My only interaction with the gcc bug base was helping to whittle down oodles of bad codegen cases on new ports. I have no idea what else may be in there.
Many of them are of this kind. As a C++ person, I notice also (with regrets) that a significant portion is of the kind "C++ compiler rejects valid code, or crashes". They are easy to reproduce, so they probably would have caused your former companies to throw away the C++ front-end and rewrite it from scratch. In g++, this won't happen: nobody has the resources to rewrite it from scratch. And even with these bugs, g++ still is much better than the competition :-)
So I'm not sure that it's realistic to keep all bugs on a page.
We were close once. Now the open patches don't even fit on a page.
I think the only time we were close was when the database was new. Regards, Martin