Worked on the espressif/llvm-project repository to enhance test stability and memory management within compiler-rt tests. Addressed a persistent memory leak issue by ensuring pthread_attr objects were properly destroyed after use, which reduced false positives when running tests under LeakSanitizer and AddressSanitizer. This targeted bug fix improved the reliability of continuous integration pipelines by minimizing spurious memory-leak reports, leading to faster and more accurate feedback for LLVM-related development. The work demonstrated a strong command of C++ and POSIX threads, with a focus on robust testing practices and careful attention to resource management in complex, multi-threaded test environments.