Worked on KhronosGroup/SPIRV-Tools to address a critical safety issue in the FriendlyNameMapper component, focusing on preventing buffer overflows during instruction parsing. Introduced a centralized guard within the C++ parser to ensure early exit when encountering instructions with zero operands, thereby eliminating scattered per-opcode bounds checks and covering all retry-as-unknown paths. Validated the solution using sanitizer-based tests, including AddressSanitizer and Memcheck, to confirm the absence of heap-buffer-overflow errors. Ensured that friendly names for subsequent valid instructions were preserved and maintained downstream compatibility. The work demonstrated strong skills in C++ development, debugging, and software testing within a complex codebase.