Google chrome must be one of the most used (in terms of CPU time) C++ software in the world right now. That means it's been fuzz tested (by the developers as well as by the users and also the random websites that gives it garbage html and javascript) extensively. I can only think of the Linux kernel that is more widely used, and Linux is not C++.

Since you seem to be very good at c++, can you point to a "significantly higher quality" c++ projects please? I'd like to see what it looks like.