Worked on stabilizing the macOS test suite for the TileDB-Inc/TileDB repository, focusing on compatibility with Apple Clang 16 and newer. Addressed a build failure affecting the tests target on macOS 15 by resolving an ambiguity between stop_token and std::jthread, and applied the -fexperimental-library compiler flag for Apple Clang 16 or higher. This targeted bug fix improved the reliability of continuous integration runs on macOS, reducing flaky test results and enabling faster development cycles. The work involved C++ development, build system configuration with CMake, and macOS-specific troubleshooting to ensure consistent test suite compilation and execution.