Worked on the Z3Prover/z3 repository to enhance build reliability and maintainability by addressing a key issue in the memory management subsystem. Focused on standardizing the internal debug flag, the developer replaced the legacy _DEBUG macro with Z3DEBUG throughout the memory manager header, aligning with project macro conventions and issue tracking requirements. This targeted C++ change reduced cross-platform build inconsistencies and simplified debugging processes. Leveraging skills in build systems and debugging, the work improved codebase consistency and reduced conditional compilation risks, contributing to a more stable and maintainable build environment without introducing new features during the reported period.