Worked on the smallworld-re/smallworld repository to deliver a critical fix for the Unicorn Emulator, focusing on memory access safety and robust error handling. Addressed a crash scenario by implementing guards around instruction data access during memory reads, writes, and instruction fetches, ensuring stability when encountering unmapped, protected, or unaligned memory. Enhanced the emulator’s error handling for non-decoding instructions, improving diagnosability and reducing production incident risk. Utilized Python and applied expertise in emulator development, error handling, and memory management to centralize memory access protections, which streamlined future maintenance and reduced the likelihood of regressions in complex memory operation paths.