Compiler Performance and Diagnostics

The degree to which your compiler can handle, you know, real world code is called robustness. It's sort of like the quality of the features that you support. And I am faced with this perpetual problem where it is hard to get people to care about robustness and diagnostics. But one thing that I've been thinking about would be just take a corpus of like that of diagnostic that may be questionable or maybe it's just like to include good diagnostics too. That could help me learn more about how to improve my compilers.