Worked on the macvim-dev/macvim repository, focusing on enhancing reliability and memory safety for the text editor. Addressed a critical heap buffer overflow in the common_function by replacing a static buffer with dynamic memory allocation for function names, ensuring stable handling of long generic names. This change improved crash resistance and overall stability, particularly during complex editing scenarios. Utilized C programming and applied rigorous memory management and software testing practices to validate the fix. Collaborated closely with the open-source community, following established patch review processes and contributing to a robust codebase without introducing new features during the development period.