when run in PGO builds. This project will mean trying to isolate these bugs by doing PGO builds of these components, creating test cases, debugging, and hopefully fixing things.
Resources: ted, sdwilsh, and others based on component.