Worked on enhancing the stability and correctness of the radareorg/radare2 disassembler by addressing a state corruption risk related to the pdj command. Focused on core development and debugging in C, the work involved restoring the old_offset and core_offset after pdj execution to ensure consistent state management. Updated and reinforced test coverage to reflect the corrected behavior, reducing the risk of cascading errors in disassembly workflows and downstream tooling. The approach emphasized reliability and maintainability, with changes consolidated through clear commit messages and comprehensive tests. Demonstrated skills in reverse engineering and core system debugging while improving the robustness of the codebase.