Worked on improving test reliability for the swiftlang/swift-corelibs-libdispatch repository by addressing cross-platform compatibility issues in the thread_name test. Focused on enhancing the robustness of the test suite, a cross-platform guard was implemented around the pthread_getname_np function to prevent false negatives on systems where this function is unavailable. This adjustment reduced flaky continuous integration failures and improved the reliability of automated testing. The work involved C and C++ programming, with an emphasis on careful testing practices to ensure consistent behavior across different platforms. No new features were added during this period, but one bug was effectively resolved through this targeted fix.