Worked on stabilizing the test suite for the erlang/otp repository by addressing compatibility issues with GCC 14. Focused on C programming and build system maintenance, the developer updated the poll() test to include essential system headers such as stdlib.h, unistd.h, and fcntl.h, ensuring proper function of poll and related system calls under the new compiler version. This targeted bug fix reduced test failures in continuous integration, improving overall build reliability. The work demonstrated attention to compiler compatibility and cross-platform test adaptation, contributing to a more robust testing environment for ongoing development in the erlang/otp codebase.