Worked on the AvaloniaUI/angle repository to enhance code safety and reliability in C++ performance testing workflows. Addressed a bug in the perf_test utility by correcting the size_t formatting, ensuring accurate memory size reporting for 64-bit unsigned integers. Introduced the ANGLE_FORMAT_PRINTF attribute to the StringPrintf function, enabling compile-time format-string validation and reducing the risk of runtime errors. Focused on improving static analysis and memory usage analysis, these changes supported safer string formatting and more dependable performance measurements. Leveraged expertise in C++, compiler attributes, and code safety to deliver targeted improvements that benefit both developers and the broader codebase.