Worked on the microsoft/CsWin32 repository to enhance reliability and memory management within the code generation pipeline. Focused on addressing a critical bug related to GCHandle lifecycle when using ArrayPool, the developer implemented a targeted fix that ensures only initialized GCHandles are freed, reducing the risk of memory safety issues. The solution involved refactoring cleanup logic with a for loop and aligning behavior with ArrayPool best practices. Throughout the process, C# was used extensively, with attention to robust memory management and clear documentation. No new features were shipped, but the work improved maintainability and safety in the generator’s memory handling routines.