Worked on the antmicro/verilator repository to address a critical portability issue affecting Windows and MinGW environments. Focused on C++ development, the work involved enhancing cross-platform compatibility by ensuring the std::replace function was available in the V3Os.cpp code path. This was achieved by including the <algorithm> header, which resolved build and runtime failures specific to Windows systems. The targeted bug fix improved overall build stability and reduced platform-specific support overhead, benefiting both users and continuous integration workflows. No new features were introduced during this period, with efforts concentrated on maintaining concise, low-risk changes that facilitate future maintenance and reliability.